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v8/test/cctest/test-debug.cc
ulan 0959983c1a [heap, debugger] Introduce out-of-memory listener for debugger. 
This API will allow DevTools to intercept out-of-memory condition,
increase the heap limit and schedule heap snapshot.

BUG=chromium:675911

Review-Url: https://codereview.chromium.org/2621873003
Cr-Commit-Position: refs/heads/master@{#42225}
2017-01-11 13:20:53 +00:00

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// Copyright 2012 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following
// disclaimer in the documentation and/or other materials provided
// with the distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include <stdlib.h>
#include "src/v8.h"
#include "src/api.h"
#include "src/compilation-cache.h"
#include "src/debug/debug-interface.h"
#include "src/debug/debug.h"
#include "src/deoptimizer.h"
#include "src/frames.h"
#include "src/utils.h"
#include "test/cctest/cctest.h"
using ::v8::internal::EmbeddedVector;
using ::v8::internal::Object;
using ::v8::internal::Handle;
using ::v8::internal::Heap;
using ::v8::internal::JSGlobalProxy;
using ::v8::internal::Code;
using ::v8::internal::Debug;
using ::v8::internal::StackFrame;
using ::v8::internal::StepAction;
using ::v8::internal::StepIn; // From StepAction enum
using ::v8::internal::StepNext; // From StepAction enum
using ::v8::internal::StepOut; // From StepAction enum
using ::v8::internal::Vector;
using ::v8::internal::StrLength;
// Size of temp buffer for formatting small strings.
#define SMALL_STRING_BUFFER_SIZE 80
// --- H e l p e r C l a s s e s
// Helper class for creating a V8 enviromnent for running tests
class DebugLocalContext {
public:
inline DebugLocalContext(
v8::Isolate* isolate, v8::ExtensionConfiguration* extensions = 0,
v8::Local<v8::ObjectTemplate> global_template =
v8::Local<v8::ObjectTemplate>(),
v8::Local<v8::Value> global_object = v8::Local<v8::Value>())
: scope_(isolate),
context_(v8::Context::New(isolate, extensions, global_template,
global_object)) {
context_->Enter();
}
inline DebugLocalContext(
v8::ExtensionConfiguration* extensions = 0,
v8::Local<v8::ObjectTemplate> global_template =
v8::Local<v8::ObjectTemplate>(),
v8::Local<v8::Value> global_object = v8::Local<v8::Value>())
: scope_(CcTest::isolate()),
context_(v8::Context::New(CcTest::isolate(), extensions,
global_template, global_object)) {
context_->Enter();
}
inline ~DebugLocalContext() {
context_->Exit();
}
inline v8::Local<v8::Context> context() { return context_; }
inline v8::Context* operator->() { return *context_; }
inline v8::Context* operator*() { return *context_; }
inline v8::Isolate* GetIsolate() { return context_->GetIsolate(); }
inline bool IsReady() { return !context_.IsEmpty(); }
void ExposeDebug() {
v8::internal::Isolate* isolate =
reinterpret_cast<v8::internal::Isolate*>(context_->GetIsolate());
v8::internal::Factory* factory = isolate->factory();
// Expose the debug context global object in the global object for testing.
CHECK(isolate->debug()->Load());
Handle<v8::internal::Context> debug_context =
isolate->debug()->debug_context();
debug_context->set_security_token(
v8::Utils::OpenHandle(*context_)->security_token());
Handle<JSGlobalProxy> global(Handle<JSGlobalProxy>::cast(
v8::Utils::OpenHandle(*context_->Global())));
Handle<v8::internal::String> debug_string =
factory->InternalizeOneByteString(STATIC_CHAR_VECTOR("debug"));
v8::internal::JSObject::SetOwnPropertyIgnoreAttributes(
global, debug_string, handle(debug_context->global_proxy()),
v8::internal::DONT_ENUM)
.Check();
}
private:
v8::HandleScope scope_;
v8::Local<v8::Context> context_;
};
// --- H e l p e r F u n c t i o n s
// Compile and run the supplied source and return the requested function.
static v8::Local<v8::Function> CompileFunction(v8::Isolate* isolate,
const char* source,
const char* function_name) {
CompileRunChecked(isolate, source);
v8::Local<v8::String> name = v8_str(isolate, function_name);
v8::Local<v8::Context> context = isolate->GetCurrentContext();
v8::MaybeLocal<v8::Value> maybe_function =
context->Global()->Get(context, name);
return v8::Local<v8::Function>::Cast(maybe_function.ToLocalChecked());
}
// Compile and run the supplied source and return the requested function.
static v8::Local<v8::Function> CompileFunction(DebugLocalContext* env,
const char* source,
const char* function_name) {
return CompileFunction(env->GetIsolate(), source, function_name);
}
// Is there any debug info for the function?
static bool HasDebugInfo(v8::Local<v8::Function> fun) {
Handle<v8::internal::JSFunction> f =
Handle<v8::internal::JSFunction>::cast(v8::Utils::OpenHandle(*fun));
Handle<v8::internal::SharedFunctionInfo> shared(f->shared());
return shared->HasDebugInfo();
}
// Set a break point in a function with a position relative to function start,
// and return the associated break point number.
static int SetBreakPoint(v8::Local<v8::Function> fun, int position) {
i::Handle<i::JSFunction> function =
i::Handle<i::JSFunction>::cast(v8::Utils::OpenHandle(*fun));
position += function->shared()->start_position();
static int break_point = 0;
v8::internal::Isolate* isolate = function->GetIsolate();
v8::internal::Debug* debug = isolate->debug();
debug->SetBreakPoint(
function,
Handle<Object>(v8::internal::Smi::FromInt(++break_point), isolate),
&position);
return break_point;
}
// Set a break point in a function using the Debug object and return the
// associated break point number.
static int SetBreakPointFromJS(v8::Isolate* isolate,
const char* function_name,
int line, int position) {
EmbeddedVector<char, SMALL_STRING_BUFFER_SIZE> buffer;
SNPrintF(buffer,
"debug.Debug.setBreakPoint(%s,%d,%d)",
function_name, line, position);
buffer[SMALL_STRING_BUFFER_SIZE - 1] = '\0';
v8::Local<v8::Value> value = CompileRunChecked(isolate, buffer.start());
return value->Int32Value(isolate->GetCurrentContext()).FromJust();
}
// Set a break point in a script identified by id using the global Debug object.
static int SetScriptBreakPointByIdFromJS(v8::Isolate* isolate, int script_id,
int line, int column) {
EmbeddedVector<char, SMALL_STRING_BUFFER_SIZE> buffer;
if (column >= 0) {
// Column specified set script break point on precise location.
SNPrintF(buffer,
"debug.Debug.setScriptBreakPointById(%d,%d,%d)",
script_id, line, column);
} else {
// Column not specified set script break point on line.
SNPrintF(buffer,
"debug.Debug.setScriptBreakPointById(%d,%d)",
script_id, line);
}
buffer[SMALL_STRING_BUFFER_SIZE - 1] = '\0';
{
v8::TryCatch try_catch(isolate);
v8::Local<v8::Value> value = CompileRunChecked(isolate, buffer.start());
CHECK(!try_catch.HasCaught());
return value->Int32Value(isolate->GetCurrentContext()).FromJust();
}
}
// Set a break point in a script identified by name using the global Debug
// object.
static int SetScriptBreakPointByNameFromJS(v8::Isolate* isolate,
const char* script_name, int line,
int column) {
EmbeddedVector<char, SMALL_STRING_BUFFER_SIZE> buffer;
if (column >= 0) {
// Column specified set script break point on precise location.
SNPrintF(buffer,
"debug.Debug.setScriptBreakPointByName(\"%s\",%d,%d)",
script_name, line, column);
} else {
// Column not specified set script break point on line.
SNPrintF(buffer,
"debug.Debug.setScriptBreakPointByName(\"%s\",%d)",
script_name, line);
}
buffer[SMALL_STRING_BUFFER_SIZE - 1] = '\0';
{
v8::TryCatch try_catch(isolate);
v8::Local<v8::Value> value = CompileRunChecked(isolate, buffer.start());
CHECK(!try_catch.HasCaught());
return value->Int32Value(isolate->GetCurrentContext()).FromJust();
}
}
// Clear a break point.
static void ClearBreakPoint(int break_point) {
v8::internal::Isolate* isolate = CcTest::i_isolate();
v8::internal::Debug* debug = isolate->debug();
debug->ClearBreakPoint(
Handle<Object>(v8::internal::Smi::FromInt(break_point), isolate));
}
// Clear a break point using the global Debug object.
static void ClearBreakPointFromJS(v8::Isolate* isolate,
int break_point_number) {
EmbeddedVector<char, SMALL_STRING_BUFFER_SIZE> buffer;
SNPrintF(buffer,
"debug.Debug.clearBreakPoint(%d)",
break_point_number);
buffer[SMALL_STRING_BUFFER_SIZE - 1] = '\0';
CompileRunChecked(isolate, buffer.start());
}
static void EnableScriptBreakPointFromJS(v8::Isolate* isolate,
int break_point_number) {
EmbeddedVector<char, SMALL_STRING_BUFFER_SIZE> buffer;
SNPrintF(buffer,
"debug.Debug.enableScriptBreakPoint(%d)",
break_point_number);
buffer[SMALL_STRING_BUFFER_SIZE - 1] = '\0';
CompileRunChecked(isolate, buffer.start());
}
static void DisableScriptBreakPointFromJS(v8::Isolate* isolate,
int break_point_number) {
EmbeddedVector<char, SMALL_STRING_BUFFER_SIZE> buffer;
SNPrintF(buffer,
"debug.Debug.disableScriptBreakPoint(%d)",
break_point_number);
buffer[SMALL_STRING_BUFFER_SIZE - 1] = '\0';
CompileRunChecked(isolate, buffer.start());
}
static void ChangeScriptBreakPointConditionFromJS(v8::Isolate* isolate,
int break_point_number,
const char* condition) {
EmbeddedVector<char, SMALL_STRING_BUFFER_SIZE> buffer;
SNPrintF(buffer,
"debug.Debug.changeScriptBreakPointCondition(%d, \"%s\")",
break_point_number, condition);
buffer[SMALL_STRING_BUFFER_SIZE - 1] = '\0';
CompileRunChecked(isolate, buffer.start());
}
// Change break on exception.
static void ChangeBreakOnException(bool caught, bool uncaught) {
v8::internal::Debug* debug = CcTest::i_isolate()->debug();
debug->ChangeBreakOnException(v8::internal::BreakException, caught);
debug->ChangeBreakOnException(v8::internal::BreakUncaughtException, uncaught);
}
// Change break on exception using the global Debug object.
static void ChangeBreakOnExceptionFromJS(v8::Isolate* isolate, bool caught,
bool uncaught) {
if (caught) {
CompileRunChecked(isolate, "debug.Debug.setBreakOnException()");
} else {
CompileRunChecked(isolate, "debug.Debug.clearBreakOnException()");
}
if (uncaught) {
CompileRunChecked(isolate, "debug.Debug.setBreakOnUncaughtException()");
} else {
CompileRunChecked(isolate, "debug.Debug.clearBreakOnUncaughtException()");
}
}
// Change break on exception using the native API call.
static void ChangeBreakOnExceptionFromAPI(
v8::Isolate* isolate, v8::debug::ExceptionBreakState state) {
v8::debug::ChangeBreakOnException(isolate, state);
}
// Prepare to step to next break location.
static void PrepareStep(StepAction step_action) {
v8::internal::Debug* debug = CcTest::i_isolate()->debug();
debug->PrepareStep(step_action);
}
static void ClearStepping() { CcTest::i_isolate()->debug()->ClearStepping(); }
// This function is in namespace v8::internal to be friend with class
// v8::internal::Debug.
namespace v8 {
namespace internal {
// Collect the currently debugged functions.
Handle<FixedArray> GetDebuggedFunctions() {
Debug* debug = CcTest::i_isolate()->debug();
v8::internal::DebugInfoListNode* node = debug->debug_info_list_;
// Find the number of debugged functions.
int count = 0;
while (node) {
count++;
node = node->next();
}
// Allocate array for the debugged functions
Handle<FixedArray> debugged_functions =
CcTest::i_isolate()->factory()->NewFixedArray(count);
// Run through the debug info objects and collect all functions.
count = 0;
while (node) {
debugged_functions->set(count++, *node->debug_info());
node = node->next();
}
return debugged_functions;
}
// Check that the debugger has been fully unloaded.
void CheckDebuggerUnloaded(bool check_functions) {
// Check that the debugger context is cleared and that there is no debug
// information stored for the debugger.
CHECK(CcTest::i_isolate()->debug()->debug_context().is_null());
CHECK(!CcTest::i_isolate()->debug()->debug_info_list_);
// Collect garbage to ensure weak handles are cleared.
CcTest::CollectAllGarbage(i::Heap::kFinalizeIncrementalMarkingMask);
CcTest::CollectAllGarbage(Heap::kMakeHeapIterableMask);
// Iterate the head and check that there are no debugger related objects left.
HeapIterator iterator(CcTest::heap());
for (HeapObject* obj = iterator.next(); obj != NULL; obj = iterator.next()) {
CHECK(!obj->IsDebugInfo());
CHECK(!obj->IsBreakPointInfo());
// If deep check of functions is requested check that no debug break code
// is left in all functions.
if (check_functions) {
if (obj->IsJSFunction()) {
JSFunction* fun = JSFunction::cast(obj);
for (RelocIterator it(fun->shared()->code(),
RelocInfo::kDebugBreakSlotMask);
!it.done(); it.next()) {
CHECK(!it.rinfo()->IsPatchedDebugBreakSlotSequence());
}
}
}
}
}
} // namespace internal
} // namespace v8
// Check that the debugger has been fully unloaded.
static void CheckDebuggerUnloaded(v8::Isolate* isolate,
bool check_functions = false) {
v8::internal::CheckDebuggerUnloaded(check_functions);
}
// --- D e b u g E v e n t H a n d l e r s
// ---
// --- The different tests uses a number of debug event handlers.
// ---
// Source for the JavaScript function which picks out the function
// name of a frame.
const char* frame_function_name_source =
"function frame_function_name(exec_state, frame_number) {"
" return exec_state.frame(frame_number).func().name();"
"}";
v8::Local<v8::Function> frame_function_name;
// Source for the JavaScript function which pick out the name of the
// first argument of a frame.
const char* frame_argument_name_source =
"function frame_argument_name(exec_state, frame_number) {"
" return exec_state.frame(frame_number).argumentName(0);"
"}";
v8::Local<v8::Function> frame_argument_name;
// Source for the JavaScript function which pick out the value of the
// first argument of a frame.
const char* frame_argument_value_source =
"function frame_argument_value(exec_state, frame_number) {"
" return exec_state.frame(frame_number).argumentValue(0).value_;"
"}";
v8::Local<v8::Function> frame_argument_value;
// Source for the JavaScript function which pick out the name of the
// first argument of a frame.
const char* frame_local_name_source =
"function frame_local_name(exec_state, frame_number) {"
" return exec_state.frame(frame_number).localName(0);"
"}";
v8::Local<v8::Function> frame_local_name;
// Source for the JavaScript function which pick out the value of the
// first argument of a frame.
const char* frame_local_value_source =
"function frame_local_value(exec_state, frame_number) {"
" return exec_state.frame(frame_number).localValue(0).value_;"
"}";
v8::Local<v8::Function> frame_local_value;
// Source for the JavaScript function which picks out the source line for the
// top frame.
const char* frame_source_line_source =
"function frame_source_line(exec_state) {"
" return exec_state.frame(0).sourceLine();"
"}";
v8::Local<v8::Function> frame_source_line;
// Source for the JavaScript function which picks out the source column for the
// top frame.
const char* frame_source_column_source =
"function frame_source_column(exec_state) {"
" return exec_state.frame(0).sourceColumn();"
"}";
v8::Local<v8::Function> frame_source_column;
// Source for the JavaScript function which picks out the script name for the
// top frame.
const char* frame_script_name_source =
"function frame_script_name(exec_state) {"
" return exec_state.frame(0).func().script().name();"
"}";
v8::Local<v8::Function> frame_script_name;
// Source for the JavaScript function which returns the number of frames.
static const char* frame_count_source =
"function frame_count(exec_state) {"
" return exec_state.frameCount();"
"}";
v8::Local<v8::Function> frame_count;
// Global variable to store the last function hit - used by some tests.
char last_function_hit[80];
// Global variable to store the name for last script hit - used by some tests.
char last_script_name_hit[80];
// Global variables to store the last source position - used by some tests.
int last_source_line = -1;
int last_source_column = -1;
// Debug event handler which counts the break points which have been hit.
int break_point_hit_count = 0;
int break_point_hit_count_deoptimize = 0;
static void DebugEventBreakPointHitCount(
const v8::Debug::EventDetails& event_details) {
v8::DebugEvent event = event_details.GetEvent();
v8::Local<v8::Object> exec_state = event_details.GetExecutionState();
v8::Local<v8::Context> context = CcTest::isolate()->GetCurrentContext();
v8::internal::Isolate* isolate = CcTest::i_isolate();
Debug* debug = isolate->debug();
// When hitting a debug event listener there must be a break set.
CHECK_NE(debug->break_id(), 0);
// Count the number of breaks.
if (event == v8::Break) {
break_point_hit_count++;
if (!frame_function_name.IsEmpty()) {
// Get the name of the function.
const int argc = 2;
v8::Local<v8::Value> argv[argc] = {
exec_state, v8::Integer::New(CcTest::isolate(), 0)};
v8::Local<v8::Value> result =
frame_function_name->Call(context, exec_state, argc, argv)
.ToLocalChecked();
if (result->IsUndefined()) {
last_function_hit[0] = '\0';
} else {
CHECK(result->IsString());
v8::Local<v8::String> function_name(result.As<v8::String>());
function_name->WriteUtf8(last_function_hit);
}
}
if (!frame_source_line.IsEmpty()) {
// Get the source line.
const int argc = 1;
v8::Local<v8::Value> argv[argc] = {exec_state};
v8::Local<v8::Value> result =
frame_source_line->Call(context, exec_state, argc, argv)
.ToLocalChecked();
CHECK(result->IsNumber());
last_source_line = result->Int32Value(context).FromJust();
}
if (!frame_source_column.IsEmpty()) {
// Get the source column.
const int argc = 1;
v8::Local<v8::Value> argv[argc] = {exec_state};
v8::Local<v8::Value> result =
frame_source_column->Call(context, exec_state, argc, argv)
.ToLocalChecked();
CHECK(result->IsNumber());
last_source_column = result->Int32Value(context).FromJust();
}
if (!frame_script_name.IsEmpty()) {
// Get the script name of the function script.
const int argc = 1;
v8::Local<v8::Value> argv[argc] = {exec_state};
v8::Local<v8::Value> result =
frame_script_name->Call(context, exec_state, argc, argv)
.ToLocalChecked();
if (result->IsUndefined()) {
last_script_name_hit[0] = '\0';
} else {
CHECK(result->IsString());
v8::Local<v8::String> script_name(result.As<v8::String>());
script_name->WriteUtf8(last_script_name_hit);
}
}
// Perform a full deoptimization when the specified number of
// breaks have been hit.
if (break_point_hit_count == break_point_hit_count_deoptimize) {
i::Deoptimizer::DeoptimizeAll(isolate);
}
}
}
// Debug event handler which counts a number of events and collects the stack
// height if there is a function compiled for that.
int exception_hit_count = 0;
int uncaught_exception_hit_count = 0;
int last_js_stack_height = -1;
v8::Local<v8::Function> debug_event_listener_callback;
int debug_event_listener_callback_result;
static void DebugEventCounterClear() {
break_point_hit_count = 0;
exception_hit_count = 0;
uncaught_exception_hit_count = 0;
}
static void DebugEventCounter(
const v8::Debug::EventDetails& event_details) {
v8::DebugEvent event = event_details.GetEvent();
v8::Local<v8::Object> exec_state = event_details.GetExecutionState();
v8::Local<v8::Object> event_data = event_details.GetEventData();
v8::Local<v8::Context> context = CcTest::isolate()->GetCurrentContext();
v8::internal::Debug* debug = CcTest::i_isolate()->debug();
// When hitting a debug event listener there must be a break set.
CHECK_NE(debug->break_id(), 0);
// Count the number of breaks.
if (event == v8::Break) {
break_point_hit_count++;
} else if (event == v8::Exception) {
exception_hit_count++;
// Check whether the exception was uncaught.
v8::Local<v8::String> fun_name = v8_str(CcTest::isolate(), "uncaught");
v8::Local<v8::Function> fun = v8::Local<v8::Function>::Cast(
event_data->Get(context, fun_name).ToLocalChecked());
v8::Local<v8::Value> result =
fun->Call(context, event_data, 0, NULL).ToLocalChecked();
if (result->IsTrue()) {
uncaught_exception_hit_count++;
}
}
// Collect the JavsScript stack height if the function frame_count is
// compiled.
if (!frame_count.IsEmpty()) {
static const int kArgc = 1;
v8::Local<v8::Value> argv[kArgc] = {exec_state};
// Using exec_state as receiver is just to have a receiver.
v8::Local<v8::Value> result =
frame_count->Call(context, exec_state, kArgc, argv).ToLocalChecked();
last_js_stack_height = result->Int32Value(context).FromJust();
}
// Run callback from DebugEventListener and check the result.
if (!debug_event_listener_callback.IsEmpty()) {
v8::Local<v8::Value> result =
debug_event_listener_callback->Call(context, event_data, 0, NULL)
.ToLocalChecked();
CHECK(!result.IsEmpty());
CHECK_EQ(debug_event_listener_callback_result,
result->Int32Value(context).FromJust());
}
}
// Debug event handler which evaluates a number of expressions when a break
// point is hit. Each evaluated expression is compared with an expected value.
// For this debug event handler to work the following two global varaibles
// must be initialized.
// checks: An array of expressions and expected results
// evaluate_check_function: A JavaScript function (see below)
// Structure for holding checks to do.
struct EvaluateCheck {
const char* expr; // An expression to evaluate when a break point is hit.
v8::Local<v8::Value> expected; // The expected result.
};
// Array of checks to do.
struct EvaluateCheck* checks = NULL;
// Source for The JavaScript function which can do the evaluation when a break
// point is hit.
const char* evaluate_check_source =
"function evaluate_check(exec_state, expr, expected) {"
" return exec_state.frame(0).evaluate(expr).value() === expected;"
"}";
v8::Local<v8::Function> evaluate_check_function;
// The actual debug event described by the longer comment above.
static void DebugEventEvaluate(
const v8::Debug::EventDetails& event_details) {
v8::DebugEvent event = event_details.GetEvent();
v8::Local<v8::Object> exec_state = event_details.GetExecutionState();
v8::Isolate* isolate = CcTest::isolate();
v8::Local<v8::Context> context = isolate->GetCurrentContext();
v8::internal::Debug* debug = CcTest::i_isolate()->debug();
// When hitting a debug event listener there must be a break set.
CHECK_NE(debug->break_id(), 0);
if (event == v8::Break) {
break_point_hit_count++;
for (int i = 0; checks[i].expr != NULL; i++) {
const int argc = 3;
v8::Local<v8::String> string = v8_str(isolate, checks[i].expr);
v8::Local<v8::Value> argv[argc] = {exec_state, string,
checks[i].expected};
v8::Local<v8::Value> result =
evaluate_check_function->Call(context, exec_state, argc, argv)
.ToLocalChecked();
if (!result->IsTrue()) {
v8::String::Utf8Value utf8(checks[i].expected);
V8_Fatal(__FILE__, __LINE__, "%s != %s", checks[i].expr, *utf8);
}
}
}
}
// This debug event listener removes a breakpoint in a function
int debug_event_remove_break_point = 0;
static void DebugEventRemoveBreakPoint(
const v8::Debug::EventDetails& event_details) {
v8::DebugEvent event = event_details.GetEvent();
v8::Local<v8::Value> data = event_details.GetCallbackData();
v8::internal::Debug* debug = CcTest::i_isolate()->debug();
// When hitting a debug event listener there must be a break set.
CHECK_NE(debug->break_id(), 0);
if (event == v8::Break) {
break_point_hit_count++;
CHECK(data->IsFunction());
ClearBreakPoint(debug_event_remove_break_point);
}
}
// Debug event handler which counts break points hit and performs a step
// afterwards.
StepAction step_action = StepIn; // Step action to perform when stepping.
static void DebugEventStep(
const v8::Debug::EventDetails& event_details) {
v8::DebugEvent event = event_details.GetEvent();
v8::internal::Debug* debug = CcTest::i_isolate()->debug();
// When hitting a debug event listener there must be a break set.
CHECK_NE(debug->break_id(), 0);
if (event == v8::Break) {
break_point_hit_count++;
PrepareStep(step_action);
}
}
// Debug event handler which counts break points hit and performs a step
// afterwards. For each call the expected function is checked.
// For this debug event handler to work the following two global varaibles
// must be initialized.
// expected_step_sequence: An array of the expected function call sequence.
// frame_function_name: A JavaScript function (see below).
// String containing the expected function call sequence. Note: this only works
// if functions have name length of one.
const char* expected_step_sequence = NULL;
// The actual debug event described by the longer comment above.
static void DebugEventStepSequence(
const v8::Debug::EventDetails& event_details) {
v8::DebugEvent event = event_details.GetEvent();
v8::Local<v8::Object> exec_state = event_details.GetExecutionState();
v8::internal::Debug* debug = CcTest::i_isolate()->debug();
// When hitting a debug event listener there must be a break set.
CHECK_NE(debug->break_id(), 0);
if (event == v8::Break || event == v8::Exception) {
// Check that the current function is the expected.
CHECK(break_point_hit_count <
StrLength(expected_step_sequence));
const int argc = 2;
v8::Local<v8::Value> argv[argc] = {exec_state,
v8::Integer::New(CcTest::isolate(), 0)};
v8::Local<v8::Context> context = CcTest::isolate()->GetCurrentContext();
v8::Local<v8::Value> result =
frame_function_name->Call(context, exec_state, argc, argv)
.ToLocalChecked();
CHECK(result->IsString());
v8::String::Utf8Value function_name(
result->ToString(context).ToLocalChecked());
CHECK_EQ(1, StrLength(*function_name));
CHECK_EQ((*function_name)[0],
expected_step_sequence[break_point_hit_count]);
// Perform step.
break_point_hit_count++;
PrepareStep(step_action);
}
}
// Debug event handler which performs a garbage collection.
static void DebugEventBreakPointCollectGarbage(
const v8::Debug::EventDetails& event_details) {
v8::DebugEvent event = event_details.GetEvent();
v8::internal::Debug* debug = CcTest::i_isolate()->debug();
// When hitting a debug event listener there must be a break set.
CHECK_NE(debug->break_id(), 0);
// Perform a garbage collection when break point is hit and continue. Based
// on the number of break points hit either scavenge or mark compact
// collector is used.
if (event == v8::Break) {
break_point_hit_count++;
if (break_point_hit_count % 2 == 0) {
// Scavenge.
CcTest::CollectGarbage(v8::internal::NEW_SPACE);
} else {
// Mark sweep compact.
CcTest::CollectAllGarbage(i::Heap::kFinalizeIncrementalMarkingMask);
}
}
}
// Debug event handler which re-issues a debug break and calls the garbage
// collector to have the heap verified.
static void DebugEventBreak(
const v8::Debug::EventDetails& event_details) {
v8::DebugEvent event = event_details.GetEvent();
v8::internal::Debug* debug = CcTest::i_isolate()->debug();
// When hitting a debug event listener there must be a break set.
CHECK_NE(debug->break_id(), 0);
if (event == v8::Break) {
// Count the number of breaks.
break_point_hit_count++;
// Run the garbage collector to enforce heap verification if option
// --verify-heap is set.
CcTest::CollectGarbage(v8::internal::NEW_SPACE);
// Set the break flag again to come back here as soon as possible.
v8::Debug::DebugBreak(CcTest::isolate());
}
}
// Debug event handler which re-issues a debug break until a limit has been
// reached.
int max_break_point_hit_count = 0;
bool terminate_after_max_break_point_hit = false;
static void DebugEventBreakMax(
const v8::Debug::EventDetails& event_details) {
v8::DebugEvent event = event_details.GetEvent();
v8::Isolate* v8_isolate = CcTest::isolate();
v8::internal::Isolate* isolate = CcTest::i_isolate();
v8::internal::Debug* debug = isolate->debug();
// When hitting a debug event listener there must be a break set.
CHECK_NE(debug->break_id(), 0);
if (event == v8::Break) {
if (break_point_hit_count < max_break_point_hit_count) {
// Count the number of breaks.
break_point_hit_count++;
// Set the break flag again to come back here as soon as possible.
v8::Debug::DebugBreak(v8_isolate);
} else if (terminate_after_max_break_point_hit) {
// Terminate execution after the last break if requested.
v8_isolate->TerminateExecution();
}
// Perform a full deoptimization when the specified number of
// breaks have been hit.
if (break_point_hit_count == break_point_hit_count_deoptimize) {
i::Deoptimizer::DeoptimizeAll(isolate);
}
}
}
// --- M e s s a g e C a l l b a c k
// Message callback which counts the number of messages.
int message_callback_count = 0;
static void MessageCallbackCountClear() {
message_callback_count = 0;
}
static void MessageCallbackCount(v8::Local<v8::Message> message,
v8::Local<v8::Value> data) {
message_callback_count++;
}
// --- T h e A c t u a l T e s t s
// Test that the debug info in the VM is in sync with the functions being
// debugged.
TEST(DebugInfo) {
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
// Create a couple of functions for the test.
v8::Local<v8::Function> foo =
CompileFunction(&env, "function foo(){}", "foo");
v8::Local<v8::Function> bar =
CompileFunction(&env, "function bar(){}", "bar");
// Initially no functions are debugged.
CHECK_EQ(0, v8::internal::GetDebuggedFunctions()->length());
CHECK(!HasDebugInfo(foo));
CHECK(!HasDebugInfo(bar));
EnableDebugger(env->GetIsolate());
// One function (foo) is debugged.
int bp1 = SetBreakPoint(foo, 0);
CHECK_EQ(1, v8::internal::GetDebuggedFunctions()->length());
CHECK(HasDebugInfo(foo));
CHECK(!HasDebugInfo(bar));
// Two functions are debugged.
int bp2 = SetBreakPoint(bar, 0);
CHECK_EQ(2, v8::internal::GetDebuggedFunctions()->length());
CHECK(HasDebugInfo(foo));
CHECK(HasDebugInfo(bar));
// One function (bar) is debugged.
ClearBreakPoint(bp1);
CHECK_EQ(1, v8::internal::GetDebuggedFunctions()->length());
CHECK(!HasDebugInfo(foo));
CHECK(HasDebugInfo(bar));
// No functions are debugged.
ClearBreakPoint(bp2);
DisableDebugger(env->GetIsolate());
CHECK_EQ(0, v8::internal::GetDebuggedFunctions()->length());
CHECK(!HasDebugInfo(foo));
CHECK(!HasDebugInfo(bar));
}
// Test that a break point can be set at an IC store location.
TEST(BreakPointICStore) {
break_point_hit_count = 0;
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
v8::Debug::SetDebugEventListener(env->GetIsolate(),
DebugEventBreakPointHitCount);
v8::Local<v8::Function> foo =
CompileFunction(&env, "function foo(){bar=0;}", "foo");
// Run without breakpoints.
foo->Call(env.context(), env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(0, break_point_hit_count);
// Run with breakpoint
int bp = SetBreakPoint(foo, 0);
foo->Call(env.context(), env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(1, break_point_hit_count);
foo->Call(env.context(), env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(2, break_point_hit_count);
// Run without breakpoints.
ClearBreakPoint(bp);
foo->Call(env.context(), env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(2, break_point_hit_count);
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
CheckDebuggerUnloaded(env->GetIsolate());
}
// Test that a break point can be set at an IC load location.
TEST(BreakPointICLoad) {
break_point_hit_count = 0;
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
v8::Debug::SetDebugEventListener(env->GetIsolate(),
DebugEventBreakPointHitCount);
CompileRunChecked(env->GetIsolate(), "bar=1");
v8::Local<v8::Function> foo =
CompileFunction(&env, "function foo(){var x=bar;}", "foo");
// Run without breakpoints.
foo->Call(env.context(), env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(0, break_point_hit_count);
// Run with breakpoint.
int bp = SetBreakPoint(foo, 0);
foo->Call(env.context(), env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(1, break_point_hit_count);
foo->Call(env.context(), env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(2, break_point_hit_count);
// Run without breakpoints.
ClearBreakPoint(bp);
foo->Call(env.context(), env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(2, break_point_hit_count);
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
CheckDebuggerUnloaded(env->GetIsolate());
}
// Test that a break point can be set at an IC call location.
TEST(BreakPointICCall) {
break_point_hit_count = 0;
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
v8::Debug::SetDebugEventListener(env->GetIsolate(),
DebugEventBreakPointHitCount);
CompileRunChecked(env->GetIsolate(), "function bar(){}");
v8::Local<v8::Function> foo =
CompileFunction(&env, "function foo(){bar();}", "foo");
// Run without breakpoints.
foo->Call(env.context(), env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(0, break_point_hit_count);
// Run with breakpoint
int bp = SetBreakPoint(foo, 0);
foo->Call(env.context(), env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(1, break_point_hit_count);
foo->Call(env.context(), env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(2, break_point_hit_count);
// Run without breakpoints.
ClearBreakPoint(bp);
foo->Call(env.context(), env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(2, break_point_hit_count);
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
CheckDebuggerUnloaded(env->GetIsolate());
}
// Test that a break point can be set at an IC call location and survive a GC.
TEST(BreakPointICCallWithGC) {
break_point_hit_count = 0;
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
v8::Debug::SetDebugEventListener(env->GetIsolate(),
DebugEventBreakPointCollectGarbage);
CompileRunChecked(env->GetIsolate(), "function bar(){return 1;}");
v8::Local<v8::Function> foo =
CompileFunction(&env, "function foo(){return bar();}", "foo");
v8::Local<v8::Context> context = env.context();
// Run without breakpoints.
CHECK_EQ(1, foo->Call(context, env->Global(), 0, NULL)
.ToLocalChecked()
->Int32Value(context)
.FromJust());
CHECK_EQ(0, break_point_hit_count);
// Run with breakpoint.
int bp = SetBreakPoint(foo, 0);
CHECK_EQ(1, foo->Call(context, env->Global(), 0, NULL)
.ToLocalChecked()
->Int32Value(context)
.FromJust());
CHECK_EQ(1, break_point_hit_count);
CHECK_EQ(1, foo->Call(context, env->Global(), 0, NULL)
.ToLocalChecked()
->Int32Value(context)
.FromJust());
CHECK_EQ(2, break_point_hit_count);
// Run without breakpoints.
ClearBreakPoint(bp);
foo->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(2, break_point_hit_count);
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
CheckDebuggerUnloaded(env->GetIsolate());
}
// Test that a break point can be set at an IC call location and survive a GC.
TEST(BreakPointConstructCallWithGC) {
break_point_hit_count = 0;
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
v8::Debug::SetDebugEventListener(env->GetIsolate(),
DebugEventBreakPointCollectGarbage);
CompileRunChecked(env->GetIsolate(), "function bar(){ this.x = 1;}");
v8::Local<v8::Function> foo =
CompileFunction(&env, "function foo(){return new bar(1).x;}", "foo");
v8::Local<v8::Context> context = env.context();
// Run without breakpoints.
CHECK_EQ(1, foo->Call(context, env->Global(), 0, NULL)
.ToLocalChecked()
->Int32Value(context)
.FromJust());
CHECK_EQ(0, break_point_hit_count);
// Run with breakpoint.
int bp = SetBreakPoint(foo, 0);
CHECK_EQ(1, foo->Call(context, env->Global(), 0, NULL)
.ToLocalChecked()
->Int32Value(context)
.FromJust());
CHECK_EQ(1, break_point_hit_count);
CHECK_EQ(1, foo->Call(context, env->Global(), 0, NULL)
.ToLocalChecked()
->Int32Value(context)
.FromJust());
CHECK_EQ(2, break_point_hit_count);
// Run without breakpoints.
ClearBreakPoint(bp);
foo->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(2, break_point_hit_count);
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
CheckDebuggerUnloaded(env->GetIsolate());
}
// Test that a break point can be set at a return store location.
TEST(BreakPointReturn) {
break_point_hit_count = 0;
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
// Create a functions for checking the source line and column when hitting
// a break point.
frame_source_line = CompileFunction(&env,
frame_source_line_source,
"frame_source_line");
frame_source_column = CompileFunction(&env,
frame_source_column_source,
"frame_source_column");
v8::Debug::SetDebugEventListener(env->GetIsolate(),
DebugEventBreakPointHitCount);
v8::Local<v8::Function> foo =
CompileFunction(&env, "function foo(){}", "foo");
v8::Local<v8::Context> context = env.context();
// Run without breakpoints.
foo->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(0, break_point_hit_count);
// Run with breakpoint
int bp = SetBreakPoint(foo, 0);
foo->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(1, break_point_hit_count);
CHECK_EQ(0, last_source_line);
CHECK_EQ(15, last_source_column);
foo->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(2, break_point_hit_count);
CHECK_EQ(0, last_source_line);
CHECK_EQ(15, last_source_column);
// Run without breakpoints.
ClearBreakPoint(bp);
foo->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(2, break_point_hit_count);
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
CheckDebuggerUnloaded(env->GetIsolate());
}
static void CallWithBreakPoints(v8::Local<v8::Context> context,
v8::Local<v8::Object> recv,
v8::Local<v8::Function> f,
int break_point_count, int call_count) {
break_point_hit_count = 0;
for (int i = 0; i < call_count; i++) {
f->Call(context, recv, 0, NULL).ToLocalChecked();
CHECK_EQ((i + 1) * break_point_count, break_point_hit_count);
}
}
// Test GC during break point processing.
TEST(GCDuringBreakPointProcessing) {
break_point_hit_count = 0;
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
v8::Local<v8::Context> context = env.context();
v8::Debug::SetDebugEventListener(env->GetIsolate(),
DebugEventBreakPointCollectGarbage);
v8::Local<v8::Function> foo;
// Test IC store break point with garbage collection.
foo = CompileFunction(&env, "function foo(){bar=0;}", "foo");
SetBreakPoint(foo, 0);
CallWithBreakPoints(context, env->Global(), foo, 1, 10);
// Test IC load break point with garbage collection.
foo = CompileFunction(&env, "bar=1;function foo(){var x=bar;}", "foo");
SetBreakPoint(foo, 0);
CallWithBreakPoints(context, env->Global(), foo, 1, 10);
// Test IC call break point with garbage collection.
foo = CompileFunction(&env, "function bar(){};function foo(){bar();}", "foo");
SetBreakPoint(foo, 0);
CallWithBreakPoints(context, env->Global(), foo, 1, 10);
// Test return break point with garbage collection.
foo = CompileFunction(&env, "function foo(){}", "foo");
SetBreakPoint(foo, 0);
CallWithBreakPoints(context, env->Global(), foo, 1, 25);
// Test debug break slot break point with garbage collection.
foo = CompileFunction(&env, "function foo(){var a;}", "foo");
SetBreakPoint(foo, 0);
CallWithBreakPoints(context, env->Global(), foo, 1, 25);
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
CheckDebuggerUnloaded(env->GetIsolate());
}
// Call the function three times with different garbage collections in between
// and make sure that the break point survives.
static void CallAndGC(v8::Local<v8::Context> context,
v8::Local<v8::Object> recv, v8::Local<v8::Function> f) {
break_point_hit_count = 0;
for (int i = 0; i < 3; i++) {
// Call function.
f->Call(context, recv, 0, NULL).ToLocalChecked();
CHECK_EQ(1 + i * 3, break_point_hit_count);
// Scavenge and call function.
CcTest::CollectGarbage(v8::internal::NEW_SPACE);
f->Call(context, recv, 0, NULL).ToLocalChecked();
CHECK_EQ(2 + i * 3, break_point_hit_count);
// Mark sweep (and perhaps compact) and call function.
CcTest::CollectAllGarbage(i::Heap::kFinalizeIncrementalMarkingMask);
f->Call(context, recv, 0, NULL).ToLocalChecked();
CHECK_EQ(3 + i * 3, break_point_hit_count);
}
}
// Test that a break point can be set at a return store location.
TEST(BreakPointSurviveGC) {
break_point_hit_count = 0;
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
v8::Local<v8::Context> context = env.context();
v8::Debug::SetDebugEventListener(env->GetIsolate(),
DebugEventBreakPointHitCount);
v8::Local<v8::Function> foo;
// Test IC store break point with garbage collection.
{
CompileFunction(&env, "function foo(){}", "foo");
foo = CompileFunction(&env, "function foo(){bar=0;}", "foo");
SetBreakPoint(foo, 0);
}
CallAndGC(context, env->Global(), foo);
// Test IC load break point with garbage collection.
{
CompileFunction(&env, "function foo(){}", "foo");
foo = CompileFunction(&env, "bar=1;function foo(){var x=bar;}", "foo");
SetBreakPoint(foo, 0);
}
CallAndGC(context, env->Global(), foo);
// Test IC call break point with garbage collection.
{
CompileFunction(&env, "function foo(){}", "foo");
foo = CompileFunction(&env,
"function bar(){};function foo(){bar();}",
"foo");
SetBreakPoint(foo, 0);
}
CallAndGC(context, env->Global(), foo);
// Test return break point with garbage collection.
{
CompileFunction(&env, "function foo(){}", "foo");
foo = CompileFunction(&env, "function foo(){}", "foo");
SetBreakPoint(foo, 0);
}
CallAndGC(context, env->Global(), foo);
// Test non IC break point with garbage collection.
{
CompileFunction(&env, "function foo(){}", "foo");
foo = CompileFunction(&env, "function foo(){var bar=0;}", "foo");
SetBreakPoint(foo, 0);
}
CallAndGC(context, env->Global(), foo);
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
CheckDebuggerUnloaded(env->GetIsolate());
}
// Test that break points can be set using the global Debug object.
TEST(BreakPointThroughJavaScript) {
break_point_hit_count = 0;
DebugLocalContext env;
v8::Isolate* isolate = env->GetIsolate();
v8::HandleScope scope(isolate);
v8::Local<v8::Context> context = env.context();
env.ExposeDebug();
v8::Debug::SetDebugEventListener(isolate, DebugEventBreakPointHitCount);
CompileRunChecked(isolate, "function bar(){}");
CompileFunction(isolate, "function foo(){bar();bar();}", "foo");
// 012345678901234567890
// 1 2
// Break points are set at position 3 and 9
v8::Local<v8::String> source = v8_str(env->GetIsolate(), "foo()");
v8::Local<v8::Script> foo =
v8::Script::Compile(context, source).ToLocalChecked();
CHECK_EQ(0, break_point_hit_count);
// Run with one breakpoint
int bp1 = SetBreakPointFromJS(env->GetIsolate(), "foo", 0, 3);
foo->Run(context).ToLocalChecked();
CHECK_EQ(1, break_point_hit_count);
foo->Run(context).ToLocalChecked();
CHECK_EQ(2, break_point_hit_count);
// Run with two breakpoints
int bp2 = SetBreakPointFromJS(env->GetIsolate(), "foo", 0, 9);
foo->Run(context).ToLocalChecked();
CHECK_EQ(4, break_point_hit_count);
foo->Run(context).ToLocalChecked();
CHECK_EQ(6, break_point_hit_count);
// Run with one breakpoint
ClearBreakPointFromJS(env->GetIsolate(), bp2);
foo->Run(context).ToLocalChecked();
CHECK_EQ(7, break_point_hit_count);
foo->Run(context).ToLocalChecked();
CHECK_EQ(8, break_point_hit_count);
// Run without breakpoints.
ClearBreakPointFromJS(env->GetIsolate(), bp1);
foo->Run(context).ToLocalChecked();
CHECK_EQ(8, break_point_hit_count);
v8::Debug::SetDebugEventListener(isolate, nullptr);
CheckDebuggerUnloaded(isolate);
// Make sure that the break point numbers are consecutive.
CHECK_EQ(1, bp1);
CHECK_EQ(2, bp2);
}
// Test that break points on scripts identified by name can be set using the
// global Debug object.
TEST(ScriptBreakPointByNameThroughJavaScript) {
break_point_hit_count = 0;
DebugLocalContext env;
v8::Isolate* isolate = env->GetIsolate();
v8::HandleScope scope(isolate);
v8::Local<v8::Context> context = env.context();
env.ExposeDebug();
v8::Debug::SetDebugEventListener(isolate, DebugEventBreakPointHitCount);
v8::Local<v8::String> script = v8_str(isolate,
"function f() {\n"
" function h() {\n"
" a = 0; // line 2\n"
" }\n"
" b = 1; // line 4\n"
" return h();\n"
"}\n"
"\n"
"function g() {\n"
" function h() {\n"
" a = 0;\n"
" }\n"
" b = 2; // line 12\n"
" h();\n"
" b = 3; // line 14\n"
" f(); // line 15\n"
"}");
// Compile the script and get the two functions.
v8::ScriptOrigin origin = v8::ScriptOrigin(v8_str(isolate, "test"));
v8::Script::Compile(context, script, &origin)
.ToLocalChecked()
->Run(context)
.ToLocalChecked();
v8::Local<v8::Function> f = v8::Local<v8::Function>::Cast(
env->Global()->Get(context, v8_str(isolate, "f")).ToLocalChecked());
v8::Local<v8::Function> g = v8::Local<v8::Function>::Cast(
env->Global()->Get(context, v8_str(isolate, "g")).ToLocalChecked());
// Call f and g without break points.
break_point_hit_count = 0;
f->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(0, break_point_hit_count);
g->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(0, break_point_hit_count);
// Call f and g with break point on line 12.
int sbp1 = SetScriptBreakPointByNameFromJS(isolate, "test", 12, 0);
break_point_hit_count = 0;
f->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(0, break_point_hit_count);
g->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(1, break_point_hit_count);
// Remove the break point again.
break_point_hit_count = 0;
ClearBreakPointFromJS(env->GetIsolate(), sbp1);
f->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(0, break_point_hit_count);
g->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(0, break_point_hit_count);
// Call f and g with break point on line 2.
int sbp2 = SetScriptBreakPointByNameFromJS(env->GetIsolate(), "test", 2, 0);
break_point_hit_count = 0;
f->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(1, break_point_hit_count);
g->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(2, break_point_hit_count);
// Call f and g with break point on line 2, 4, 12, 14 and 15.
int sbp3 = SetScriptBreakPointByNameFromJS(isolate, "test", 4, 0);
int sbp4 = SetScriptBreakPointByNameFromJS(isolate, "test", 12, 0);
int sbp5 = SetScriptBreakPointByNameFromJS(isolate, "test", 14, 0);
int sbp6 = SetScriptBreakPointByNameFromJS(isolate, "test", 15, 0);
break_point_hit_count = 0;
f->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(2, break_point_hit_count);
g->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(7, break_point_hit_count);
// Remove all the break points again.
break_point_hit_count = 0;
ClearBreakPointFromJS(isolate, sbp2);
ClearBreakPointFromJS(isolate, sbp3);
ClearBreakPointFromJS(isolate, sbp4);
ClearBreakPointFromJS(isolate, sbp5);
ClearBreakPointFromJS(isolate, sbp6);
f->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(0, break_point_hit_count);
g->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(0, break_point_hit_count);
v8::Debug::SetDebugEventListener(isolate, nullptr);
CheckDebuggerUnloaded(isolate);
// Make sure that the break point numbers are consecutive.
CHECK_EQ(1, sbp1);
CHECK_EQ(2, sbp2);
CHECK_EQ(3, sbp3);
CHECK_EQ(4, sbp4);
CHECK_EQ(5, sbp5);
CHECK_EQ(6, sbp6);
}
TEST(ScriptBreakPointByIdThroughJavaScript) {
break_point_hit_count = 0;
DebugLocalContext env;
v8::Isolate* isolate = env->GetIsolate();
v8::HandleScope scope(isolate);
v8::Local<v8::Context> context = env.context();
env.ExposeDebug();
v8::Debug::SetDebugEventListener(isolate, DebugEventBreakPointHitCount);
v8::Local<v8::String> source = v8_str(isolate,
"function f() {\n"
" function h() {\n"
" a = 0; // line 2\n"
" }\n"
" b = 1; // line 4\n"
" return h();\n"
"}\n"
"\n"
"function g() {\n"
" function h() {\n"
" a = 0;\n"
" }\n"
" b = 2; // line 12\n"
" h();\n"
" b = 3; // line 14\n"
" f(); // line 15\n"
"}");
// Compile the script and get the two functions.
v8::ScriptOrigin origin = v8::ScriptOrigin(v8_str(isolate, "test"));
v8::Local<v8::Script> script =
v8::Script::Compile(context, source, &origin).ToLocalChecked();
script->Run(context).ToLocalChecked();
v8::Local<v8::Function> f = v8::Local<v8::Function>::Cast(
env->Global()->Get(context, v8_str(isolate, "f")).ToLocalChecked());
v8::Local<v8::Function> g = v8::Local<v8::Function>::Cast(
env->Global()->Get(context, v8_str(isolate, "g")).ToLocalChecked());
// Get the script id knowing that internally it is a 32 integer.
int script_id = script->GetUnboundScript()->GetId();
// Call f and g without break points.
break_point_hit_count = 0;
f->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(0, break_point_hit_count);
g->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(0, break_point_hit_count);
// Call f and g with break point on line 12.
int sbp1 = SetScriptBreakPointByIdFromJS(env->GetIsolate(), script_id, 12, 0);
break_point_hit_count = 0;
f->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(0, break_point_hit_count);
g->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(1, break_point_hit_count);
// Remove the break point again.
break_point_hit_count = 0;
ClearBreakPointFromJS(env->GetIsolate(), sbp1);
f->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(0, break_point_hit_count);
g->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(0, break_point_hit_count);
// Call f and g with break point on line 2.
int sbp2 = SetScriptBreakPointByIdFromJS(env->GetIsolate(), script_id, 2, 0);
break_point_hit_count = 0;
f->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(1, break_point_hit_count);
g->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(2, break_point_hit_count);
// Call f and g with break point on line 2, 4, 12, 14 and 15.
int sbp3 = SetScriptBreakPointByIdFromJS(env->GetIsolate(), script_id, 4, 0);
int sbp4 = SetScriptBreakPointByIdFromJS(env->GetIsolate(), script_id, 12, 0);
int sbp5 = SetScriptBreakPointByIdFromJS(env->GetIsolate(), script_id, 14, 0);
int sbp6 = SetScriptBreakPointByIdFromJS(env->GetIsolate(), script_id, 15, 0);
break_point_hit_count = 0;
f->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(2, break_point_hit_count);
g->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(7, break_point_hit_count);
// Remove all the break points again.
break_point_hit_count = 0;
ClearBreakPointFromJS(env->GetIsolate(), sbp2);
ClearBreakPointFromJS(env->GetIsolate(), sbp3);
ClearBreakPointFromJS(env->GetIsolate(), sbp4);
ClearBreakPointFromJS(env->GetIsolate(), sbp5);
ClearBreakPointFromJS(env->GetIsolate(), sbp6);
f->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(0, break_point_hit_count);
g->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(0, break_point_hit_count);
v8::Debug::SetDebugEventListener(isolate, nullptr);
CheckDebuggerUnloaded(isolate);
// Make sure that the break point numbers are consecutive.
CHECK_EQ(1, sbp1);
CHECK_EQ(2, sbp2);
CHECK_EQ(3, sbp3);
CHECK_EQ(4, sbp4);
CHECK_EQ(5, sbp5);
CHECK_EQ(6, sbp6);
}
// Test conditional script break points.
TEST(EnableDisableScriptBreakPoint) {
break_point_hit_count = 0;
DebugLocalContext env;
v8::Isolate* isolate = env->GetIsolate();
v8::HandleScope scope(isolate);
v8::Local<v8::Context> context = env.context();
env.ExposeDebug();
v8::Debug::SetDebugEventListener(isolate, DebugEventBreakPointHitCount);
v8::Local<v8::String> script = v8_str(isolate,
"function f() {\n"
" a = 0; // line 1\n"
"};");
// Compile the script and get function f.
v8::ScriptOrigin origin = v8::ScriptOrigin(v8_str(isolate, "test"));
v8::Script::Compile(context, script, &origin)
.ToLocalChecked()
->Run(context)
.ToLocalChecked();
v8::Local<v8::Function> f = v8::Local<v8::Function>::Cast(
env->Global()->Get(context, v8_str(isolate, "f")).ToLocalChecked());
// Set script break point on line 1 (in function f).
int sbp = SetScriptBreakPointByNameFromJS(isolate, "test", 1, 0);
// Call f while enabeling and disabling the script break point.
break_point_hit_count = 0;
f->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(1, break_point_hit_count);
DisableScriptBreakPointFromJS(isolate, sbp);
f->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(1, break_point_hit_count);
EnableScriptBreakPointFromJS(isolate, sbp);
f->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(2, break_point_hit_count);
DisableScriptBreakPointFromJS(isolate, sbp);
f->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(2, break_point_hit_count);
v8::Debug::SetDebugEventListener(isolate, nullptr);
CheckDebuggerUnloaded(isolate);
}
// Test conditional script break points.
TEST(ConditionalScriptBreakPoint) {
break_point_hit_count = 0;
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
env.ExposeDebug();
v8::Debug::SetDebugEventListener(env->GetIsolate(),
DebugEventBreakPointHitCount);
v8::Local<v8::String> script = v8_str(env->GetIsolate(),
"count = 0;\n"
"function f() {\n"
" g(count++); // line 2\n"
"};\n"
"function g(x) {\n"
" var a=x; // line 5\n"
"};");
// Compile the script and get function f.
v8::Local<v8::Context> context = env.context();
v8::ScriptOrigin origin = v8::ScriptOrigin(v8_str(env->GetIsolate(), "test"));
v8::Script::Compile(context, script, &origin)
.ToLocalChecked()
->Run(context)
.ToLocalChecked();
v8::Local<v8::Function> f = v8::Local<v8::Function>::Cast(
env->Global()
->Get(context, v8_str(env->GetIsolate(), "f"))
.ToLocalChecked());
// Set script break point on line 5 (in function g).
int sbp1 = SetScriptBreakPointByNameFromJS(env->GetIsolate(), "test", 5, 0);
// Call f with different conditions on the script break point.
break_point_hit_count = 0;
ChangeScriptBreakPointConditionFromJS(env->GetIsolate(), sbp1, "false");
f->Call(env.context(), env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(0, break_point_hit_count);
ChangeScriptBreakPointConditionFromJS(env->GetIsolate(), sbp1, "true");
break_point_hit_count = 0;
f->Call(env.context(), env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(1, break_point_hit_count);
ChangeScriptBreakPointConditionFromJS(env->GetIsolate(), sbp1, "x % 2 == 0");
break_point_hit_count = 0;
for (int i = 0; i < 10; i++) {
f->Call(env.context(), env->Global(), 0, NULL).ToLocalChecked();
}
CHECK_EQ(5, break_point_hit_count);
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
CheckDebuggerUnloaded(env->GetIsolate());
}
// Test when several scripts has the same script data
TEST(ScriptBreakPointMultiple) {
break_point_hit_count = 0;
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
env.ExposeDebug();
v8::Debug::SetDebugEventListener(env->GetIsolate(),
DebugEventBreakPointHitCount);
v8::Local<v8::Context> context = env.context();
v8::Local<v8::Function> f;
v8::Local<v8::String> script_f = v8_str(env->GetIsolate(),
"function f() {\n"
" a = 0; // line 1\n"
"}");
v8::Local<v8::Function> g;
v8::Local<v8::String> script_g = v8_str(env->GetIsolate(),
"function g() {\n"
" b = 0; // line 1\n"
"}");
v8::ScriptOrigin origin = v8::ScriptOrigin(v8_str(env->GetIsolate(), "test"));
// Compile the scripts with same script data and get the functions.
v8::Script::Compile(context, script_f, &origin)
.ToLocalChecked()
->Run(context)
.ToLocalChecked();
f = v8::Local<v8::Function>::Cast(
env->Global()
->Get(context, v8_str(env->GetIsolate(), "f"))
.ToLocalChecked());
v8::Script::Compile(context, script_g, &origin)
.ToLocalChecked()
->Run(context)
.ToLocalChecked();
g = v8::Local<v8::Function>::Cast(
env->Global()
->Get(context, v8_str(env->GetIsolate(), "g"))
.ToLocalChecked());
int sbp = SetScriptBreakPointByNameFromJS(env->GetIsolate(), "test", 1, 0);
// Call f and g and check that the script break point is active.
break_point_hit_count = 0;
f->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(1, break_point_hit_count);
g->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(2, break_point_hit_count);
// Clear the script break point.
ClearBreakPointFromJS(env->GetIsolate(), sbp);
// Call f and g and check that the script break point is no longer active.
break_point_hit_count = 0;
f->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(0, break_point_hit_count);
g->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(0, break_point_hit_count);
// Set script break point with the scripts loaded.
sbp = SetScriptBreakPointByNameFromJS(env->GetIsolate(), "test", 1, 0);
// Call f and g and check that the script break point is active.
break_point_hit_count = 0;
f->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(1, break_point_hit_count);
g->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(2, break_point_hit_count);
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
CheckDebuggerUnloaded(env->GetIsolate());
}
// Test the script origin which has both name and line offset.
TEST(ScriptBreakPointLineOffset) {
break_point_hit_count = 0;
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
env.ExposeDebug();
v8::Debug::SetDebugEventListener(env->GetIsolate(),
DebugEventBreakPointHitCount);
v8::Local<v8::Context> context = env.context();
v8::Local<v8::Function> f;
v8::Local<v8::String> script =
v8_str(env->GetIsolate(),
"function f() {\n"
" a = 0; // line 8 as this script has line offset 7\n"
" b = 0; // line 9 as this script has line offset 7\n"
"}");
// Create script origin both name and line offset.
v8::ScriptOrigin origin(v8_str(env->GetIsolate(), "test.html"),
v8::Integer::New(env->GetIsolate(), 7));
// Compile the script and get the function.
v8::Script::Compile(context, script, &origin)
.ToLocalChecked()
->Run(context)
.ToLocalChecked();
int sbp1 =
SetScriptBreakPointByNameFromJS(env->GetIsolate(), "test.html", 8, 0);
int sbp2 =
SetScriptBreakPointByNameFromJS(env->GetIsolate(), "test.html", 9, 0);
f = v8::Local<v8::Function>::Cast(
env->Global()
->Get(context, v8_str(env->GetIsolate(), "f"))
.ToLocalChecked());
// Call f and check that the script break point is active.
break_point_hit_count = 0;
f->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(2, break_point_hit_count);
// Clear the script break points.
ClearBreakPointFromJS(env->GetIsolate(), sbp1);
ClearBreakPointFromJS(env->GetIsolate(), sbp2);
// Call f and check that no script break points are active.
break_point_hit_count = 0;
f->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(0, break_point_hit_count);
// Set a script break point with the script loaded.
sbp1 = SetScriptBreakPointByNameFromJS(env->GetIsolate(), "test.html", 9, 0);
// Call f and check that the script break point is active.
break_point_hit_count = 0;
f->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(1, break_point_hit_count);
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
CheckDebuggerUnloaded(env->GetIsolate());
}
// Test script break points set on lines.
TEST(ScriptBreakPointLine) {
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
env.ExposeDebug();
// Create a function for checking the function when hitting a break point.
frame_function_name = CompileFunction(&env,
frame_function_name_source,
"frame_function_name");
v8::Debug::SetDebugEventListener(env->GetIsolate(),
DebugEventBreakPointHitCount);
v8::Local<v8::Context> context = env.context();
v8::Local<v8::Function> f;
v8::Local<v8::Function> g;
v8::Local<v8::String> script =
v8_str(env->GetIsolate(),
"a = 0 // line 0\n"
"function f() {\n"
" a = 1; // line 2\n"
"}\n"
" a = 2; // line 4\n"
" /* xx */ function g() { // line 5\n"
" function h() { // line 6\n"
" a = 3; // line 7\n"
" }\n"
" h(); // line 9\n"
" a = 4; // line 10\n"
" }\n"
" a=5; // line 12");
// Compile the script and get the function.
break_point_hit_count = 0;
v8::ScriptOrigin origin(v8_str(env->GetIsolate(), "test.html"),
v8::Integer::New(env->GetIsolate(), 0));
v8::Local<v8::Script> compiled =
v8::Script::Compile(context, script, &origin).ToLocalChecked();
int sbp1 =
SetScriptBreakPointByNameFromJS(env->GetIsolate(), "test.html", 0, -1);
int sbp2 =
SetScriptBreakPointByNameFromJS(env->GetIsolate(), "test.html", 1, -1);
int sbp3 =
SetScriptBreakPointByNameFromJS(env->GetIsolate(), "test.html", 5, -1);
compiled->Run(context).ToLocalChecked();
f = v8::Local<v8::Function>::Cast(
env->Global()
->Get(context, v8_str(env->GetIsolate(), "f"))
.ToLocalChecked());
g = v8::Local<v8::Function>::Cast(
env->Global()
->Get(context, v8_str(env->GetIsolate(), "g"))
.ToLocalChecked());
// Check that a break point was hit when the script was run.
CHECK_EQ(1, break_point_hit_count);
CHECK_EQ(0, StrLength(last_function_hit));
// Call f and check that the script break point.
f->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(2, break_point_hit_count);
CHECK_EQ(0, strcmp("f", last_function_hit));
// Call g and check that the script break point.
g->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(3, break_point_hit_count);
CHECK_EQ(0, strcmp("g", last_function_hit));
// Clear the script break point on g and set one on h.
ClearBreakPointFromJS(env->GetIsolate(), sbp3);
int sbp4 =
SetScriptBreakPointByNameFromJS(env->GetIsolate(), "test.html", 6, -1);
// Call g and check that the script break point in h is hit.
g->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(4, break_point_hit_count);
CHECK_EQ(0, strcmp("h", last_function_hit));
// Clear break points in f and h. Set a new one in the script between
// functions f and g and test that there is no break points in f and g any
// more.
ClearBreakPointFromJS(env->GetIsolate(), sbp2);
ClearBreakPointFromJS(env->GetIsolate(), sbp4);
int sbp5 =
SetScriptBreakPointByNameFromJS(env->GetIsolate(), "test.html", 4, -1);
break_point_hit_count = 0;
f->Call(context, env->Global(), 0, NULL).ToLocalChecked();
g->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(0, break_point_hit_count);
// Set a break point in the code after the last function decleration.
int sbp6 =
SetScriptBreakPointByNameFromJS(env->GetIsolate(), "test.html", 12, -1);
// Reloading the script should not hit any break points.
break_point_hit_count = 0;
v8::Script::Compile(context, script, &origin)
.ToLocalChecked()
->Run(context)
.ToLocalChecked();
CHECK_EQ(0, break_point_hit_count);
ClearBreakPointFromJS(env->GetIsolate(), sbp1);
ClearBreakPointFromJS(env->GetIsolate(), sbp5);
ClearBreakPointFromJS(env->GetIsolate(), sbp6);
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
CheckDebuggerUnloaded(env->GetIsolate());
}
// Test top level script break points set on lines.
TEST(ScriptBreakPointLineTopLevel) {
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
env.ExposeDebug();
v8::Debug::SetDebugEventListener(env->GetIsolate(),
DebugEventBreakPointHitCount);
v8::Local<v8::Context> context = env.context();
v8::Local<v8::String> script =
v8_str(env->GetIsolate(),
"function f() {\n"
" a = 1; // line 1\n"
"}\n"
"a = 2; // line 3\n");
v8::Local<v8::Function> f;
{
v8::HandleScope scope(env->GetIsolate());
CompileRunWithOrigin(script, "test.html");
}
f = v8::Local<v8::Function>::Cast(
env->Global()
->Get(context, v8_str(env->GetIsolate(), "f"))
.ToLocalChecked());
CcTest::CollectAllGarbage(i::Heap::kFinalizeIncrementalMarkingMask);
SetScriptBreakPointByNameFromJS(env->GetIsolate(), "test.html", 3, -1);
// Call f and check that there was no break points.
break_point_hit_count = 0;
f->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(0, break_point_hit_count);
// Recompile and run script and check that break point was not reapplied.
break_point_hit_count = 0;
CompileRunWithOrigin(script, "test.html");
CHECK_EQ(0, break_point_hit_count);
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
CheckDebuggerUnloaded(env->GetIsolate());
}
// Test that it is possible to add and remove break points in a top level
// function which has no references but has not been collected yet.
TEST(ScriptBreakPointTopLevelCrash) {
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
env.ExposeDebug();
v8::Debug::SetDebugEventListener(env->GetIsolate(),
DebugEventBreakPointHitCount);
CompileRunWithOrigin(
"function f() {\n"
" return 0;\n"
"}\n",
"test.html");
int sbp1 =
SetScriptBreakPointByNameFromJS(env->GetIsolate(), "test.html", 1, -1);
break_point_hit_count = 0;
CompileRun("f();");
CHECK_EQ(1, break_point_hit_count);
int sbp2 =
SetScriptBreakPointByNameFromJS(env->GetIsolate(), "test.html", 3, -1);
ClearBreakPointFromJS(env->GetIsolate(), sbp1);
ClearBreakPointFromJS(env->GetIsolate(), sbp2);
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
CheckDebuggerUnloaded(env->GetIsolate());
}
// Test that it is possible to remove the last break point for a function
// inside the break handling of that break point.
TEST(RemoveBreakPointInBreak) {
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
v8::Local<v8::Context> context = env.context();
v8::Local<v8::Function> foo =
CompileFunction(&env, "function foo(){a=1;}", "foo");
// Register the debug event listener pasing the function
v8::Debug::SetDebugEventListener(env->GetIsolate(),
DebugEventRemoveBreakPoint, foo);
debug_event_remove_break_point = SetBreakPoint(foo, 0);
break_point_hit_count = 0;
foo->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(1, break_point_hit_count);
break_point_hit_count = 0;
foo->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(0, break_point_hit_count);
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
CheckDebuggerUnloaded(env->GetIsolate());
}
// Test that the debugger statement causes a break.
TEST(DebuggerStatement) {
break_point_hit_count = 0;
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
v8::Debug::SetDebugEventListener(env->GetIsolate(),
DebugEventBreakPointHitCount);
v8::Local<v8::Context> context = env.context();
v8::Script::Compile(context,
v8_str(env->GetIsolate(), "function bar(){debugger}"))
.ToLocalChecked()
->Run(context)
.ToLocalChecked();
v8::Script::Compile(
context, v8_str(env->GetIsolate(), "function foo(){debugger;debugger;}"))
.ToLocalChecked()
->Run(context)
.ToLocalChecked();
v8::Local<v8::Function> foo = v8::Local<v8::Function>::Cast(
env->Global()
->Get(context, v8_str(env->GetIsolate(), "foo"))
.ToLocalChecked());
v8::Local<v8::Function> bar = v8::Local<v8::Function>::Cast(
env->Global()
->Get(context, v8_str(env->GetIsolate(), "bar"))
.ToLocalChecked());
// Run function with debugger statement
bar->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(1, break_point_hit_count);
// Run function with two debugger statement
foo->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(3, break_point_hit_count);
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
CheckDebuggerUnloaded(env->GetIsolate());
}
// Test setting a breakpoint on the debugger statement.
TEST(DebuggerStatementBreakpoint) {
break_point_hit_count = 0;
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
v8::Local<v8::Context> context = env.context();
v8::Debug::SetDebugEventListener(env->GetIsolate(),
DebugEventBreakPointHitCount);
v8::Script::Compile(context,
v8_str(env->GetIsolate(), "function foo(){debugger;}"))
.ToLocalChecked()
->Run(context)
.ToLocalChecked();
v8::Local<v8::Function> foo = v8::Local<v8::Function>::Cast(
env->Global()
->Get(context, v8_str(env->GetIsolate(), "foo"))
.ToLocalChecked());
// The debugger statement triggers breakpoint hit
foo->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(1, break_point_hit_count);
int bp = SetBreakPoint(foo, 0);
// Set breakpoint does not duplicate hits
foo->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(2, break_point_hit_count);
ClearBreakPoint(bp);
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
CheckDebuggerUnloaded(env->GetIsolate());
}
// Test that the evaluation of expressions when a break point is hit generates
// the correct results.
TEST(DebugEvaluate) {
DebugLocalContext env;
v8::Isolate* isolate = env->GetIsolate();
v8::HandleScope scope(isolate);
env.ExposeDebug();
// Create a function for checking the evaluation when hitting a break point.
evaluate_check_function = CompileFunction(&env,
evaluate_check_source,
"evaluate_check");
// Register the debug event listener
v8::Debug::SetDebugEventListener(isolate, DebugEventEvaluate);
// Different expected vaules of x and a when in a break point (u = undefined,
// d = Hello, world!).
struct EvaluateCheck checks_uu[] = {{"x", v8::Undefined(isolate)},
{"a", v8::Undefined(isolate)},
{NULL, v8::Local<v8::Value>()}};
struct EvaluateCheck checks_hu[] = {
{"x", v8_str(env->GetIsolate(), "Hello, world!")},
{"a", v8::Undefined(isolate)},
{NULL, v8::Local<v8::Value>()}};
struct EvaluateCheck checks_hh[] = {
{"x", v8_str(env->GetIsolate(), "Hello, world!")},
{"a", v8_str(env->GetIsolate(), "Hello, world!")},
{NULL, v8::Local<v8::Value>()}};
// Simple test function. The "y=0" is in the function foo to provide a break
// location. For "y=0" the "y" is at position 15 in the foo function
// therefore setting breakpoint at position 15 will break at "y=0" and
// setting it higher will break after.
v8::Local<v8::Function> foo = CompileFunction(&env,
"function foo(x) {"
" var a;"
" y=0;" // To ensure break location 1.
" a=x;"
" y=0;" // To ensure break location 2.
"}",
"foo");
const int foo_break_position_1 = 15;
const int foo_break_position_2 = 29;
v8::Local<v8::Context> context = env.context();
// Arguments with one parameter "Hello, world!"
v8::Local<v8::Value> argv_foo[1] = {
v8_str(env->GetIsolate(), "Hello, world!")};
// Call foo with breakpoint set before a=x and undefined as parameter.
int bp = SetBreakPoint(foo, foo_break_position_1);
checks = checks_uu;
foo->Call(context, env->Global(), 0, NULL).ToLocalChecked();
// Call foo with breakpoint set before a=x and parameter "Hello, world!".
checks = checks_hu;
foo->Call(context, env->Global(), 1, argv_foo).ToLocalChecked();
// Call foo with breakpoint set after a=x and parameter "Hello, world!".
ClearBreakPoint(bp);
SetBreakPoint(foo, foo_break_position_2);
checks = checks_hh;
foo->Call(context, env->Global(), 1, argv_foo).ToLocalChecked();
// Test that overriding Object.prototype will not interfere into evaluation
// on call frame.
v8::Local<v8::Function> zoo =
CompileFunction(&env,
"x = undefined;"
"function zoo(t) {"
" var a=x;"
" Object.prototype.x = 42;"
" x=t;"
" y=0;" // To ensure break location.
" delete Object.prototype.x;"
" x=a;"
"}",
"zoo");
const int zoo_break_position = 50;
// Arguments with one parameter "Hello, world!"
v8::Local<v8::Value> argv_zoo[1] = {
v8_str(env->GetIsolate(), "Hello, world!")};
// Call zoo with breakpoint set at y=0.
DebugEventCounterClear();
bp = SetBreakPoint(zoo, zoo_break_position);
checks = checks_hu;
zoo->Call(context, env->Global(), 1, argv_zoo).ToLocalChecked();
CHECK_EQ(1, break_point_hit_count);
ClearBreakPoint(bp);
// Test function with an inner function. The "y=0" is in function barbar
// to provide a break location. For "y=0" the "y" is at position 8 in the
// barbar function therefore setting breakpoint at position 8 will break at
// "y=0" and setting it higher will break after.
v8::Local<v8::Function> bar = CompileFunction(&env,
"y = 0;"
"x = 'Goodbye, world!';"
"function bar(x, b) {"
" var a;"
" function barbar() {"
" y=0; /* To ensure break location.*/"
" a=x;"
" };"
" debug.Debug.clearAllBreakPoints();"
" barbar();"
" y=0;a=x;"
"}",
"bar");
const int barbar_break_position = 8;
// Call bar setting breakpoint before a=x in barbar and undefined as
// parameter.
checks = checks_uu;
v8::Local<v8::Value> argv_bar_1[2] = {
v8::Undefined(isolate), v8::Number::New(isolate, barbar_break_position)};
bar->Call(context, env->Global(), 2, argv_bar_1).ToLocalChecked();
// Call bar setting breakpoint before a=x in barbar and parameter
// "Hello, world!".
checks = checks_hu;
v8::Local<v8::Value> argv_bar_2[2] = {
v8_str(env->GetIsolate(), "Hello, world!"),
v8::Number::New(env->GetIsolate(), barbar_break_position)};
bar->Call(context, env->Global(), 2, argv_bar_2).ToLocalChecked();
// Call bar setting breakpoint after a=x in barbar and parameter
// "Hello, world!".
checks = checks_hh;
v8::Local<v8::Value> argv_bar_3[2] = {
v8_str(env->GetIsolate(), "Hello, world!"),
v8::Number::New(env->GetIsolate(), barbar_break_position + 1)};
bar->Call(context, env->Global(), 2, argv_bar_3).ToLocalChecked();
v8::Debug::SetDebugEventListener(isolate, nullptr);
CheckDebuggerUnloaded(isolate);
}
int debugEventCount = 0;
static void CheckDebugEvent(const v8::Debug::EventDetails& eventDetails) {
if (eventDetails.GetEvent() == v8::Break) ++debugEventCount;
}
// Test that the conditional breakpoints work event if code generation from
// strings is prohibited in the debugee context.
TEST(ConditionalBreakpointWithCodeGenerationDisallowed) {
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
env.ExposeDebug();
v8::Debug::SetDebugEventListener(env->GetIsolate(), CheckDebugEvent);
v8::Local<v8::Context> context = env.context();
v8::Local<v8::Function> foo = CompileFunction(&env,
"function foo(x) {\n"
" var s = 'String value2';\n"
" return s + x;\n"
"}",
"foo");
// Set conditional breakpoint with condition 'true'.
CompileRun("debug.Debug.setBreakPoint(foo, 2, 0, 'true')");
debugEventCount = 0;
env->AllowCodeGenerationFromStrings(false);
foo->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(1, debugEventCount);
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
CheckDebuggerUnloaded(env->GetIsolate());
}
bool checkedDebugEvals = true;
v8::Local<v8::Function> checkGlobalEvalFunction;
v8::Local<v8::Function> checkFrameEvalFunction;
static void CheckDebugEval(const v8::Debug::EventDetails& eventDetails) {
if (eventDetails.GetEvent() == v8::Break) {
++debugEventCount;
v8::HandleScope handleScope(CcTest::isolate());
v8::Local<v8::Value> args[] = {eventDetails.GetExecutionState()};
CHECK(
checkGlobalEvalFunction->Call(eventDetails.GetEventContext(),
eventDetails.GetEventContext()->Global(),
1, args)
.ToLocalChecked()
->IsTrue());
CHECK(checkFrameEvalFunction->Call(eventDetails.GetEventContext(),
eventDetails.GetEventContext()->Global(),
1, args)
.ToLocalChecked()
->IsTrue());
}
}
// Test that the evaluation of expressions when a break point is hit generates
// the correct results in case code generation from strings is disallowed in the
// debugee context.
TEST(DebugEvaluateWithCodeGenerationDisallowed) {
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
env.ExposeDebug();
v8::Debug::SetDebugEventListener(env->GetIsolate(), CheckDebugEval);
v8::Local<v8::Context> context = env.context();
v8::Local<v8::Function> foo = CompileFunction(&env,
"var global = 'Global';\n"
"function foo(x) {\n"
" var local = 'Local';\n"
" debugger;\n"
" return local + x;\n"
"}",
"foo");
checkGlobalEvalFunction = CompileFunction(&env,
"function checkGlobalEval(exec_state) {\n"
" return exec_state.evaluateGlobal('global').value() === 'Global';\n"
"}",
"checkGlobalEval");
checkFrameEvalFunction = CompileFunction(&env,
"function checkFrameEval(exec_state) {\n"
" return exec_state.frame(0).evaluate('local').value() === 'Local';\n"
"}",
"checkFrameEval");
debugEventCount = 0;
env->AllowCodeGenerationFromStrings(false);
foo->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(1, debugEventCount);
checkGlobalEvalFunction.Clear();
checkFrameEvalFunction.Clear();
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
CheckDebuggerUnloaded(env->GetIsolate());
}
// Simple test of the stepping mechanism using only store ICs.
TEST(DebugStepLinear) {
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
// Create a function for testing stepping.
v8::Local<v8::Function> foo = CompileFunction(&env,
"function foo(){a=1;b=1;c=1;}",
"foo");
// Run foo to allow it to get optimized.
CompileRun("a=0; b=0; c=0; foo();");
// Register a debug event listener which steps and counts.
v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventStep);
SetBreakPoint(foo, 3);
step_action = StepIn;
break_point_hit_count = 0;
v8::Local<v8::Context> context = env.context();
foo->Call(context, env->Global(), 0, NULL).ToLocalChecked();
// With stepping all break locations are hit.
CHECK_EQ(4, break_point_hit_count);
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
CheckDebuggerUnloaded(env->GetIsolate());
// Register a debug event listener which just counts.
v8::Debug::SetDebugEventListener(env->GetIsolate(),
DebugEventBreakPointHitCount);
SetBreakPoint(foo, 3);
break_point_hit_count = 0;
foo->Call(context, env->Global(), 0, NULL).ToLocalChecked();
// Without stepping only active break points are hit.
CHECK_EQ(1, break_point_hit_count);
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
CheckDebuggerUnloaded(env->GetIsolate());
}
// Test of the stepping mechanism for keyed load in a loop.
TEST(DebugStepKeyedLoadLoop) {
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
// Register a debug event listener which steps and counts.
v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventStep);
// Create a function for testing stepping of keyed load. The statement 'y=1'
// is there to have more than one breakable statement in the loop, TODO(315).
v8::Local<v8::Function> foo = CompileFunction(
&env,
"function foo(a) {\n"
" var x;\n"
" var len = a.length;\n"
" for (var i = 0; i < len; i++) {\n"
" y = 1;\n"
" x = a[i];\n"
" }\n"
"}\n"
"y=0\n",
"foo");
v8::Local<v8::Context> context = env.context();
// Create array [0,1,2,3,4,5,6,7,8,9]
v8::Local<v8::Array> a = v8::Array::New(env->GetIsolate(), 10);
for (int i = 0; i < 10; i++) {
CHECK(a->Set(context, v8::Number::New(env->GetIsolate(), i),
v8::Number::New(env->GetIsolate(), i))
.FromJust());
}
// Call function without any break points to ensure inlining is in place.
const int kArgc = 1;
v8::Local<v8::Value> args[kArgc] = {a};
foo->Call(context, env->Global(), kArgc, args).ToLocalChecked();
// Set up break point and step through the function.
SetBreakPoint(foo, 3);
step_action = StepNext;
break_point_hit_count = 0;
foo->Call(context, env->Global(), kArgc, args).ToLocalChecked();
// With stepping all break locations are hit.
CHECK_EQ(44, break_point_hit_count);
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
CheckDebuggerUnloaded(env->GetIsolate());
}
// Test of the stepping mechanism for keyed store in a loop.
TEST(DebugStepKeyedStoreLoop) {
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
// Register a debug event listener which steps and counts.
v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventStep);
// Create a function for testing stepping of keyed store. The statement 'y=1'
// is there to have more than one breakable statement in the loop, TODO(315).
v8::Local<v8::Function> foo = CompileFunction(
&env,
"function foo(a) {\n"
" var len = a.length;\n"
" for (var i = 0; i < len; i++) {\n"
" y = 1;\n"
" a[i] = 42;\n"
" }\n"
"}\n"
"y=0\n",
"foo");
v8::Local<v8::Context> context = env.context();
// Create array [0,1,2,3,4,5,6,7,8,9]
v8::Local<v8::Array> a = v8::Array::New(env->GetIsolate(), 10);
for (int i = 0; i < 10; i++) {
CHECK(a->Set(context, v8::Number::New(env->GetIsolate(), i),
v8::Number::New(env->GetIsolate(), i))
.FromJust());
}
// Call function without any break points to ensure inlining is in place.
const int kArgc = 1;
v8::Local<v8::Value> args[kArgc] = {a};
foo->Call(context, env->Global(), kArgc, args).ToLocalChecked();
// Set up break point and step through the function.
SetBreakPoint(foo, 3);
step_action = StepNext;
break_point_hit_count = 0;
foo->Call(context, env->Global(), kArgc, args).ToLocalChecked();
// With stepping all break locations are hit.
CHECK_EQ(44, break_point_hit_count);
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
CheckDebuggerUnloaded(env->GetIsolate());
}
// Test of the stepping mechanism for named load in a loop.
TEST(DebugStepNamedLoadLoop) {
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
// Register a debug event listener which steps and counts.
v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventStep);
v8::Local<v8::Context> context = env.context();
// Create a function for testing stepping of named load.
v8::Local<v8::Function> foo = CompileFunction(
&env,
"function foo() {\n"
" var a = [];\n"
" var s = \"\";\n"
" for (var i = 0; i < 10; i++) {\n"
" var v = new V(i, i + 1);\n"
" v.y;\n"
" a.length;\n" // Special case: array length.
" s.length;\n" // Special case: string length.
" }\n"
"}\n"
"function V(x, y) {\n"
" this.x = x;\n"
" this.y = y;\n"
"}\n",
"foo");
// Call function without any break points to ensure inlining is in place.
foo->Call(context, env->Global(), 0, NULL).ToLocalChecked();
// Set up break point and step through the function.
SetBreakPoint(foo, 4);
step_action = StepNext;
break_point_hit_count = 0;
foo->Call(context, env->Global(), 0, NULL).ToLocalChecked();
// With stepping all break locations are hit.
CHECK_EQ(65, break_point_hit_count);
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
CheckDebuggerUnloaded(env->GetIsolate());
}
static void DoDebugStepNamedStoreLoop(int expected) {
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
// Register a debug event listener which steps and counts.
v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventStep);
// Create a function for testing stepping of named store.
v8::Local<v8::Context> context = env.context();
v8::Local<v8::Function> foo = CompileFunction(
&env,
"function foo() {\n"
" var a = {a:1};\n"
" for (var i = 0; i < 10; i++) {\n"
" a.a = 2\n"
" }\n"
"}\n",
"foo");
// Call function without any break points to ensure inlining is in place.
foo->Call(context, env->Global(), 0, NULL).ToLocalChecked();
// Set up break point and step through the function.
SetBreakPoint(foo, 3);
step_action = StepNext;
break_point_hit_count = 0;
foo->Call(context, env->Global(), 0, NULL).ToLocalChecked();
// With stepping all expected break locations are hit.
CHECK_EQ(expected, break_point_hit_count);
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
CheckDebuggerUnloaded(env->GetIsolate());
}
// Test of the stepping mechanism for named load in a loop.
TEST(DebugStepNamedStoreLoop) { DoDebugStepNamedStoreLoop(34); }
// Test the stepping mechanism with different ICs.
TEST(DebugStepLinearMixedICs) {
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
// Register a debug event listener which steps and counts.
v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventStep);
v8::Local<v8::Context> context = env.context();
// Create a function for testing stepping.
v8::Local<v8::Function> foo = CompileFunction(&env,
"function bar() {};"
"function foo() {"
" var x;"
" var index='name';"
" var y = {};"
" a=1;b=2;x=a;y[index]=3;x=y[index];bar();}", "foo");
// Run functions to allow them to get optimized.
CompileRun("a=0; b=0; bar(); foo();");
SetBreakPoint(foo, 0);
step_action = StepIn;
break_point_hit_count = 0;
foo->Call(context, env->Global(), 0, NULL).ToLocalChecked();
// With stepping all break locations are hit.
CHECK_EQ(10, break_point_hit_count);
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
CheckDebuggerUnloaded(env->GetIsolate());
// Register a debug event listener which just counts.
v8::Debug::SetDebugEventListener(env->GetIsolate(),
DebugEventBreakPointHitCount);
SetBreakPoint(foo, 0);
break_point_hit_count = 0;
foo->Call(context, env->Global(), 0, NULL).ToLocalChecked();
// Without stepping only active break points are hit.
CHECK_EQ(1, break_point_hit_count);
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
CheckDebuggerUnloaded(env->GetIsolate());
}
TEST(DebugStepDeclarations) {
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
// Register a debug event listener which steps and counts.
v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventStep);
v8::Local<v8::Context> context = env.context();
// Create a function for testing stepping. Run it to allow it to get
// optimized.
const char* src = "function foo() { "
" var a;"
" var b = 1;"
" var c = foo;"
" var d = Math.floor;"
" var e = b + d(1.2);"
"}"
"foo()";
v8::Local<v8::Function> foo = CompileFunction(&env, src, "foo");
SetBreakPoint(foo, 0);
// Stepping through the declarations.
step_action = StepIn;
break_point_hit_count = 0;
foo->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(5, break_point_hit_count);
// Get rid of the debug event listener.
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
CheckDebuggerUnloaded(env->GetIsolate());
}
TEST(DebugStepLocals) {
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
// Register a debug event listener which steps and counts.
v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventStep);
v8::Local<v8::Context> context = env.context();
// Create a function for testing stepping. Run it to allow it to get
// optimized.
const char* src = "function foo() { "
" var a,b;"
" a = 1;"
" b = a + 2;"
" b = 1 + 2 + 3;"
" a = Math.floor(b);"
"}"
"foo()";
v8::Local<v8::Function> foo = CompileFunction(&env, src, "foo");
SetBreakPoint(foo, 0);
// Stepping through the declarations.
step_action = StepIn;
break_point_hit_count = 0;
foo->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(5, break_point_hit_count);
// Get rid of the debug event listener.
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
CheckDebuggerUnloaded(env->GetIsolate());
}
TEST(DebugStepIf) {
DebugLocalContext env;
v8::Isolate* isolate = env->GetIsolate();
v8::HandleScope scope(isolate);
// Register a debug event listener which steps and counts.
v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventStep);
v8::Local<v8::Context> context = env.context();
// Create a function for testing stepping. Run it to allow it to get
// optimized.
const int argc = 1;
const char* src = "function foo(x) { "
" a = 1;"
" if (x) {"
" b = 1;"
" } else {"
" c = 1;"
" d = 1;"
" }"
"}"
"a=0; b=0; c=0; d=0; foo()";
v8::Local<v8::Function> foo = CompileFunction(&env, src, "foo");
SetBreakPoint(foo, 0);
// Stepping through the true part.
step_action = StepIn;
break_point_hit_count = 0;
v8::Local<v8::Value> argv_true[argc] = {v8::True(isolate)};
foo->Call(context, env->Global(), argc, argv_true).ToLocalChecked();
CHECK_EQ(4, break_point_hit_count);
// Stepping through the false part.
step_action = StepIn;
break_point_hit_count = 0;
v8::Local<v8::Value> argv_false[argc] = {v8::False(isolate)};
foo->Call(context, env->Global(), argc, argv_false).ToLocalChecked();
CHECK_EQ(5, break_point_hit_count);
// Get rid of the debug event listener.
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
CheckDebuggerUnloaded(isolate);
}
TEST(DebugStepSwitch) {
DebugLocalContext env;
v8::Isolate* isolate = env->GetIsolate();
v8::HandleScope scope(isolate);
// Register a debug event listener which steps and counts.
v8::Debug::SetDebugEventListener(isolate, DebugEventStep);
v8::Local<v8::Context> context = env.context();
// Create a function for testing stepping. Run it to allow it to get
// optimized.
const int argc = 1;
const char* src = "function foo(x) { "
" a = 1;"
" switch (x) {"
" case 1:"
" b = 1;"
" case 2:"
" c = 1;"
" break;"
" case 3:"
" d = 1;"
" e = 1;"
" f = 1;"
" break;"
" }"
"}"
"a=0; b=0; c=0; d=0; e=0; f=0; foo()";
v8::Local<v8::Function> foo = CompileFunction(&env, src, "foo");
SetBreakPoint(foo, 0);
// One case with fall-through.
step_action = StepIn;
break_point_hit_count = 0;
v8::Local<v8::Value> argv_1[argc] = {v8::Number::New(isolate, 1)};
foo->Call(context, env->Global(), argc, argv_1).ToLocalChecked();
CHECK_EQ(6, break_point_hit_count);
// Another case.
step_action = StepIn;
break_point_hit_count = 0;
v8::Local<v8::Value> argv_2[argc] = {v8::Number::New(isolate, 2)};
foo->Call(context, env->Global(), argc, argv_2).ToLocalChecked();
CHECK_EQ(5, break_point_hit_count);
// Last case.
step_action = StepIn;
break_point_hit_count = 0;
v8::Local<v8::Value> argv_3[argc] = {v8::Number::New(isolate, 3)};
foo->Call(context, env->Global(), argc, argv_3).ToLocalChecked();
CHECK_EQ(7, break_point_hit_count);
// Get rid of the debug event listener.
v8::Debug::SetDebugEventListener(isolate, nullptr);
CheckDebuggerUnloaded(isolate);
}
TEST(DebugStepWhile) {
DebugLocalContext env;
v8::Isolate* isolate = env->GetIsolate();
v8::HandleScope scope(isolate);
// Register a debug event listener which steps and counts.
v8::Debug::SetDebugEventListener(isolate, DebugEventStep);
v8::Local<v8::Context> context = env.context();
// Create a function for testing stepping. Run it to allow it to get
// optimized.
const int argc = 1;
const char* src = "function foo(x) { "
" var a = 0;"
" while (a < x) {"
" a++;"
" }"
"}"
"foo()";
v8::Local<v8::Function> foo = CompileFunction(&env, src, "foo");
SetBreakPoint(foo, 8); // "var a = 0;"
// Looping 0 times. We still should break at the while-condition once.
step_action = StepIn;
break_point_hit_count = 0;
v8::Local<v8::Value> argv_0[argc] = {v8::Number::New(isolate, 0)};
foo->Call(context, env->Global(), argc, argv_0).ToLocalChecked();
CHECK_EQ(3, break_point_hit_count);
// Looping 10 times.
step_action = StepIn;
break_point_hit_count = 0;
v8::Local<v8::Value> argv_10[argc] = {v8::Number::New(isolate, 10)};
foo->Call(context, env->Global(), argc, argv_10).ToLocalChecked();
CHECK_EQ(23, break_point_hit_count);
// Looping 100 times.
step_action = StepIn;
break_point_hit_count = 0;
v8::Local<v8::Value> argv_100[argc] = {v8::Number::New(isolate, 100)};
foo->Call(context, env->Global(), argc, argv_100).ToLocalChecked();
CHECK_EQ(203, break_point_hit_count);
// Get rid of the debug event listener.
v8::Debug::SetDebugEventListener(isolate, nullptr);
CheckDebuggerUnloaded(isolate);
}
TEST(DebugStepDoWhile) {
DebugLocalContext env;
v8::Isolate* isolate = env->GetIsolate();
v8::HandleScope scope(isolate);
// Register a debug event listener which steps and counts.
v8::Debug::SetDebugEventListener(isolate, DebugEventStep);
v8::Local<v8::Context> context = env.context();
// Create a function for testing stepping. Run it to allow it to get
// optimized.
const int argc = 1;
const char* src = "function foo(x) { "
" var a = 0;"
" do {"
" a++;"
" } while (a < x)"
"}"
"foo()";
v8::Local<v8::Function> foo = CompileFunction(&env, src, "foo");
SetBreakPoint(foo, 8); // "var a = 0;"
// Looping 0 times.
step_action = StepIn;
break_point_hit_count = 0;
v8::Local<v8::Value> argv_0[argc] = {v8::Number::New(isolate, 0)};
foo->Call(context, env->Global(), argc, argv_0).ToLocalChecked();
CHECK_EQ(4, break_point_hit_count);
// Looping 10 times.
step_action = StepIn;
break_point_hit_count = 0;
v8::Local<v8::Value> argv_10[argc] = {v8::Number::New(isolate, 10)};
foo->Call(context, env->Global(), argc, argv_10).ToLocalChecked();
CHECK_EQ(22, break_point_hit_count);
// Looping 100 times.
step_action = StepIn;
break_point_hit_count = 0;
v8::Local<v8::Value> argv_100[argc] = {v8::Number::New(isolate, 100)};
foo->Call(context, env->Global(), argc, argv_100).ToLocalChecked();
CHECK_EQ(202, break_point_hit_count);
// Get rid of the debug event listener.
v8::Debug::SetDebugEventListener(isolate, nullptr);
CheckDebuggerUnloaded(isolate);
}
TEST(DebugStepFor) {
DebugLocalContext env;
v8::Isolate* isolate = env->GetIsolate();
v8::HandleScope scope(isolate);
// Register a debug event listener which steps and counts.
v8::Debug::SetDebugEventListener(isolate, DebugEventStep);
v8::Local<v8::Context> context = env.context();
// Create a function for testing stepping. Run it to allow it to get
// optimized.
const int argc = 1;
const char* src = "function foo(x) { "
" a = 1;"
" for (i = 0; i < x; i++) {"
" b = 1;"
" }"
"}"
"a=0; b=0; i=0; foo()";
v8::Local<v8::Function> foo = CompileFunction(&env, src, "foo");
SetBreakPoint(foo, 8); // "a = 1;"
// Looping 0 times.
step_action = StepIn;
break_point_hit_count = 0;
v8::Local<v8::Value> argv_0[argc] = {v8::Number::New(isolate, 0)};
foo->Call(context, env->Global(), argc, argv_0).ToLocalChecked();
CHECK_EQ(4, break_point_hit_count);
// Looping 10 times.
step_action = StepIn;
break_point_hit_count = 0;
v8::Local<v8::Value> argv_10[argc] = {v8::Number::New(isolate, 10)};
foo->Call(context, env->Global(), argc, argv_10).ToLocalChecked();
CHECK_EQ(34, break_point_hit_count);
// Looping 100 times.
step_action = StepIn;
break_point_hit_count = 0;
v8::Local<v8::Value> argv_100[argc] = {v8::Number::New(isolate, 100)};
foo->Call(context, env->Global(), argc, argv_100).ToLocalChecked();
CHECK_EQ(304, break_point_hit_count);
// Get rid of the debug event listener.
v8::Debug::SetDebugEventListener(isolate, nullptr);
CheckDebuggerUnloaded(isolate);
}
TEST(DebugStepForContinue) {
DebugLocalContext env;
v8::Isolate* isolate = env->GetIsolate();
v8::HandleScope scope(isolate);
// Register a debug event listener which steps and counts.
v8::Debug::SetDebugEventListener(isolate, DebugEventStep);
v8::Local<v8::Context> context = env.context();
// Create a function for testing stepping. Run it to allow it to get
// optimized.
const int argc = 1;
const char* src = "function foo(x) { "
" var a = 0;"
" var b = 0;"
" var c = 0;"
" for (var i = 0; i < x; i++) {"
" a++;"
" if (a % 2 == 0) continue;"
" b++;"
" c++;"
" }"
" return b;"
"}"
"foo()";
v8::Local<v8::Function> foo = CompileFunction(&env, src, "foo");
v8::Local<v8::Value> result;
SetBreakPoint(foo, 8); // "var a = 0;"
// Each loop generates 4 or 5 steps depending on whether a is equal.
// Looping 10 times.
step_action = StepIn;
break_point_hit_count = 0;
v8::Local<v8::Value> argv_10[argc] = {v8::Number::New(isolate, 10)};
result = foo->Call(context, env->Global(), argc, argv_10).ToLocalChecked();
CHECK_EQ(5, result->Int32Value(context).FromJust());
CHECK_EQ(62, break_point_hit_count);
// Looping 100 times.
step_action = StepIn;
break_point_hit_count = 0;
v8::Local<v8::Value> argv_100[argc] = {v8::Number::New(isolate, 100)};
result = foo->Call(context, env->Global(), argc, argv_100).ToLocalChecked();
CHECK_EQ(50, result->Int32Value(context).FromJust());
CHECK_EQ(557, break_point_hit_count);
// Get rid of the debug event listener.
v8::Debug::SetDebugEventListener(isolate, nullptr);
CheckDebuggerUnloaded(isolate);
}
TEST(DebugStepForBreak) {
DebugLocalContext env;
v8::Isolate* isolate = env->GetIsolate();
v8::HandleScope scope(isolate);
// Register a debug event listener which steps and counts.
v8::Debug::SetDebugEventListener(isolate, DebugEventStep);
v8::Local<v8::Context> context = env.context();
// Create a function for testing stepping. Run it to allow it to get
// optimized.
const int argc = 1;
const char* src = "function foo(x) { "
" var a = 0;"
" var b = 0;"
" var c = 0;"
" for (var i = 0; i < 1000; i++) {"
" a++;"
" if (a == x) break;"
" b++;"
" c++;"
" }"
" return b;"
"}"
"foo()";
v8::Local<v8::Function> foo = CompileFunction(&env, src, "foo");
v8::Local<v8::Value> result;
SetBreakPoint(foo, 8); // "var a = 0;"
// Each loop generates 5 steps except for the last (when break is executed)
// which only generates 4.
// Looping 10 times.
step_action = StepIn;
break_point_hit_count = 0;
v8::Local<v8::Value> argv_10[argc] = {v8::Number::New(isolate, 10)};
result = foo->Call(context, env->Global(), argc, argv_10).ToLocalChecked();
CHECK_EQ(9, result->Int32Value(context).FromJust());
CHECK_EQ(64, break_point_hit_count);
// Looping 100 times.
step_action = StepIn;
break_point_hit_count = 0;
v8::Local<v8::Value> argv_100[argc] = {v8::Number::New(isolate, 100)};
result = foo->Call(context, env->Global(), argc, argv_100).ToLocalChecked();
CHECK_EQ(99, result->Int32Value(context).FromJust());
CHECK_EQ(604, break_point_hit_count);
// Get rid of the debug event listener.
v8::Debug::SetDebugEventListener(isolate, nullptr);
CheckDebuggerUnloaded(isolate);
}
TEST(DebugStepForIn) {
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
// Register a debug event listener which steps and counts.
v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventStep);
v8::Local<v8::Context> context = env.context();
// Create a function for testing stepping. Run it to allow it to get
// optimized.
v8::Local<v8::Function> foo;
const char* src_1 = "function foo() { "
" var a = [1, 2];"
" for (x in a) {"
" b = 0;"
" }"
"}"
"foo()";
foo = CompileFunction(&env, src_1, "foo");
SetBreakPoint(foo, 0); // "var a = ..."
step_action = StepIn;
break_point_hit_count = 0;
foo->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(8, break_point_hit_count);
// Create a function for testing stepping. Run it to allow it to get
// optimized.
const char* src_2 = "function foo() { "
" var a = {a:[1, 2, 3]};"
" for (x in a.a) {"
" b = 0;"
" }"
"}"
"foo()";
foo = CompileFunction(&env, src_2, "foo");
SetBreakPoint(foo, 0); // "var a = ..."
step_action = StepIn;
break_point_hit_count = 0;
foo->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(10, break_point_hit_count);
// Get rid of the debug event listener.
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
CheckDebuggerUnloaded(env->GetIsolate());
}
TEST(DebugStepWith) {
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
// Register a debug event listener which steps and counts.
v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventStep);
v8::Local<v8::Context> context = env.context();
// Create a function for testing stepping. Run it to allow it to get
// optimized.
const char* src = "function foo(x) { "
" var a = {};"
" with (a) {}"
" with (b) {}"
"}"
"foo()";
CHECK(env->Global()
->Set(context, v8_str(env->GetIsolate(), "b"),
v8::Object::New(env->GetIsolate()))
.FromJust());
v8::Local<v8::Function> foo = CompileFunction(&env, src, "foo");
v8::Local<v8::Value> result;
SetBreakPoint(foo, 8); // "var a = {};"
step_action = StepIn;
break_point_hit_count = 0;
foo->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(4, break_point_hit_count);
// Get rid of the debug event listener.
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
CheckDebuggerUnloaded(env->GetIsolate());
}
TEST(DebugConditional) {
DebugLocalContext env;
v8::Isolate* isolate = env->GetIsolate();
v8::HandleScope scope(isolate);
// Register a debug event listener which steps and counts.
v8::Debug::SetDebugEventListener(isolate, DebugEventStep);
v8::Local<v8::Context> context = env.context();
// Create a function for testing stepping. Run it to allow it to get
// optimized.
const char* src =
"function foo(x) { "
" return x ? 1 : 2;"
"}"
"foo()";
v8::Local<v8::Function> foo = CompileFunction(&env, src, "foo");
SetBreakPoint(foo, 0); // "var a;"
step_action = StepIn;
break_point_hit_count = 0;
foo->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(2, break_point_hit_count);
step_action = StepIn;
break_point_hit_count = 0;
const int argc = 1;
v8::Local<v8::Value> argv_true[argc] = {v8::True(isolate)};
foo->Call(context, env->Global(), argc, argv_true).ToLocalChecked();
CHECK_EQ(2, break_point_hit_count);
// Get rid of the debug event listener.
v8::Debug::SetDebugEventListener(isolate, nullptr);
CheckDebuggerUnloaded(isolate);
}
TEST(StepInOutSimple) {
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
// Create a function for checking the function when hitting a break point.
frame_function_name = CompileFunction(&env,
frame_function_name_source,
"frame_function_name");
// Register a debug event listener which steps and counts.
v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventStepSequence);
v8::Local<v8::Context> context = env.context();
// Create a function for testing stepping. Run it to allow it to get
// optimized.
const char* src = "function a() {b();c();}; "
"function b() {c();}; "
"function c() {}; "
"a(); b(); c()";
v8::Local<v8::Function> a = CompileFunction(&env, src, "a");
SetBreakPoint(a, 0);
// Step through invocation of a with step in.
step_action = StepIn;
break_point_hit_count = 0;
expected_step_sequence = "abcbaca";
a->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(StrLength(expected_step_sequence),
break_point_hit_count);
// Step through invocation of a with step next.
step_action = StepNext;
break_point_hit_count = 0;
expected_step_sequence = "aaa";
a->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(StrLength(expected_step_sequence),
break_point_hit_count);
// Step through invocation of a with step out.
step_action = StepOut;
break_point_hit_count = 0;
expected_step_sequence = "a";
a->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(StrLength(expected_step_sequence),
break_point_hit_count);
// Get rid of the debug event listener.
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
CheckDebuggerUnloaded(env->GetIsolate());
}
TEST(StepInOutTree) {
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
// Create a function for checking the function when hitting a break point.
frame_function_name = CompileFunction(&env,
frame_function_name_source,
"frame_function_name");
// Register a debug event listener which steps and counts.
v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventStepSequence);
v8::Local<v8::Context> context = env.context();
// Create a function for testing stepping. Run it to allow it to get
// optimized.
const char* src = "function a() {b(c(d()),d());c(d());d()}; "
"function b(x,y) {c();}; "
"function c(x) {}; "
"function d() {}; "
"a(); b(); c(); d()";
v8::Local<v8::Function> a = CompileFunction(&env, src, "a");
SetBreakPoint(a, 0);
// Step through invocation of a with step in.
step_action = StepIn;
break_point_hit_count = 0;
expected_step_sequence = "adacadabcbadacada";
a->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(StrLength(expected_step_sequence),
break_point_hit_count);
// Step through invocation of a with step next.
step_action = StepNext;
break_point_hit_count = 0;
expected_step_sequence = "aaaa";
a->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(StrLength(expected_step_sequence),
break_point_hit_count);
// Step through invocation of a with step out.
step_action = StepOut;
break_point_hit_count = 0;
expected_step_sequence = "a";
a->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(StrLength(expected_step_sequence),
break_point_hit_count);
// Get rid of the debug event listener.
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
CheckDebuggerUnloaded(env->GetIsolate(), true);
}
TEST(StepInOutBranch) {
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
// Create a function for checking the function when hitting a break point.
frame_function_name = CompileFunction(&env,
frame_function_name_source,
"frame_function_name");
// Register a debug event listener which steps and counts.
v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventStepSequence);
v8::Local<v8::Context> context = env.context();
// Create a function for testing stepping. Run it to allow it to get
// optimized.
const char* src = "function a() {b(false);c();}; "
"function b(x) {if(x){c();};}; "
"function c() {}; "
"a(); b(); c()";
v8::Local<v8::Function> a = CompileFunction(&env, src, "a");
SetBreakPoint(a, 0);
// Step through invocation of a.
step_action = StepIn;
break_point_hit_count = 0;
expected_step_sequence = "abbaca";
a->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(StrLength(expected_step_sequence),
break_point_hit_count);
// Get rid of the debug event listener.
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
CheckDebuggerUnloaded(env->GetIsolate());
}
// Test that step in does not step into native functions.
TEST(DebugStepNatives) {
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
// Create a function for testing stepping.
v8::Local<v8::Function> foo = CompileFunction(
&env,
"function foo(){debugger;Math.sin(1);}",
"foo");
// Register a debug event listener which steps and counts.
v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventStep);
v8::Local<v8::Context> context = env.context();
step_action = StepIn;
break_point_hit_count = 0;
foo->Call(context, env->Global(), 0, NULL).ToLocalChecked();
// With stepping all break locations are hit.
CHECK_EQ(3, break_point_hit_count);
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
CheckDebuggerUnloaded(env->GetIsolate());
// Register a debug event listener which just counts.
v8::Debug::SetDebugEventListener(env->GetIsolate(),
DebugEventBreakPointHitCount);
break_point_hit_count = 0;
foo->Call(context, env->Global(), 0, NULL).ToLocalChecked();
// Without stepping only active break points are hit.
CHECK_EQ(1, break_point_hit_count);
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
CheckDebuggerUnloaded(env->GetIsolate());
}
// Test that step in works with function.apply.
TEST(DebugStepFunctionApply) {
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
// Create a function for testing stepping.
v8::Local<v8::Function> foo = CompileFunction(
&env,
"function bar(x, y, z) { if (x == 1) { a = y; b = z; } }"
"function foo(){ debugger; bar.apply(this, [1,2,3]); }",
"foo");
// Register a debug event listener which steps and counts.
v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventStep);
v8::Local<v8::Context> context = env.context();
step_action = StepIn;
break_point_hit_count = 0;
foo->Call(context, env->Global(), 0, NULL).ToLocalChecked();
// With stepping all break locations are hit.
CHECK_EQ(7, break_point_hit_count);
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
CheckDebuggerUnloaded(env->GetIsolate());
// Register a debug event listener which just counts.
v8::Debug::SetDebugEventListener(env->GetIsolate(),
DebugEventBreakPointHitCount);
break_point_hit_count = 0;
foo->Call(context, env->Global(), 0, NULL).ToLocalChecked();
// Without stepping only the debugger statement is hit.
CHECK_EQ(1, break_point_hit_count);
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
CheckDebuggerUnloaded(env->GetIsolate());
}
// Test that step in works with function.call.
TEST(DebugStepFunctionCall) {
DebugLocalContext env;
v8::Isolate* isolate = env->GetIsolate();
v8::HandleScope scope(isolate);
v8::Local<v8::Context> context = env.context();
// Create a function for testing stepping.
v8::Local<v8::Function> foo = CompileFunction(
&env,
"function bar(x, y, z) { if (x == 1) { a = y; b = z; } }"
"function foo(a){ debugger;"
" if (a) {"
" bar.call(this, 1, 2, 3);"
" } else {"
" bar.call(this, 0);"
" }"
"}",
"foo");
// Register a debug event listener which steps and counts.
v8::Debug::SetDebugEventListener(isolate, DebugEventStep);
step_action = StepIn;
// Check stepping where the if condition in bar is false.
break_point_hit_count = 0;
foo->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(6, break_point_hit_count);
// Check stepping where the if condition in bar is true.
break_point_hit_count = 0;
const int argc = 1;
v8::Local<v8::Value> argv[argc] = {v8::True(isolate)};
foo->Call(context, env->Global(), argc, argv).ToLocalChecked();
CHECK_EQ(8, break_point_hit_count);
v8::Debug::SetDebugEventListener(isolate, nullptr);
CheckDebuggerUnloaded(isolate);
// Register a debug event listener which just counts.
v8::Debug::SetDebugEventListener(isolate, DebugEventBreakPointHitCount);
break_point_hit_count = 0;
foo->Call(context, env->Global(), 0, NULL).ToLocalChecked();
// Without stepping only the debugger statement is hit.
CHECK_EQ(1, break_point_hit_count);
v8::Debug::SetDebugEventListener(isolate, nullptr);
CheckDebuggerUnloaded(isolate);
}
// Test that step in works with Function.call.apply.
TEST(DebugStepFunctionCallApply) {
DebugLocalContext env;
v8::Isolate* isolate = env->GetIsolate();
v8::HandleScope scope(isolate);
v8::Local<v8::Context> context = env.context();
// Create a function for testing stepping.
v8::Local<v8::Function> foo =
CompileFunction(&env,
"function bar() { }"
"function foo(){ debugger;"
" Function.call.apply(bar);"
" Function.call.apply(Function.call, "
"[Function.call, bar]);"
"}",
"foo");
// Register a debug event listener which steps and counts.
v8::Debug::SetDebugEventListener(isolate, DebugEventStep);
step_action = StepIn;
break_point_hit_count = 0;
foo->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(6, break_point_hit_count);
v8::Debug::SetDebugEventListener(isolate, nullptr);
CheckDebuggerUnloaded(isolate);
// Register a debug event listener which just counts.
v8::Debug::SetDebugEventListener(isolate, DebugEventBreakPointHitCount);
break_point_hit_count = 0;
foo->Call(context, env->Global(), 0, NULL).ToLocalChecked();
// Without stepping only the debugger statement is hit.
CHECK_EQ(1, break_point_hit_count);
v8::Debug::SetDebugEventListener(isolate, nullptr);
CheckDebuggerUnloaded(isolate);
}
// Tests that breakpoint will be hit if it's set in script.
TEST(PauseInScript) {
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
env.ExposeDebug();
// Register a debug event listener which counts.
v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventCounter);
v8::Local<v8::Context> context = env.context();
// Create a script that returns a function.
const char* src = "(function (evt) {})";
const char* script_name = "StepInHandlerTest";
v8::ScriptOrigin origin(v8_str(env->GetIsolate(), script_name),
v8::Integer::New(env->GetIsolate(), 0));
v8::Local<v8::Script> script =
v8::Script::Compile(context, v8_str(env->GetIsolate(), src), &origin)
.ToLocalChecked();
// Set breakpoint in the script.
SetScriptBreakPointByNameFromJS(env->GetIsolate(), script_name, 0, -1);
break_point_hit_count = 0;
v8::Local<v8::Value> r = script->Run(context).ToLocalChecked();
CHECK(r->IsFunction());
CHECK_EQ(1, break_point_hit_count);
// Get rid of the debug event listener.
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
CheckDebuggerUnloaded(env->GetIsolate());
}
static void DebugEventCounterCheck(int caught, int uncaught, int message) {
CHECK_EQ(caught, exception_hit_count);
CHECK_EQ(uncaught, uncaught_exception_hit_count);
CHECK_EQ(message, message_callback_count);
}
// Test break on exceptions. For each exception break combination the number
// of debug event exception callbacks and message callbacks are collected. The
// number of debug event exception callbacks are used to check that the
// debugger is called correctly and the number of message callbacks is used to
// check that uncaught exceptions are still returned even if there is a break
// for them.
TEST(BreakOnException) {
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
env.ExposeDebug();
v8::Local<v8::Context> context = env.context();
// Create functions for testing break on exception.
CompileFunction(&env, "function throws(){throw 1;}", "throws");
v8::Local<v8::Function> caught =
CompileFunction(&env,
"function caught(){try {throws();} catch(e) {};}",
"caught");
v8::Local<v8::Function> notCaught =
CompileFunction(&env, "function notCaught(){throws();}", "notCaught");
v8::Local<v8::Function> notCaughtFinally = CompileFunction(
&env, "function notCaughtFinally(){try{throws();}finally{}}",
"notCaughtFinally");
// In this edge case, even though this finally does not propagate the
// exception, the debugger considers this uncaught, since we want to break
// at the first throw for the general case where finally implicitly rethrows.
v8::Local<v8::Function> edgeCaseFinally = CompileFunction(
&env, "function caughtFinally(){L:try{throws();}finally{break L;}}",
"caughtFinally");
env->GetIsolate()->AddMessageListener(MessageCallbackCount);
v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventCounter);
// Initial state should be no break on exceptions.
DebugEventCounterClear();
MessageCallbackCountClear();
caught->Call(context, env->Global(), 0, NULL).ToLocalChecked();
DebugEventCounterCheck(0, 0, 0);
CHECK(notCaught->Call(context, env->Global(), 0, NULL).IsEmpty());
DebugEventCounterCheck(0, 0, 1);
CHECK(notCaughtFinally->Call(context, env->Global(), 0, NULL).IsEmpty());
DebugEventCounterCheck(0, 0, 2);
edgeCaseFinally->Call(context, env->Global(), 0, NULL).ToLocalChecked();
DebugEventCounterCheck(0, 0, 2);
// No break on exception
DebugEventCounterClear();
MessageCallbackCountClear();
ChangeBreakOnException(false, false);
caught->Call(context, env->Global(), 0, NULL).ToLocalChecked();
DebugEventCounterCheck(0, 0, 0);
CHECK(notCaught->Call(context, env->Global(), 0, NULL).IsEmpty());
DebugEventCounterCheck(0, 0, 1);
CHECK(notCaughtFinally->Call(context, env->Global(), 0, NULL).IsEmpty());
DebugEventCounterCheck(0, 0, 2);
edgeCaseFinally->Call(context, env->Global(), 0, NULL).ToLocalChecked();
DebugEventCounterCheck(0, 0, 2);
// Break on uncaught exception
DebugEventCounterClear();
MessageCallbackCountClear();
ChangeBreakOnException(false, true);
caught->Call(context, env->Global(), 0, NULL).ToLocalChecked();
DebugEventCounterCheck(0, 0, 0);
CHECK(notCaught->Call(context, env->Global(), 0, NULL).IsEmpty());
DebugEventCounterCheck(1, 1, 1);
CHECK(notCaughtFinally->Call(context, env->Global(), 0, NULL).IsEmpty());
DebugEventCounterCheck(2, 2, 2);
edgeCaseFinally->Call(context, env->Global(), 0, NULL).ToLocalChecked();
DebugEventCounterCheck(3, 3, 2);
// Break on exception and uncaught exception
DebugEventCounterClear();
MessageCallbackCountClear();
ChangeBreakOnException(true, true);
caught->Call(context, env->Global(), 0, NULL).ToLocalChecked();
DebugEventCounterCheck(1, 0, 0);
CHECK(notCaught->Call(context, env->Global(), 0, NULL).IsEmpty());
DebugEventCounterCheck(2, 1, 1);
CHECK(notCaughtFinally->Call(context, env->Global(), 0, NULL).IsEmpty());
DebugEventCounterCheck(3, 2, 2);
edgeCaseFinally->Call(context, env->Global(), 0, NULL).ToLocalChecked();
DebugEventCounterCheck(4, 3, 2);
// Break on exception
DebugEventCounterClear();
MessageCallbackCountClear();
ChangeBreakOnException(true, false);
caught->Call(context, env->Global(), 0, NULL).ToLocalChecked();
DebugEventCounterCheck(1, 0, 0);
CHECK(notCaught->Call(context, env->Global(), 0, NULL).IsEmpty());
DebugEventCounterCheck(2, 1, 1);
CHECK(notCaughtFinally->Call(context, env->Global(), 0, NULL).IsEmpty());
DebugEventCounterCheck(3, 2, 2);
edgeCaseFinally->Call(context, env->Global(), 0, NULL).ToLocalChecked();
DebugEventCounterCheck(4, 3, 2);
// No break on exception using JavaScript
DebugEventCounterClear();
MessageCallbackCountClear();
ChangeBreakOnExceptionFromJS(env->GetIsolate(), false, false);
caught->Call(context, env->Global(), 0, NULL).ToLocalChecked();
DebugEventCounterCheck(0, 0, 0);
CHECK(notCaught->Call(context, env->Global(), 0, NULL).IsEmpty());
DebugEventCounterCheck(0, 0, 1);
CHECK(notCaughtFinally->Call(context, env->Global(), 0, NULL).IsEmpty());
DebugEventCounterCheck(0, 0, 2);
edgeCaseFinally->Call(context, env->Global(), 0, NULL).ToLocalChecked();
DebugEventCounterCheck(0, 0, 2);
// Break on uncaught exception using JavaScript
DebugEventCounterClear();
MessageCallbackCountClear();
ChangeBreakOnExceptionFromJS(env->GetIsolate(), false, true);
caught->Call(context, env->Global(), 0, NULL).ToLocalChecked();
DebugEventCounterCheck(0, 0, 0);
CHECK(notCaught->Call(context, env->Global(), 0, NULL).IsEmpty());
DebugEventCounterCheck(1, 1, 1);
CHECK(notCaughtFinally->Call(context, env->Global(), 0, NULL).IsEmpty());
DebugEventCounterCheck(2, 2, 2);
edgeCaseFinally->Call(context, env->Global(), 0, NULL).ToLocalChecked();
DebugEventCounterCheck(3, 3, 2);
// Break on exception and uncaught exception using JavaScript
DebugEventCounterClear();
MessageCallbackCountClear();
ChangeBreakOnExceptionFromJS(env->GetIsolate(), true, true);
caught->Call(context, env->Global(), 0, NULL).ToLocalChecked();
DebugEventCounterCheck(1, 0, 0);
CHECK(notCaught->Call(context, env->Global(), 0, NULL).IsEmpty());
DebugEventCounterCheck(2, 1, 1);
CHECK(notCaughtFinally->Call(context, env->Global(), 0, NULL).IsEmpty());
DebugEventCounterCheck(3, 2, 2);
edgeCaseFinally->Call(context, env->Global(), 0, NULL).ToLocalChecked();
DebugEventCounterCheck(4, 3, 2);
// Break on exception using JavaScript
DebugEventCounterClear();
MessageCallbackCountClear();
ChangeBreakOnExceptionFromJS(env->GetIsolate(), true, false);
caught->Call(context, env->Global(), 0, NULL).ToLocalChecked();
DebugEventCounterCheck(1, 0, 0);
CHECK(notCaught->Call(context, env->Global(), 0, NULL).IsEmpty());
DebugEventCounterCheck(2, 1, 1);
CHECK(notCaughtFinally->Call(context, env->Global(), 0, NULL).IsEmpty());
DebugEventCounterCheck(3, 2, 2);
edgeCaseFinally->Call(context, env->Global(), 0, NULL).ToLocalChecked();
DebugEventCounterCheck(4, 3, 2);
// No break on exception using native API
DebugEventCounterClear();
MessageCallbackCountClear();
ChangeBreakOnExceptionFromAPI(env->GetIsolate(),
v8::debug::NoBreakOnException);
caught->Call(context, env->Global(), 0, NULL).ToLocalChecked();
DebugEventCounterCheck(0, 0, 0);
CHECK(notCaught->Call(context, env->Global(), 0, NULL).IsEmpty());
DebugEventCounterCheck(0, 0, 1);
CHECK(notCaughtFinally->Call(context, env->Global(), 0, NULL).IsEmpty());
DebugEventCounterCheck(0, 0, 2);
edgeCaseFinally->Call(context, env->Global(), 0, NULL).ToLocalChecked();
DebugEventCounterCheck(0, 0, 2);
// // Break on uncaught exception using native API
DebugEventCounterClear();
MessageCallbackCountClear();
ChangeBreakOnExceptionFromAPI(env->GetIsolate(),
v8::debug::BreakOnUncaughtException);
caught->Call(context, env->Global(), 0, NULL).ToLocalChecked();
DebugEventCounterCheck(0, 0, 0);
CHECK(notCaught->Call(context, env->Global(), 0, NULL).IsEmpty());
DebugEventCounterCheck(1, 1, 1);
CHECK(notCaughtFinally->Call(context, env->Global(), 0, NULL).IsEmpty());
DebugEventCounterCheck(2, 2, 2);
edgeCaseFinally->Call(context, env->Global(), 0, NULL).ToLocalChecked();
DebugEventCounterCheck(3, 3, 2);
// // Break on exception and uncaught exception using native API
DebugEventCounterClear();
MessageCallbackCountClear();
ChangeBreakOnExceptionFromAPI(env->GetIsolate(),
v8::debug::BreakOnAnyException);
caught->Call(context, env->Global(), 0, NULL).ToLocalChecked();
DebugEventCounterCheck(1, 0, 0);
CHECK(notCaught->Call(context, env->Global(), 0, NULL).IsEmpty());
DebugEventCounterCheck(2, 1, 1);
CHECK(notCaughtFinally->Call(context, env->Global(), 0, NULL).IsEmpty());
DebugEventCounterCheck(3, 2, 2);
edgeCaseFinally->Call(context, env->Global(), 0, NULL).ToLocalChecked();
DebugEventCounterCheck(4, 3, 2);
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
CheckDebuggerUnloaded(env->GetIsolate());
env->GetIsolate()->RemoveMessageListeners(MessageCallbackCount);
}
static void try_finally_original_message(v8::Local<v8::Message> message,
v8::Local<v8::Value> data) {
v8::Local<v8::Context> context = CcTest::isolate()->GetCurrentContext();
CHECK_EQ(2, message->GetLineNumber(context).FromJust());
CHECK_EQ(2, message->GetStartColumn(context).FromJust());
message_callback_count++;
}
TEST(TryFinallyOriginalMessage) {
// Test that the debugger plays nicely with the pending message.
message_callback_count = 0;
DebugEventCounterClear();
DebugLocalContext env;
v8::Isolate* isolate = CcTest::isolate();
isolate->AddMessageListener(try_finally_original_message);
v8::Debug::SetDebugEventListener(isolate, DebugEventCounter);
ChangeBreakOnException(true, true);
v8::HandleScope scope(isolate);
CompileRun(
"try {\n"
" throw 1;\n"
"} finally {\n"
"}\n");
DebugEventCounterCheck(1, 1, 1);
v8::Debug::SetDebugEventListener(isolate, nullptr);
isolate->RemoveMessageListeners(try_finally_original_message);
}
TEST(EvalJSInDebugEventListenerOnNativeReThrownException) {
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
env.ExposeDebug();
// Create functions for testing break on exception.
v8::Local<v8::Function> noThrowJS = CompileFunction(
&env, "function noThrowJS(){var a=[1]; a.push(2); return a.length;}",
"noThrowJS");
debug_event_listener_callback = noThrowJS;
debug_event_listener_callback_result = 2;
env->GetIsolate()->AddMessageListener(MessageCallbackCount);
v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventCounter);
// Break on uncaught exception
ChangeBreakOnException(false, true);
DebugEventCounterClear();
MessageCallbackCountClear();
// ReThrow native error
{
v8::TryCatch tryCatch(env->GetIsolate());
env->GetIsolate()->ThrowException(
v8::Exception::TypeError(v8_str(env->GetIsolate(), "Type error")));
CHECK(tryCatch.HasCaught());
tryCatch.ReThrow();
}
CHECK_EQ(1, exception_hit_count);
CHECK_EQ(1, uncaught_exception_hit_count);
CHECK_EQ(0, message_callback_count); // FIXME: Should it be 1 ?
CHECK(!debug_event_listener_callback.IsEmpty());
debug_event_listener_callback.Clear();
}
// Test break on exception from compiler errors. When compiling using
// v8::Script::Compile there is no JavaScript stack whereas when compiling using
// eval there are JavaScript frames.
TEST(BreakOnCompileException) {
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
v8::Local<v8::Context> context = env.context();
// For this test, we want to break on uncaught exceptions:
ChangeBreakOnException(false, true);
// Create a function for checking the function when hitting a break point.
frame_count = CompileFunction(&env, frame_count_source, "frame_count");
env->GetIsolate()->AddMessageListener(MessageCallbackCount);
v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventCounter);
DebugEventCounterClear();
MessageCallbackCountClear();
// Check initial state.
CHECK_EQ(0, exception_hit_count);
CHECK_EQ(0, uncaught_exception_hit_count);
CHECK_EQ(0, message_callback_count);
CHECK_EQ(-1, last_js_stack_height);
// Throws SyntaxError: Unexpected end of input
CHECK(
v8::Script::Compile(context, v8_str(env->GetIsolate(), "+++")).IsEmpty());
CHECK_EQ(1, exception_hit_count);
CHECK_EQ(1, uncaught_exception_hit_count);
CHECK_EQ(1, message_callback_count);
CHECK_EQ(0, last_js_stack_height); // No JavaScript stack.
// Throws SyntaxError: Unexpected identifier
CHECK(
v8::Script::Compile(context, v8_str(env->GetIsolate(), "x x")).IsEmpty());
CHECK_EQ(2, exception_hit_count);
CHECK_EQ(2, uncaught_exception_hit_count);
CHECK_EQ(2, message_callback_count);
CHECK_EQ(0, last_js_stack_height); // No JavaScript stack.
// Throws SyntaxError: Unexpected end of input
CHECK(v8::Script::Compile(context, v8_str(env->GetIsolate(), "eval('+++')"))
.ToLocalChecked()
->Run(context)
.IsEmpty());
CHECK_EQ(3, exception_hit_count);
CHECK_EQ(3, uncaught_exception_hit_count);
CHECK_EQ(3, message_callback_count);
CHECK_EQ(1, last_js_stack_height);
// Throws SyntaxError: Unexpected identifier
CHECK(v8::Script::Compile(context, v8_str(env->GetIsolate(), "eval('x x')"))
.ToLocalChecked()
->Run(context)
.IsEmpty());
CHECK_EQ(4, exception_hit_count);
CHECK_EQ(4, uncaught_exception_hit_count);
CHECK_EQ(4, message_callback_count);
CHECK_EQ(1, last_js_stack_height);
}
TEST(StepWithException) {
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
// For this test, we want to break on uncaught exceptions:
ChangeBreakOnException(false, true);
// Create a function for checking the function when hitting a break point.
frame_function_name = CompileFunction(&env,
frame_function_name_source,
"frame_function_name");
// Register a debug event listener which steps and counts.
v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventStepSequence);
v8::Local<v8::Context> context = env.context();
// Create functions for testing stepping.
const char* src = "function a() { n(); }; "
"function b() { c(); }; "
"function c() { n(); }; "
"function d() { x = 1; try { e(); } catch(x) { x = 2; } }; "
"function e() { n(); }; "
"function f() { x = 1; try { g(); } catch(x) { x = 2; } }; "
"function g() { h(); }; "
"function h() { x = 1; throw 1; }; ";
// Step through invocation of a.
ClearStepping();
v8::Local<v8::Function> a = CompileFunction(&env, src, "a");
SetBreakPoint(a, 0);
step_action = StepIn;
break_point_hit_count = 0;
expected_step_sequence = "aa";
CHECK(a->Call(context, env->Global(), 0, NULL).IsEmpty());
CHECK_EQ(StrLength(expected_step_sequence),
break_point_hit_count);
// Step through invocation of b + c.
ClearStepping();
v8::Local<v8::Function> b = CompileFunction(&env, src, "b");
SetBreakPoint(b, 0);
step_action = StepIn;
break_point_hit_count = 0;
expected_step_sequence = "bcc";
CHECK(b->Call(context, env->Global(), 0, NULL).IsEmpty());
CHECK_EQ(StrLength(expected_step_sequence),
break_point_hit_count);
// Step through invocation of d + e.
ClearStepping();
v8::Local<v8::Function> d = CompileFunction(&env, src, "d");
SetBreakPoint(d, 0);
ChangeBreakOnException(false, true);
step_action = StepIn;
break_point_hit_count = 0;
expected_step_sequence = "ddedd";
d->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(StrLength(expected_step_sequence),
break_point_hit_count);
// Step through invocation of d + e now with break on caught exceptions.
ChangeBreakOnException(true, true);
step_action = StepIn;
break_point_hit_count = 0;
expected_step_sequence = "ddeedd";
d->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(StrLength(expected_step_sequence),
break_point_hit_count);
// Step through invocation of f + g + h.
ClearStepping();
v8::Local<v8::Function> f = CompileFunction(&env, src, "f");
SetBreakPoint(f, 0);
ChangeBreakOnException(false, true);
step_action = StepIn;
break_point_hit_count = 0;
expected_step_sequence = "ffghhff";
f->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(StrLength(expected_step_sequence),
break_point_hit_count);
// Step through invocation of f + g + h now with break on caught exceptions.
ChangeBreakOnException(true, true);
step_action = StepIn;
break_point_hit_count = 0;
expected_step_sequence = "ffghhhff";
f->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(StrLength(expected_step_sequence),
break_point_hit_count);
// Get rid of the debug event listener.
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
CheckDebuggerUnloaded(env->GetIsolate());
}
TEST(DebugBreak) {
i::FLAG_stress_compaction = false;
#ifdef VERIFY_HEAP
i::FLAG_verify_heap = true;
#endif
DebugLocalContext env;
v8::Isolate* isolate = env->GetIsolate();
v8::HandleScope scope(isolate);
// Register a debug event listener which sets the break flag and counts.
v8::Debug::SetDebugEventListener(isolate, DebugEventBreak);
v8::Local<v8::Context> context = env.context();
// Create a function for testing stepping.
const char* src = "function f0() {}"
"function f1(x1) {}"
"function f2(x1,x2) {}"
"function f3(x1,x2,x3) {}";
v8::Local<v8::Function> f0 = CompileFunction(&env, src, "f0");
v8::Local<v8::Function> f1 = CompileFunction(&env, src, "f1");
v8::Local<v8::Function> f2 = CompileFunction(&env, src, "f2");
v8::Local<v8::Function> f3 = CompileFunction(&env, src, "f3");
// Call the function to make sure it is compiled.
v8::Local<v8::Value> argv[] = {
v8::Number::New(isolate, 1), v8::Number::New(isolate, 1),
v8::Number::New(isolate, 1), v8::Number::New(isolate, 1)};
// Call all functions to make sure that they are compiled.
f0->Call(context, env->Global(), 0, NULL).ToLocalChecked();
f1->Call(context, env->Global(), 0, NULL).ToLocalChecked();
f2->Call(context, env->Global(), 0, NULL).ToLocalChecked();
f3->Call(context, env->Global(), 0, NULL).ToLocalChecked();
// Set the debug break flag.
v8::Debug::DebugBreak(env->GetIsolate());
// Call all functions with different argument count.
break_point_hit_count = 0;
for (unsigned int i = 0; i < arraysize(argv); i++) {
f0->Call(context, env->Global(), i, argv).ToLocalChecked();
f1->Call(context, env->Global(), i, argv).ToLocalChecked();
f2->Call(context, env->Global(), i, argv).ToLocalChecked();
f3->Call(context, env->Global(), i, argv).ToLocalChecked();
}
// One break for each function called.
CHECK(4 * arraysize(argv) == break_point_hit_count);
// Get rid of the debug event listener.
v8::Debug::SetDebugEventListener(isolate, nullptr);
CheckDebuggerUnloaded(isolate);
}
// Test to ensure that JavaScript code keeps running while the debug break
// through the stack limit flag is set but breaks are disabled.
TEST(DisableBreak) {
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
// Register a debug event listener which sets the break flag and counts.
v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventCounter);
v8::Local<v8::Context> context = env.context();
// Create a function for testing stepping.
const char* src = "function f() {g()};function g(){i=0; while(i<10){i++}}";
v8::Local<v8::Function> f = CompileFunction(&env, src, "f");
// Set, test and cancel debug break.
v8::Debug::DebugBreak(env->GetIsolate());
v8::Debug::CancelDebugBreak(env->GetIsolate());
// Set the debug break flag.
v8::Debug::DebugBreak(env->GetIsolate());
// Call all functions with different argument count.
break_point_hit_count = 0;
f->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(1, break_point_hit_count);
{
v8::Debug::DebugBreak(env->GetIsolate());
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(env->GetIsolate());
v8::internal::DisableBreak disable_break(isolate->debug());
f->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(1, break_point_hit_count);
}
f->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(2, break_point_hit_count);
// Get rid of the debug event listener.
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
CheckDebuggerUnloaded(env->GetIsolate());
}
TEST(DisableDebuggerStatement) {
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
// Register a debug event listener which sets the break flag and counts.
v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventCounter);
CompileRun("debugger;");
CHECK_EQ(1, break_point_hit_count);
// Check that we ignore debugger statement when breakpoints aren't active.
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(env->GetIsolate());
isolate->debug()->set_break_points_active(false);
CompileRun("debugger;");
CHECK_EQ(1, break_point_hit_count);
}
static const char* kSimpleExtensionSource =
"(function Foo() {"
" return 4;"
"})() ";
// http://crbug.com/28933
// Test that debug break is disabled when bootstrapper is active.
TEST(NoBreakWhenBootstrapping) {
v8::Isolate* isolate = CcTest::isolate();
v8::HandleScope scope(isolate);
// Register a debug event listener which sets the break flag and counts.
v8::Debug::SetDebugEventListener(isolate, DebugEventCounter);
// Set the debug break flag.
v8::Debug::DebugBreak(isolate);
break_point_hit_count = 0;
{
// Create a context with an extension to make sure that some JavaScript
// code is executed during bootstrapping.
v8::RegisterExtension(new v8::Extension("simpletest",
kSimpleExtensionSource));
const char* extension_names[] = { "simpletest" };
v8::ExtensionConfiguration extensions(1, extension_names);
v8::HandleScope handle_scope(isolate);
v8::Context::New(isolate, &extensions);
}
// Check that no DebugBreak events occured during the context creation.
CHECK_EQ(0, break_point_hit_count);
// Get rid of the debug event listener.
v8::Debug::SetDebugEventListener(isolate, nullptr);
CheckDebuggerUnloaded(isolate);
}
static void NamedEnum(const v8::PropertyCallbackInfo<v8::Array>& info) {
v8::Local<v8::Array> result = v8::Array::New(info.GetIsolate(), 3);
v8::Local<v8::Context> context = info.GetIsolate()->GetCurrentContext();
CHECK(result->Set(context, v8::Integer::New(info.GetIsolate(), 0),
v8_str(info.GetIsolate(), "a"))
.FromJust());
CHECK(result->Set(context, v8::Integer::New(info.GetIsolate(), 1),
v8_str(info.GetIsolate(), "b"))
.FromJust());
CHECK(result->Set(context, v8::Integer::New(info.GetIsolate(), 2),
v8_str(info.GetIsolate(), "c"))
.FromJust());
info.GetReturnValue().Set(result);
}
static void IndexedEnum(const v8::PropertyCallbackInfo<v8::Array>& info) {
v8::Isolate* isolate = info.GetIsolate();
v8::Local<v8::Array> result = v8::Array::New(isolate, 2);
v8::Local<v8::Context> context = info.GetIsolate()->GetCurrentContext();
CHECK(result->Set(context, v8::Integer::New(isolate, 0),
v8::Number::New(isolate, 1))
.FromJust());
CHECK(result->Set(context, v8::Integer::New(isolate, 1),
v8::Number::New(isolate, 10))
.FromJust());
info.GetReturnValue().Set(result);
}
static void NamedGetter(v8::Local<v8::Name> name,
const v8::PropertyCallbackInfo<v8::Value>& info) {
if (name->IsSymbol()) return;
v8::String::Utf8Value n(v8::Local<v8::String>::Cast(name));
if (strcmp(*n, "a") == 0) {
info.GetReturnValue().Set(v8_str(info.GetIsolate(), "AA"));
return;
} else if (strcmp(*n, "b") == 0) {
info.GetReturnValue().Set(v8_str(info.GetIsolate(), "BB"));
return;
} else if (strcmp(*n, "c") == 0) {
info.GetReturnValue().Set(v8_str(info.GetIsolate(), "CC"));
return;
} else {
info.GetReturnValue().SetUndefined();
return;
}
info.GetReturnValue().Set(name);
}
static void IndexedGetter(uint32_t index,
const v8::PropertyCallbackInfo<v8::Value>& info) {
info.GetReturnValue().Set(static_cast<double>(index + 1));
}
TEST(InterceptorPropertyMirror) {
// Create a V8 environment with debug access.
DebugLocalContext env;
v8::Isolate* isolate = env->GetIsolate();
v8::HandleScope scope(isolate);
env.ExposeDebug();
v8::Local<v8::Context> context = env.context();
// Create object with named interceptor.
v8::Local<v8::ObjectTemplate> named = v8::ObjectTemplate::New(isolate);
named->SetHandler(v8::NamedPropertyHandlerConfiguration(
NamedGetter, NULL, NULL, NULL, NamedEnum));
CHECK(env->Global()
->Set(context, v8_str(isolate, "intercepted_named"),
named->NewInstance(context).ToLocalChecked())
.FromJust());
// Create object with indexed interceptor.
v8::Local<v8::ObjectTemplate> indexed = v8::ObjectTemplate::New(isolate);
indexed->SetHandler(v8::IndexedPropertyHandlerConfiguration(
IndexedGetter, NULL, NULL, NULL, IndexedEnum));
CHECK(env->Global()
->Set(context, v8_str(isolate, "intercepted_indexed"),
indexed->NewInstance(context).ToLocalChecked())
.FromJust());
// Create object with both named and indexed interceptor.
v8::Local<v8::ObjectTemplate> both = v8::ObjectTemplate::New(isolate);
both->SetHandler(v8::NamedPropertyHandlerConfiguration(
NamedGetter, NULL, NULL, NULL, NamedEnum));
both->SetHandler(v8::IndexedPropertyHandlerConfiguration(
IndexedGetter, NULL, NULL, NULL, IndexedEnum));
CHECK(env->Global()
->Set(context, v8_str(isolate, "intercepted_both"),
both->NewInstance(context).ToLocalChecked())
.FromJust());
// Get mirrors for the three objects with interceptor.
CompileRun(
"var named_mirror = debug.MakeMirror(intercepted_named);"
"var indexed_mirror = debug.MakeMirror(intercepted_indexed);"
"var both_mirror = debug.MakeMirror(intercepted_both)");
CHECK(CompileRun("named_mirror instanceof debug.ObjectMirror")
->BooleanValue(context)
.FromJust());
CHECK(CompileRun("indexed_mirror instanceof debug.ObjectMirror")
->BooleanValue(context)
.FromJust());
CHECK(CompileRun("both_mirror instanceof debug.ObjectMirror")
->BooleanValue(context)
.FromJust());
// Get the property names from the interceptors
CompileRun(
"named_names = named_mirror.propertyNames();"
"indexed_names = indexed_mirror.propertyNames();"
"both_names = both_mirror.propertyNames()");
CHECK_EQ(3, CompileRun("named_names.length")->Int32Value(context).FromJust());
CHECK_EQ(2,
CompileRun("indexed_names.length")->Int32Value(context).FromJust());
CHECK_EQ(5, CompileRun("both_names.length")->Int32Value(context).FromJust());
// Check the expected number of properties.
const char* source;
source = "named_mirror.properties().length";
CHECK_EQ(3, CompileRun(source)->Int32Value(context).FromJust());
source = "indexed_mirror.properties().length";
CHECK_EQ(2, CompileRun(source)->Int32Value(context).FromJust());
source = "both_mirror.properties().length";
CHECK_EQ(5, CompileRun(source)->Int32Value(context).FromJust());
// Get the interceptor properties for the object with only named interceptor.
CompileRun("var named_values = named_mirror.properties()");
// Check that the properties are interceptor properties.
for (int i = 0; i < 3; i++) {
EmbeddedVector<char, SMALL_STRING_BUFFER_SIZE> buffer;
SNPrintF(buffer,
"named_values[%d] instanceof debug.PropertyMirror", i);
CHECK(CompileRun(buffer.start())->BooleanValue(context).FromJust());
SNPrintF(buffer, "named_values[%d].isNative()", i);
CHECK(CompileRun(buffer.start())->BooleanValue(context).FromJust());
}
// Get the interceptor properties for the object with only indexed
// interceptor.
CompileRun("var indexed_values = indexed_mirror.properties()");
// Check that the properties are interceptor properties.
for (int i = 0; i < 2; i++) {
EmbeddedVector<char, SMALL_STRING_BUFFER_SIZE> buffer;
SNPrintF(buffer,
"indexed_values[%d] instanceof debug.PropertyMirror", i);
CHECK(CompileRun(buffer.start())->BooleanValue(context).FromJust());
}
// Get the interceptor properties for the object with both types of
// interceptors.
CompileRun("var both_values = both_mirror.properties()");
// Check that the properties are interceptor properties.
for (int i = 0; i < 5; i++) {
EmbeddedVector<char, SMALL_STRING_BUFFER_SIZE> buffer;
SNPrintF(buffer, "both_values[%d] instanceof debug.PropertyMirror", i);
CHECK(CompileRun(buffer.start())->BooleanValue(context).FromJust());
}
// Check the property names.
source = "both_values[0].name() == '1'";
CHECK(CompileRun(source)->BooleanValue(context).FromJust());
source = "both_values[1].name() == '10'";
CHECK(CompileRun(source)->BooleanValue(context).FromJust());
source = "both_values[2].name() == 'a'";
CHECK(CompileRun(source)->BooleanValue(context).FromJust());
source = "both_values[3].name() == 'b'";
CHECK(CompileRun(source)->BooleanValue(context).FromJust());
source = "both_values[4].name() == 'c'";
CHECK(CompileRun(source)->BooleanValue(context).FromJust());
}
TEST(HiddenPrototypePropertyMirror) {
// Create a V8 environment with debug access.
DebugLocalContext env;
v8::Isolate* isolate = env->GetIsolate();
v8::HandleScope scope(isolate);
env.ExposeDebug();
v8::Local<v8::FunctionTemplate> t0 = v8::FunctionTemplate::New(isolate);
t0->InstanceTemplate()->Set(v8_str(isolate, "x"),
v8::Number::New(isolate, 0));
v8::Local<v8::FunctionTemplate> t1 = v8::FunctionTemplate::New(isolate);
t1->SetHiddenPrototype(true);
t1->InstanceTemplate()->Set(v8_str(isolate, "y"),
v8::Number::New(isolate, 1));
v8::Local<v8::FunctionTemplate> t2 = v8::FunctionTemplate::New(isolate);
t2->SetHiddenPrototype(true);
t2->InstanceTemplate()->Set(v8_str(isolate, "z"),
v8::Number::New(isolate, 2));
v8::Local<v8::FunctionTemplate> t3 = v8::FunctionTemplate::New(isolate);
t3->InstanceTemplate()->Set(v8_str(isolate, "u"),
v8::Number::New(isolate, 3));
v8::Local<v8::Context> context = env.context();
// Create object and set them on the global object.
v8::Local<v8::Object> o0 = t0->GetFunction(context)
.ToLocalChecked()
->NewInstance(context)
.ToLocalChecked();
CHECK(env->Global()->Set(context, v8_str(isolate, "o0"), o0).FromJust());
v8::Local<v8::Object> o1 = t1->GetFunction(context)
.ToLocalChecked()
->NewInstance(context)
.ToLocalChecked();
CHECK(env->Global()->Set(context, v8_str(isolate, "o1"), o1).FromJust());
v8::Local<v8::Object> o2 = t2->GetFunction(context)
.ToLocalChecked()
->NewInstance(context)
.ToLocalChecked();
CHECK(env->Global()->Set(context, v8_str(isolate, "o2"), o2).FromJust());
v8::Local<v8::Object> o3 = t3->GetFunction(context)
.ToLocalChecked()
->NewInstance(context)
.ToLocalChecked();
CHECK(env->Global()->Set(context, v8_str(isolate, "o3"), o3).FromJust());
// Get mirrors for the four objects.
CompileRun(
"var o0_mirror = debug.MakeMirror(o0);"
"var o1_mirror = debug.MakeMirror(o1);"
"var o2_mirror = debug.MakeMirror(o2);"
"var o3_mirror = debug.MakeMirror(o3)");
CHECK(CompileRun("o0_mirror instanceof debug.ObjectMirror")
->BooleanValue(context)
.FromJust());
CHECK(CompileRun("o1_mirror instanceof debug.ObjectMirror")
->BooleanValue(context)
.FromJust());
CHECK(CompileRun("o2_mirror instanceof debug.ObjectMirror")
->BooleanValue(context)
.FromJust());
CHECK(CompileRun("o3_mirror instanceof debug.ObjectMirror")
->BooleanValue(context)
.FromJust());
// Check that each object has one property.
CHECK_EQ(1, CompileRun("o0_mirror.propertyNames().length")
->Int32Value(context)
.FromJust());
CHECK_EQ(1, CompileRun("o1_mirror.propertyNames().length")
->Int32Value(context)
.FromJust());
CHECK_EQ(1, CompileRun("o2_mirror.propertyNames().length")
->Int32Value(context)
.FromJust());
CHECK_EQ(1, CompileRun("o3_mirror.propertyNames().length")
->Int32Value(context)
.FromJust());
// Set o1 as prototype for o0. o1 has the hidden prototype flag so all
// properties on o1 should be seen on o0.
CHECK(o0->Set(context, v8_str(isolate, "__proto__"), o1).FromJust());
CHECK_EQ(2, CompileRun("o0_mirror.propertyNames().length")
->Int32Value(context)
.FromJust());
CHECK_EQ(0, CompileRun("o0_mirror.property('x').value().value()")
->Int32Value(context)
.FromJust());
CHECK_EQ(1, CompileRun("o0_mirror.property('y').value().value()")
->Int32Value(context)
.FromJust());
// Set o2 as prototype for o0 (it will end up after o1 as o1 has the hidden
// prototype flag. o2 also has the hidden prototype flag so all properties
// on o2 should be seen on o0 as well as properties on o1.
CHECK(o0->Set(context, v8_str(isolate, "__proto__"), o2).FromJust());
CHECK_EQ(3, CompileRun("o0_mirror.propertyNames().length")
->Int32Value(context)
.FromJust());
CHECK_EQ(0, CompileRun("o0_mirror.property('x').value().value()")
->Int32Value(context)
.FromJust());
CHECK_EQ(1, CompileRun("o0_mirror.property('y').value().value()")
->Int32Value(context)
.FromJust());
CHECK_EQ(2, CompileRun("o0_mirror.property('z').value().value()")
->Int32Value(context)
.FromJust());
// Set o3 as prototype for o0 (it will end up after o1 and o2 as both o1 and
// o2 has the hidden prototype flag. o3 does not have the hidden prototype
// flag so properties on o3 should not be seen on o0 whereas the properties
// from o1 and o2 should still be seen on o0.
// Final prototype chain: o0 -> o1 -> o2 -> o3
// Hidden prototypes: ^^ ^^
CHECK(o0->Set(context, v8_str(isolate, "__proto__"), o3).FromJust());
CHECK_EQ(3, CompileRun("o0_mirror.propertyNames().length")
->Int32Value(context)
.FromJust());
CHECK_EQ(1, CompileRun("o3_mirror.propertyNames().length")
->Int32Value(context)
.FromJust());
CHECK_EQ(0, CompileRun("o0_mirror.property('x').value().value()")
->Int32Value(context)
.FromJust());
CHECK_EQ(1, CompileRun("o0_mirror.property('y').value().value()")
->Int32Value(context)
.FromJust());
CHECK_EQ(2, CompileRun("o0_mirror.property('z').value().value()")
->Int32Value(context)
.FromJust());
CHECK(CompileRun("o0_mirror.property('u').isUndefined()")
->BooleanValue(context)
.FromJust());
// The prototype (__proto__) for o0 should be o3 as o1 and o2 are hidden.
CHECK(CompileRun("o0_mirror.protoObject() == o3_mirror")
->BooleanValue(context)
.FromJust());
}
static void ProtperyXNativeGetter(
v8::Local<v8::String> property,
const v8::PropertyCallbackInfo<v8::Value>& info) {
info.GetReturnValue().Set(10);
}
TEST(NativeGetterPropertyMirror) {
// Create a V8 environment with debug access.
DebugLocalContext env;
v8::Isolate* isolate = env->GetIsolate();
v8::HandleScope scope(isolate);
env.ExposeDebug();
v8::Local<v8::Context> context = env.context();
v8::Local<v8::String> name = v8_str(isolate, "x");
// Create object with named accessor.
v8::Local<v8::ObjectTemplate> named = v8::ObjectTemplate::New(isolate);
named->SetAccessor(name, &ProtperyXNativeGetter, NULL, v8::Local<v8::Value>(),
v8::DEFAULT, v8::None);
// Create object with named property getter.
CHECK(env->Global()
->Set(context, v8_str(isolate, "instance"),
named->NewInstance(context).ToLocalChecked())
.FromJust());
CHECK_EQ(10, CompileRun("instance.x")->Int32Value(context).FromJust());
// Get mirror for the object with property getter.
CompileRun("var instance_mirror = debug.MakeMirror(instance);");
CHECK(CompileRun("instance_mirror instanceof debug.ObjectMirror")
->BooleanValue(context)
.FromJust());
CompileRun("var named_names = instance_mirror.propertyNames();");
CHECK_EQ(1, CompileRun("named_names.length")->Int32Value(context).FromJust());
CHECK(CompileRun("named_names[0] == 'x'")->BooleanValue(context).FromJust());
CHECK(CompileRun("instance_mirror.property('x').value().isNumber()")
->BooleanValue(context)
.FromJust());
CHECK(CompileRun("instance_mirror.property('x').value().value() == 10")
->BooleanValue(context)
.FromJust());
}
static void ProtperyXNativeGetterThrowingError(
v8::Local<v8::String> property,
const v8::PropertyCallbackInfo<v8::Value>& info) {
CompileRun("throw new Error('Error message');");
}
TEST(NativeGetterThrowingErrorPropertyMirror) {
// Create a V8 environment with debug access.
DebugLocalContext env;
v8::Isolate* isolate = env->GetIsolate();
v8::HandleScope scope(isolate);
env.ExposeDebug();
v8::Local<v8::Context> context = env.context();
v8::Local<v8::String> name = v8_str(isolate, "x");
// Create object with named accessor.
v8::Local<v8::ObjectTemplate> named = v8::ObjectTemplate::New(isolate);
named->SetAccessor(name, &ProtperyXNativeGetterThrowingError, NULL,
v8::Local<v8::Value>(), v8::DEFAULT, v8::None);
// Create object with named property getter.
CHECK(env->Global()
->Set(context, v8_str(isolate, "instance"),
named->NewInstance(context).ToLocalChecked())
.FromJust());
// Get mirror for the object with property getter.
CompileRun("var instance_mirror = debug.MakeMirror(instance);");
CHECK(CompileRun("instance_mirror instanceof debug.ObjectMirror")
->BooleanValue(context)
.FromJust());
CompileRun("named_names = instance_mirror.propertyNames();");
CHECK_EQ(1, CompileRun("named_names.length")->Int32Value(context).FromJust());
CHECK(CompileRun("named_names[0] == 'x'")->BooleanValue(context).FromJust());
CHECK(CompileRun("instance_mirror.property('x').value().isError()")
->BooleanValue(context)
.FromJust());
// Check that the message is that passed to the Error constructor.
CHECK(
CompileRun(
"instance_mirror.property('x').value().message() == 'Error message'")
->BooleanValue(context)
.FromJust());
}
// Test that hidden properties object is not returned as an unnamed property
// among regular properties.
// See http://crbug.com/26491
TEST(NoHiddenProperties) {
// Create a V8 environment with debug access.
DebugLocalContext env;
v8::Isolate* isolate = env->GetIsolate();
v8::HandleScope scope(isolate);
env.ExposeDebug();
v8::Local<v8::Context> context = env.context();
// Create an object in the global scope.
const char* source = "var obj = {a: 1};";
v8::Script::Compile(context, v8_str(isolate, source))
.ToLocalChecked()
->Run(context)
.ToLocalChecked();
v8::Local<v8::Object> obj = v8::Local<v8::Object>::Cast(
env->Global()->Get(context, v8_str(isolate, "obj")).ToLocalChecked());
// Set a hidden property on the object.
obj->SetPrivate(
env.context(),
v8::Private::New(isolate, v8_str(isolate, "v8::test-debug::a")),
v8::Int32::New(isolate, 11))
.FromJust();
// Get mirror for the object with property getter.
CompileRun("var obj_mirror = debug.MakeMirror(obj);");
CHECK(CompileRun("obj_mirror instanceof debug.ObjectMirror")
->BooleanValue(context)
.FromJust());
CompileRun("var named_names = obj_mirror.propertyNames();");
// There should be exactly one property. But there is also an unnamed
// property whose value is hidden properties dictionary. The latter
// property should not be in the list of reguar properties.
CHECK_EQ(1, CompileRun("named_names.length")->Int32Value(context).FromJust());
CHECK(CompileRun("named_names[0] == 'a'")->BooleanValue(context).FromJust());
CHECK(CompileRun("obj_mirror.property('a').value().value() == 1")
->BooleanValue(context)
.FromJust());
// Object created by t0 will become hidden prototype of object 'obj'.
v8::Local<v8::FunctionTemplate> t0 = v8::FunctionTemplate::New(isolate);
t0->InstanceTemplate()->Set(v8_str(isolate, "b"),
v8::Number::New(isolate, 2));
t0->SetHiddenPrototype(true);
v8::Local<v8::FunctionTemplate> t1 = v8::FunctionTemplate::New(isolate);
t1->InstanceTemplate()->Set(v8_str(isolate, "c"),
v8::Number::New(isolate, 3));
// Create proto objects, add hidden properties to them and set them on
// the global object.
v8::Local<v8::Object> protoObj = t0->GetFunction(context)
.ToLocalChecked()
->NewInstance(context)
.ToLocalChecked();
protoObj->SetPrivate(
env.context(),
v8::Private::New(isolate, v8_str(isolate, "v8::test-debug::b")),
v8::Int32::New(isolate, 12))
.FromJust();
CHECK(env->Global()
->Set(context, v8_str(isolate, "protoObj"), protoObj)
.FromJust());
v8::Local<v8::Object> grandProtoObj = t1->GetFunction(context)
.ToLocalChecked()
->NewInstance(context)
.ToLocalChecked();
grandProtoObj->SetPrivate(env.context(),
v8::Private::New(
isolate, v8_str(isolate, "v8::test-debug::c")),
v8::Int32::New(isolate, 13))
.FromJust();
CHECK(env->Global()
->Set(context, v8_str(isolate, "grandProtoObj"), grandProtoObj)
.FromJust());
// Setting prototypes: obj->protoObj->grandProtoObj
CHECK(protoObj->Set(context, v8_str(isolate, "__proto__"), grandProtoObj)
.FromJust());
CHECK(obj->Set(context, v8_str(isolate, "__proto__"), protoObj).FromJust());
// Get mirror for the object with property getter.
CompileRun("var obj_mirror = debug.MakeMirror(obj);");
CHECK(CompileRun("obj_mirror instanceof debug.ObjectMirror")
->BooleanValue(context)
.FromJust());
CompileRun("var named_names = obj_mirror.propertyNames();");
// There should be exactly two properties - one from the object itself and
// another from its hidden prototype.
CHECK_EQ(2, CompileRun("named_names.length")->Int32Value(context).FromJust());
CHECK(CompileRun("named_names.sort(); named_names[0] == 'a' &&"
"named_names[1] == 'b'")
->BooleanValue(context)
.FromJust());
CHECK(CompileRun("obj_mirror.property('a').value().value() == 1")
->BooleanValue(context)
.FromJust());
CHECK(CompileRun("obj_mirror.property('b').value().value() == 2")
->BooleanValue(context)
.FromJust());
}
TEST(SetDebugEventListenerOnUninitializedVM) {
v8::Debug::SetDebugEventListener(CcTest::isolate(), DummyDebugEventListener);
}
// Source for a JavaScript function which returns the data parameter of a
// function called in the context of the debugger. If no data parameter is
// passed it throws an exception.
static const char* debugger_call_with_data_source =
"function debugger_call_with_data(exec_state, data) {"
" if (data) return data;"
" throw 'No data!'"
"}";
v8::Local<v8::Function> debugger_call_with_data;
// Source for a JavaScript function which returns the data parameter of a
// function called in the context of the debugger. If no data parameter is
// passed it throws an exception.
static const char* debugger_call_with_closure_source =
"var x = 3;"
"(function (exec_state) {"
" if (exec_state.y) return x - 1;"
" exec_state.y = x;"
" return exec_state.y"
"})";
v8::Local<v8::Function> debugger_call_with_closure;
// Function to retrieve the number of JavaScript frames by calling a JavaScript
// in the debugger.
static void CheckFrameCount(const v8::FunctionCallbackInfo<v8::Value>& args) {
v8::Local<v8::Context> context = args.GetIsolate()->GetCurrentContext();
CHECK(v8::Debug::Call(context, frame_count).ToLocalChecked()->IsNumber());
CHECK_EQ(args[0]->Int32Value(context).FromJust(),
v8::Debug::Call(context, frame_count)
.ToLocalChecked()
->Int32Value(context)
.FromJust());
}
// Function to retrieve the source line of the top JavaScript frame by calling a
// JavaScript function in the debugger.
static void CheckSourceLine(const v8::FunctionCallbackInfo<v8::Value>& args) {
v8::Local<v8::Context> context = args.GetIsolate()->GetCurrentContext();
CHECK(
v8::Debug::Call(context, frame_source_line).ToLocalChecked()->IsNumber());
CHECK_EQ(args[0]->Int32Value(context).FromJust(),
v8::Debug::Call(context, frame_source_line)
.ToLocalChecked()
->Int32Value(context)
.FromJust());
}
// Function to test passing an additional parameter to a JavaScript function
// called in the debugger. It also tests that functions called in the debugger
// can throw exceptions.
static void CheckDataParameter(
const v8::FunctionCallbackInfo<v8::Value>& args) {
v8::Local<v8::String> data = v8_str(args.GetIsolate(), "Test");
v8::Local<v8::Context> context = args.GetIsolate()->GetCurrentContext();
CHECK(v8::Debug::Call(context, debugger_call_with_data, data)
.ToLocalChecked()
->IsString());
for (int i = 0; i < 3; i++) {
v8::TryCatch catcher(args.GetIsolate());
CHECK(v8::Debug::Call(context, debugger_call_with_data).IsEmpty());
CHECK(catcher.HasCaught());
CHECK(catcher.Exception()->IsString());
}
}
// Function to test using a JavaScript with closure in the debugger.
static void CheckClosure(const v8::FunctionCallbackInfo<v8::Value>& args) {
v8::Local<v8::Context> context = args.GetIsolate()->GetCurrentContext();
CHECK(v8::Debug::Call(context, debugger_call_with_closure)
.ToLocalChecked()
->IsNumber());
CHECK_EQ(3, v8::Debug::Call(context, debugger_call_with_closure)
.ToLocalChecked()
->Int32Value(context)
.FromJust());
}
// Test functions called through the debugger.
TEST(CallFunctionInDebugger) {
// Create and enter a context with the functions CheckFrameCount,
// CheckSourceLine and CheckDataParameter installed.
v8::Isolate* isolate = CcTest::isolate();
v8::HandleScope scope(isolate);
v8::Local<v8::ObjectTemplate> global_template =
v8::ObjectTemplate::New(isolate);
global_template->Set(v8_str(isolate, "CheckFrameCount"),
v8::FunctionTemplate::New(isolate, CheckFrameCount));
global_template->Set(v8_str(isolate, "CheckSourceLine"),
v8::FunctionTemplate::New(isolate, CheckSourceLine));
global_template->Set(v8_str(isolate, "CheckDataParameter"),
v8::FunctionTemplate::New(isolate, CheckDataParameter));
global_template->Set(v8_str(isolate, "CheckClosure"),
v8::FunctionTemplate::New(isolate, CheckClosure));
v8::Local<v8::Context> context =
v8::Context::New(isolate, NULL, global_template);
v8::Context::Scope context_scope(context);
// Compile a function for checking the number of JavaScript frames.
v8::Script::Compile(context, v8_str(isolate, frame_count_source))
.ToLocalChecked()
->Run(context)
.ToLocalChecked();
frame_count = v8::Local<v8::Function>::Cast(
context->Global()
->Get(context, v8_str(isolate, "frame_count"))
.ToLocalChecked());
// Compile a function for returning the source line for the top frame.
v8::Script::Compile(context, v8_str(isolate, frame_source_line_source))
.ToLocalChecked()
->Run(context)
.ToLocalChecked();
frame_source_line = v8::Local<v8::Function>::Cast(
context->Global()
->Get(context, v8_str(isolate, "frame_source_line"))
.ToLocalChecked());
// Compile a function returning the data parameter.
v8::Script::Compile(context, v8_str(isolate, debugger_call_with_data_source))
.ToLocalChecked()
->Run(context)
.ToLocalChecked();
debugger_call_with_data = v8::Local<v8::Function>::Cast(
context->Global()
->Get(context, v8_str(isolate, "debugger_call_with_data"))
.ToLocalChecked());
// Compile a function capturing closure.
debugger_call_with_closure = v8::Local<v8::Function>::Cast(
v8::Script::Compile(context,
v8_str(isolate, debugger_call_with_closure_source))
.ToLocalChecked()
->Run(context)
.ToLocalChecked());
// Calling a function through the debugger returns 0 frames if there are
// no JavaScript frames.
CHECK(v8::Integer::New(isolate, 0)
->Equals(context,
v8::Debug::Call(context, frame_count).ToLocalChecked())
.FromJust());
// Test that the number of frames can be retrieved.
v8::Script::Compile(context, v8_str(isolate, "CheckFrameCount(1)"))
.ToLocalChecked()
->Run(context)
.ToLocalChecked();
v8::Script::Compile(context, v8_str(isolate,
"function f() {"
" CheckFrameCount(2);"
"}; f()"))
.ToLocalChecked()
->Run(context)
.ToLocalChecked();
// Test that the source line can be retrieved.
v8::Script::Compile(context, v8_str(isolate, "CheckSourceLine(0)"))
.ToLocalChecked()
->Run(context)
.ToLocalChecked();
v8::Script::Compile(context, v8_str(isolate,
"function f() {\n"
" CheckSourceLine(1)\n"
" CheckSourceLine(2)\n"
" CheckSourceLine(3)\n"
"}; f()"))
.ToLocalChecked()
->Run(context)
.ToLocalChecked();
// Test that a parameter can be passed to a function called in the debugger.
v8::Script::Compile(context, v8_str(isolate, "CheckDataParameter()"))
.ToLocalChecked()
->Run(context)
.ToLocalChecked();
// Test that a function with closure can be run in the debugger.
v8::Script::Compile(context, v8_str(isolate, "CheckClosure()"))
.ToLocalChecked()
->Run(context)
.ToLocalChecked();
// Test that the source line is correct when there is a line offset.
v8::ScriptOrigin origin(v8_str(isolate, "test"),
v8::Integer::New(isolate, 7));
v8::Script::Compile(context, v8_str(isolate, "CheckSourceLine(7)"), &origin)
.ToLocalChecked()
->Run(context)
.ToLocalChecked();
v8::Script::Compile(context, v8_str(isolate,
"function f() {\n"
" CheckSourceLine(8)\n"
" CheckSourceLine(9)\n"
" CheckSourceLine(10)\n"
"}; f()"),
&origin)
.ToLocalChecked()
->Run(context)
.ToLocalChecked();
}
// Test that clearing the debug event listener actually clears all break points
// and related information.
TEST(DebuggerUnload) {
DebugLocalContext env;
// Check debugger is unloaded before it is used.
CheckDebuggerUnloaded(env->GetIsolate());
// Set a debug event listener.
break_point_hit_count = 0;
v8::Debug::SetDebugEventListener(env->GetIsolate(),
DebugEventBreakPointHitCount);
v8::Local<v8::Context> context = env.context();
{
v8::HandleScope scope(env->GetIsolate());
// Create a couple of functions for the test.
v8::Local<v8::Function> foo =
CompileFunction(&env, "function foo(){x=1}", "foo");
v8::Local<v8::Function> bar =
CompileFunction(&env, "function bar(){y=2}", "bar");
// Set some break points.
SetBreakPoint(foo, 0);
SetBreakPoint(foo, 4);
SetBreakPoint(bar, 0);
SetBreakPoint(bar, 4);
// Make sure that the break points are there.
break_point_hit_count = 0;
foo->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(2, break_point_hit_count);
bar->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(4, break_point_hit_count);
}
// Remove the debug event listener without clearing breakpoints. Do this
// outside a handle scope.
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
CheckDebuggerUnloaded(env->GetIsolate(), true);
}
int event_listener_hit_count = 0;
// Debugger event listener which clears itself while active.
static void EventListenerClearingItself(
const v8::Debug::EventDetails& details) {
event_listener_hit_count++;
// Clear debug event listener.
v8::Debug::SetDebugEventListener(details.GetIsolate(), nullptr);
}
// Test clearing the debug message handler while processing a debug event.
TEST(DebuggerClearEventListenerWhileActive) {
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
// Check debugger is unloaded before it is used.
CheckDebuggerUnloaded(env->GetIsolate());
// Set a debug event listener.
v8::Debug::SetDebugEventListener(env->GetIsolate(),
EventListenerClearingItself);
// Run code to throw an uncaught exception. This should trigger the listener.
CompileRun("throw 1");
// The event listener should have been called.
CHECK_EQ(1, event_listener_hit_count);
CheckDebuggerUnloaded(env->GetIsolate(), true);
}
// Test for issue http://code.google.com/p/v8/issues/detail?id=289.
// Make sure that DebugGetLoadedScripts doesn't return scripts
// with disposed external source.
class EmptyExternalStringResource : public v8::String::ExternalStringResource {
public:
EmptyExternalStringResource() { empty_[0] = 0; }
virtual ~EmptyExternalStringResource() {}
virtual size_t length() const { return empty_.length(); }
virtual const uint16_t* data() const { return empty_.start(); }
private:
::v8::internal::EmbeddedVector<uint16_t, 1> empty_;
};
TEST(DebugScriptLineEndsAreAscending) {
DebugLocalContext env;
v8::Isolate* isolate = env->GetIsolate();
v8::HandleScope scope(isolate);
env.ExposeDebug();
// Compile a test script.
v8::Local<v8::String> script = v8_str(isolate,
"function f() {\n"
" debugger;\n"
"}\n");
v8::ScriptOrigin origin1 = v8::ScriptOrigin(v8_str(isolate, "name"));
v8::Local<v8::Script> script1 =
v8::Script::Compile(env.context(), script, &origin1).ToLocalChecked();
USE(script1);
Handle<v8::internal::FixedArray> instances;
{
v8::internal::Debug* debug = CcTest::i_isolate()->debug();
v8::internal::DebugScope debug_scope(debug);
CHECK(!debug_scope.failed());
instances = debug->GetLoadedScripts();
}
CHECK_GT(instances->length(), 0);
for (int i = 0; i < instances->length(); i++) {
Handle<v8::internal::Script> script = Handle<v8::internal::Script>(
v8::internal::Script::cast(instances->get(i)));
v8::internal::Script::InitLineEnds(script);
v8::internal::FixedArray* ends =
v8::internal::FixedArray::cast(script->line_ends());
CHECK_GT(ends->length(), 0);
int prev_end = -1;
for (int j = 0; j < ends->length(); j++) {
const int curr_end = v8::internal::Smi::cast(ends->get(j))->value();
CHECK_GT(curr_end, prev_end);
prev_end = curr_end;
}
}
}
// Test script break points set on lines.
TEST(ScriptNameAndData) {
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
env.ExposeDebug();
// Create functions for retrieving script name and data for the function on
// the top frame when hitting a break point.
frame_script_name = CompileFunction(&env,
frame_script_name_source,
"frame_script_name");
v8::Debug::SetDebugEventListener(env->GetIsolate(),
DebugEventBreakPointHitCount);
v8::Local<v8::Context> context = env.context();
// Test function source.
v8::Local<v8::String> script = v8_str(env->GetIsolate(),
"function f() {\n"
" debugger;\n"
"}\n");
v8::ScriptOrigin origin1 =
v8::ScriptOrigin(v8_str(env->GetIsolate(), "name"));
v8::Local<v8::Script> script1 =
v8::Script::Compile(context, script, &origin1).ToLocalChecked();
script1->Run(context).ToLocalChecked();
v8::Local<v8::Function> f;
f = v8::Local<v8::Function>::Cast(
env->Global()
->Get(context, v8_str(env->GetIsolate(), "f"))
.ToLocalChecked());
f->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(1, break_point_hit_count);
CHECK_EQ(0, strcmp("name", last_script_name_hit));
// Compile the same script again without setting data. As the compilation
// cache is disabled when debugging expect the data to be missing.
v8::Script::Compile(context, script, &origin1)
.ToLocalChecked()
->Run(context)
.ToLocalChecked();
f = v8::Local<v8::Function>::Cast(
env->Global()
->Get(context, v8_str(env->GetIsolate(), "f"))
.ToLocalChecked());
f->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(2, break_point_hit_count);
CHECK_EQ(0, strcmp("name", last_script_name_hit));
v8::Local<v8::String> data_obj_source =
v8_str(env->GetIsolate(),
"({ a: 'abc',\n"
" b: 123,\n"
" toString: function() { return this.a + ' ' + this.b; }\n"
"})\n");
v8::Script::Compile(context, data_obj_source)
.ToLocalChecked()
->Run(context)
.ToLocalChecked();
v8::ScriptOrigin origin2 =
v8::ScriptOrigin(v8_str(env->GetIsolate(), "new name"));
v8::Local<v8::Script> script2 =
v8::Script::Compile(context, script, &origin2).ToLocalChecked();
script2->Run(context).ToLocalChecked();
f = v8::Local<v8::Function>::Cast(
env->Global()
->Get(context, v8_str(env->GetIsolate(), "f"))
.ToLocalChecked());
f->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(3, break_point_hit_count);
CHECK_EQ(0, strcmp("new name", last_script_name_hit));
v8::Local<v8::Script> script3 =
v8::Script::Compile(context, script, &origin2).ToLocalChecked();
script3->Run(context).ToLocalChecked();
f = v8::Local<v8::Function>::Cast(
env->Global()
->Get(context, v8_str(env->GetIsolate(), "f"))
.ToLocalChecked());
f->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(4, break_point_hit_count);
}
static v8::Local<v8::Context> expected_context;
static v8::Local<v8::Value> expected_context_data;
// Check that the expected context is the one generating the debug event.
static void ContextCheckEventListener(
const v8::Debug::EventDetails& event_details) {
CHECK(event_details.GetEventContext() == expected_context);
CHECK(event_details.GetEventContext()->GetEmbedderData(0)->StrictEquals(
expected_context_data));
event_listener_hit_count++;
}
// Test which creates two contexts and sets different embedder data on each.
// Checks that this data is set correctly and that when the debug event
// listener is called the expected context is the one active.
TEST(ContextData) {
v8::Isolate* isolate = CcTest::isolate();
v8::HandleScope scope(isolate);
// Create two contexts.
v8::Local<v8::Context> context_1;
v8::Local<v8::Context> context_2;
v8::Local<v8::ObjectTemplate> global_template =
v8::Local<v8::ObjectTemplate>();
v8::Local<v8::Value> global_object = v8::Local<v8::Value>();
context_1 = v8::Context::New(isolate, NULL, global_template, global_object);
context_2 = v8::Context::New(isolate, NULL, global_template, global_object);
v8::Debug::SetDebugEventListener(isolate, ContextCheckEventListener);
// Default data value is undefined.
CHECK(context_1->GetEmbedderData(0)->IsUndefined());
CHECK(context_2->GetEmbedderData(0)->IsUndefined());
// Set and check different data values.
v8::Local<v8::String> data_1 = v8_str(isolate, "1");
v8::Local<v8::String> data_2 = v8_str(isolate, "2");
context_1->SetEmbedderData(0, data_1);
context_2->SetEmbedderData(0, data_2);
CHECK(context_1->GetEmbedderData(0)->StrictEquals(data_1));
CHECK(context_2->GetEmbedderData(0)->StrictEquals(data_2));
// Simple test function which causes a break.
const char* source = "function f() { debugger; }";
// Enter and run function in the first context.
{
v8::Context::Scope context_scope(context_1);
expected_context = context_1;
expected_context_data = data_1;
v8::Local<v8::Function> f = CompileFunction(isolate, source, "f");
f->Call(context_1, context_1->Global(), 0, NULL).ToLocalChecked();
}
// Enter and run function in the second context.
{
v8::Context::Scope context_scope(context_2);
expected_context = context_2;
expected_context_data = data_2;
v8::Local<v8::Function> f = CompileFunction(isolate, source, "f");
f->Call(context_2, context_2->Global(), 0, NULL).ToLocalChecked();
}
// Two times compile event and two times break event.
CHECK_GT(event_listener_hit_count, 3);
v8::Debug::SetDebugEventListener(isolate, nullptr);
CheckDebuggerUnloaded(isolate);
}
// Debug event listener which issues a debug break when it hits a break event.
static int event_listener_break_hit_count = 0;
static void DebugBreakEventListener(const v8::Debug::EventDetails& details) {
// Schedule a debug break for break events.
if (details.GetEvent() == v8::Break) {
event_listener_break_hit_count++;
if (event_listener_break_hit_count == 1) {
v8::Debug::DebugBreak(details.GetIsolate());
}
}
}
// Test that a debug break can be scheduled while in a event listener.
TEST(DebugBreakInEventListener) {
i::FLAG_turbo_inlining = false; // Make sure g is not inlined into f.
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugBreakEventListener);
v8::Local<v8::Context> context = env.context();
// Test functions.
const char* script = "function f() { debugger; g(); } function g() { }";
CompileRun(script);
v8::Local<v8::Function> f = v8::Local<v8::Function>::Cast(
env->Global()
->Get(context, v8_str(env->GetIsolate(), "f"))
.ToLocalChecked());
v8::Local<v8::Function> g = v8::Local<v8::Function>::Cast(
env->Global()
->Get(context, v8_str(env->GetIsolate(), "g"))
.ToLocalChecked());
// Call f then g. The debugger statement in f will cause a break which will
// cause another break.
f->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(2, event_listener_break_hit_count);
// Calling g will not cause any additional breaks.
g->Call(context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(2, event_listener_break_hit_count);
}
#ifndef V8_INTERPRETED_REGEXP
// Debug event handler which gets the function on the top frame and schedules a
// break a number of times.
static void DebugEventDebugBreak(
const v8::Debug::EventDetails& event_details) {
v8::DebugEvent event = event_details.GetEvent();
v8::Local<v8::Object> exec_state = event_details.GetExecutionState();
v8::Local<v8::Context> context = CcTest::isolate()->GetCurrentContext();
if (event == v8::Break) {
break_point_hit_count++;
// Get the name of the top frame function.
if (!frame_function_name.IsEmpty()) {
// Get the name of the function.
const int argc = 2;
v8::Local<v8::Value> argv[argc] = {
exec_state, v8::Integer::New(CcTest::isolate(), 0)};
v8::Local<v8::Value> result =
frame_function_name->Call(context, exec_state, argc, argv)
.ToLocalChecked();
if (result->IsUndefined()) {
last_function_hit[0] = '\0';
} else {
CHECK(result->IsString());
v8::Local<v8::String> function_name(
result->ToString(context).ToLocalChecked());
function_name->WriteUtf8(last_function_hit);
}
}
// Keep forcing breaks.
if (break_point_hit_count < 20) {
v8::Debug::DebugBreak(CcTest::isolate());
}
}
}
TEST(RegExpDebugBreak) {
// This test only applies to native regexps.
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
v8::Local<v8::Context> context = env.context();
// Create a function for checking the function when hitting a break point.
frame_function_name = CompileFunction(&env,
frame_function_name_source,
"frame_function_name");
// Test RegExp which matches white spaces and comments at the begining of a
// source line.
const char* script =
"var sourceLineBeginningSkip = /^(?:[ \\v\\h]*(?:\\/\\*.*?\\*\\/)*)*/;\n"
"function f(s) { return s.match(sourceLineBeginningSkip)[0].length; }";
v8::Local<v8::Function> f = CompileFunction(env->GetIsolate(), script, "f");
const int argc = 1;
v8::Local<v8::Value> argv[argc] = {
v8_str(env->GetIsolate(), " /* xxx */ a=0;")};
v8::Local<v8::Value> result =
f->Call(context, env->Global(), argc, argv).ToLocalChecked();
CHECK_EQ(12, result->Int32Value(context).FromJust());
v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventDebugBreak);
v8::Debug::DebugBreak(env->GetIsolate());
result = f->Call(context, env->Global(), argc, argv).ToLocalChecked();
// Check that there was only one break event. Matching RegExp should not
// cause Break events.
CHECK_EQ(1, break_point_hit_count);
CHECK_EQ(0, strcmp("f", last_function_hit));
}
#endif // V8_INTERPRETED_REGEXP
// Test which creates a context and sets embedder data on it. Checks that this
// data is set correctly and that when the debug event listener is called for
// break event in an eval statement the expected context is the one returned by
// Message.GetEventContext.
TEST(EvalContextData) {
v8::HandleScope scope(CcTest::isolate());
v8::Local<v8::Context> context_1;
v8::Local<v8::ObjectTemplate> global_template =
v8::Local<v8::ObjectTemplate>();
context_1 =
v8::Context::New(CcTest::isolate(), NULL, global_template);
v8::Debug::SetDebugEventListener(CcTest::isolate(),
ContextCheckEventListener);
// Default data value is undefined.
CHECK(context_1->GetEmbedderData(0)->IsUndefined());
// Set and check a data value.
v8::Local<v8::String> data_1 = v8_str(CcTest::isolate(), "1");
context_1->SetEmbedderData(0, data_1);
CHECK(context_1->GetEmbedderData(0)->StrictEquals(data_1));
// Simple test function with eval that causes a break.
const char* source = "function f() { eval('debugger;'); }";
// Enter and run function in the context.
{
v8::Context::Scope context_scope(context_1);
expected_context = context_1;
expected_context_data = data_1;
v8::Local<v8::Function> f = CompileFunction(CcTest::isolate(), source, "f");
f->Call(context_1, context_1->Global(), 0, NULL).ToLocalChecked();
}
v8::Debug::SetDebugEventListener(CcTest::isolate(), nullptr);
// One time compile event and one time break event.
CHECK_GT(event_listener_hit_count, 2);
CheckDebuggerUnloaded(CcTest::isolate());
}
// Debug event listener which counts the after compile events.
int after_compile_event_count = 0;
static void AfterCompileEventListener(const v8::Debug::EventDetails& details) {
// Count the number of scripts collected.
if (details.GetEvent() == v8::AfterCompile) {
after_compile_event_count++;
}
}
// Tests that after compile event is sent as many times as there are scripts
// compiled.
TEST(AfterCompileEventWhenEventListenerIsReset) {
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
v8::Local<v8::Context> context = env.context();
const char* script = "var a=1";
v8::Debug::SetDebugEventListener(env->GetIsolate(),
AfterCompileEventListener);
v8::Script::Compile(context, v8_str(env->GetIsolate(), script))
.ToLocalChecked()
->Run(context)
.ToLocalChecked();
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
v8::Debug::SetDebugEventListener(env->GetIsolate(),
AfterCompileEventListener);
v8::Debug::DebugBreak(env->GetIsolate());
v8::Script::Compile(context, v8_str(env->GetIsolate(), script))
.ToLocalChecked()
->Run(context)
.ToLocalChecked();
// Setting listener to NULL should cause debugger unload.
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
CheckDebuggerUnloaded(env->GetIsolate());
// Compilation cache should be disabled when debugger is active.
CHECK_EQ(2, after_compile_event_count);
}
// Syntax error event handler which counts a number of events.
int compile_error_event_count = 0;
static void CompileErrorEventCounterClear() {
compile_error_event_count = 0;
}
static void CompileErrorEventCounter(
const v8::Debug::EventDetails& event_details) {
v8::DebugEvent event = event_details.GetEvent();
if (event == v8::CompileError) {
compile_error_event_count++;
}
}
// Tests that syntax error event is sent as many times as there are scripts
// with syntax error compiled.
TEST(SyntaxErrorEventOnSyntaxException) {
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
// For this test, we want to break on uncaught exceptions:
ChangeBreakOnException(false, true);
v8::Debug::SetDebugEventListener(env->GetIsolate(), CompileErrorEventCounter);
v8::Local<v8::Context> context = env.context();
CompileErrorEventCounterClear();
// Check initial state.
CHECK_EQ(0, compile_error_event_count);
// Throws SyntaxError: Unexpected end of input
CHECK(
v8::Script::Compile(context, v8_str(env->GetIsolate(), "+++")).IsEmpty());
CHECK_EQ(1, compile_error_event_count);
CHECK(v8::Script::Compile(context, v8_str(env->GetIsolate(), "/sel\\/: \\"))
.IsEmpty());
CHECK_EQ(2, compile_error_event_count);
v8::Local<v8::Script> script =
v8::Script::Compile(context,
v8_str(env->GetIsolate(), "JSON.parse('1234:')"))
.ToLocalChecked();
CHECK_EQ(2, compile_error_event_count);
CHECK(script->Run(context).IsEmpty());
CHECK_EQ(3, compile_error_event_count);
v8::Script::Compile(context,
v8_str(env->GetIsolate(), "new RegExp('/\\/\\\\');"))
.ToLocalChecked();
CHECK_EQ(3, compile_error_event_count);
v8::Script::Compile(context, v8_str(env->GetIsolate(), "throw 1;"))
.ToLocalChecked();
CHECK_EQ(3, compile_error_event_count);
}
// Tests that break event is sent when event listener is reset.
TEST(BreakEventWhenEventListenerIsReset) {
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
v8::Local<v8::Context> context = env.context();
const char* script = "function f() {};";
v8::Debug::SetDebugEventListener(env->GetIsolate(),
AfterCompileEventListener);
v8::Script::Compile(context, v8_str(env->GetIsolate(), script))
.ToLocalChecked()
->Run(context)
.ToLocalChecked();
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
v8::Debug::SetDebugEventListener(env->GetIsolate(),
AfterCompileEventListener);
v8::Debug::DebugBreak(env->GetIsolate());
v8::Local<v8::Function> f = v8::Local<v8::Function>::Cast(
env->Global()
->Get(context, v8_str(env->GetIsolate(), "f"))
.ToLocalChecked());
f->Call(context, env->Global(), 0, NULL).ToLocalChecked();
// Setting event listener to NULL should cause debugger unload.
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
CheckDebuggerUnloaded(env->GetIsolate());
// Compilation cache should be disabled when debugger is active.
CHECK_EQ(1, after_compile_event_count);
}
static int exception_event_count = 0;
static void ExceptionEventListener(const v8::Debug::EventDetails& details) {
if (details.GetEvent() == v8::Exception) exception_event_count++;
}
// Tests that exception event is sent when event listener is reset.
TEST(ExceptionEventWhenEventListenerIsReset) {
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
v8::Local<v8::Context> context = env.context();
// For this test, we want to break on uncaught exceptions:
ChangeBreakOnException(false, true);
exception_event_count = 0;
const char* script = "function f() {throw new Error()};";
v8::Debug::SetDebugEventListener(env->GetIsolate(),
AfterCompileEventListener);
v8::Script::Compile(context, v8_str(env->GetIsolate(), script))
.ToLocalChecked()
->Run(context)
.ToLocalChecked();
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
v8::Debug::SetDebugEventListener(env->GetIsolate(), ExceptionEventListener);
v8::Local<v8::Function> f = v8::Local<v8::Function>::Cast(
env->Global()
->Get(context, v8_str(env->GetIsolate(), "f"))
.ToLocalChecked());
CHECK(f->Call(context, env->Global(), 0, NULL).IsEmpty());
// Setting event listener to NULL should cause debugger unload.
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
CheckDebuggerUnloaded(env->GetIsolate());
CHECK_EQ(1, exception_event_count);
}
// Tests after compile event is sent when there are some provisional
// breakpoints out of the scripts lines range.
TEST(ProvisionalBreakpointOnLineOutOfRange) {
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
env.ExposeDebug();
const char* script = "function f() {};";
const char* resource_name = "test_resource";
v8::Debug::SetDebugEventListener(env->GetIsolate(),
AfterCompileEventListener);
v8::Local<v8::Context> context = env.context();
// Set a couple of provisional breakpoint on lines out of the script lines
// range.
int sbp1 = SetScriptBreakPointByNameFromJS(env->GetIsolate(), resource_name,
3, -1 /* no column */);
int sbp2 =
SetScriptBreakPointByNameFromJS(env->GetIsolate(), resource_name, 5, 5);
after_compile_event_count = 0;
v8::ScriptOrigin origin(v8_str(env->GetIsolate(), resource_name),
v8::Integer::New(env->GetIsolate(), 10),
v8::Integer::New(env->GetIsolate(), 1));
// Compile a script whose first line number is greater than the breakpoints'
// lines.
v8::Script::Compile(context, v8_str(env->GetIsolate(), script), &origin)
.ToLocalChecked()
->Run(context)
.ToLocalChecked();
// If the script is compiled successfully there is exactly one after compile
// event. In case of an exception in debugger code after compile event is not
// sent.
CHECK_EQ(1, after_compile_event_count);
ClearBreakPointFromJS(env->GetIsolate(), sbp1);
ClearBreakPointFromJS(env->GetIsolate(), sbp2);
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
CheckDebuggerUnloaded(env->GetIsolate());
}
static void BreakEventListener(const v8::Debug::EventDetails& details) {
if (details.GetEvent() == v8::Break) break_point_hit_count++;
}
// Test that if DebugBreak is forced it is ignored when code from
// debug-delay.js is executed.
TEST(NoDebugBreakInAfterCompileEventListener) {
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
v8::Local<v8::Context> context = env.context();
// Register a debug event listener which sets the break flag and counts.
v8::Debug::SetDebugEventListener(env->GetIsolate(), BreakEventListener);
// Set the debug break flag.
v8::Debug::DebugBreak(env->GetIsolate());
// Create a function for testing stepping.
const char* src = "function f() { eval('var x = 10;'); } ";
v8::Local<v8::Function> f = CompileFunction(&env, src, "f");
// There should be only one break event.
CHECK_EQ(1, break_point_hit_count);
// Set the debug break flag again.
v8::Debug::DebugBreak(env->GetIsolate());
f->Call(context, env->Global(), 0, NULL).ToLocalChecked();
// There should be one more break event when the script is evaluated in 'f'.
CHECK_EQ(2, break_point_hit_count);
// Get rid of the debug event listener.
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
CheckDebuggerUnloaded(env->GetIsolate());
}
// Test that the debug break flag works with function.apply.
TEST(DebugBreakFunctionApply) {
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
v8::Local<v8::Context> context = env.context();
// Create a function for testing breaking in apply.
v8::Local<v8::Function> foo = CompileFunction(
&env,
"function baz(x) { }"
"function bar(x) { baz(); }"
"function foo(){ bar.apply(this, [1]); }",
"foo");
// Register a debug event listener which steps and counts.
v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventBreakMax);
// Set the debug break flag before calling the code using function.apply.
v8::Debug::DebugBreak(env->GetIsolate());
// Limit the number of debug breaks. This is a regression test for issue 493
// where this test would enter an infinite loop.
break_point_hit_count = 0;
max_break_point_hit_count = 10000; // 10000 => infinite loop.
foo->Call(context, env->Global(), 0, NULL).ToLocalChecked();
// When keeping the debug break several break will happen.
CHECK_GT(break_point_hit_count, 1);
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
CheckDebuggerUnloaded(env->GetIsolate());
}
v8::Local<v8::Context> debugee_context;
v8::Local<v8::Context> debugger_context;
// Property getter that checks that current and calling contexts
// are both the debugee contexts.
static void NamedGetterWithCallingContextCheck(
v8::Local<v8::String> name,
const v8::PropertyCallbackInfo<v8::Value>& info) {
CHECK_EQ(0, strcmp(*v8::String::Utf8Value(name), "a"));
v8::Local<v8::Context> current = info.GetIsolate()->GetCurrentContext();
CHECK(current == debugee_context);
CHECK(current != debugger_context);
info.GetReturnValue().Set(1);
}
// Debug event listener that checks if the first argument of a function is
// an object with property 'a' == 1. If the property has custom accessor
// this handler will eventually invoke it.
static void DebugEventGetAtgumentPropertyValue(
const v8::Debug::EventDetails& event_details) {
v8::DebugEvent event = event_details.GetEvent();
v8::Local<v8::Object> exec_state = event_details.GetExecutionState();
if (event == v8::Break) {
break_point_hit_count++;
CHECK(debugger_context == CcTest::isolate()->GetCurrentContext());
v8::Local<v8::Function> func = v8::Local<v8::Function>::Cast(CompileRun(
"(function(exec_state) {\n"
" return (exec_state.frame(0).argumentValue(0).property('a').\n"
" value().value() == 1);\n"
"})"));
const int argc = 1;
v8::Local<v8::Value> argv[argc] = {exec_state};
v8::Local<v8::Value> result =
func->Call(debugger_context, exec_state, argc, argv).ToLocalChecked();
CHECK(result->IsTrue());
}
}
TEST(CallingContextIsNotDebugContext) {
v8::internal::Debug* debug = CcTest::i_isolate()->debug();
// Create and enter a debugee context.
DebugLocalContext env;
v8::Isolate* isolate = env->GetIsolate();
v8::HandleScope scope(isolate);
env.ExposeDebug();
// Save handles to the debugger and debugee contexts to be used in
// NamedGetterWithCallingContextCheck.
debugee_context = env.context();
debugger_context = v8::Utils::ToLocal(debug->debug_context());
// Create object with 'a' property accessor.
v8::Local<v8::ObjectTemplate> named = v8::ObjectTemplate::New(isolate);
named->SetAccessor(v8_str(isolate, "a"), NamedGetterWithCallingContextCheck);
CHECK(env->Global()
->Set(debugee_context, v8_str(isolate, "obj"),
named->NewInstance(debugee_context).ToLocalChecked())
.FromJust());
// Register the debug event listener
v8::Debug::SetDebugEventListener(isolate, DebugEventGetAtgumentPropertyValue);
// Create a function that invokes debugger.
v8::Local<v8::Function> foo = CompileFunction(
&env,
"function bar(x) { debugger; }"
"function foo(){ bar(obj); }",
"foo");
break_point_hit_count = 0;
foo->Call(debugee_context, env->Global(), 0, NULL).ToLocalChecked();
CHECK_EQ(1, break_point_hit_count);
v8::Debug::SetDebugEventListener(isolate, nullptr);
debugee_context = v8::Local<v8::Context>();
debugger_context = v8::Local<v8::Context>();
CheckDebuggerUnloaded(isolate);
}
static v8::Local<v8::Value> expected_callback_data;
static void DebugEventContextChecker(const v8::Debug::EventDetails& details) {
CHECK(details.GetEventContext() == expected_context);
CHECK(expected_callback_data->Equals(details.GetEventContext(),
details.GetCallbackData())
.FromJust());
}
// Check that event details contain context where debug event occured.
TEST(DebugEventContext) {
v8::Isolate* isolate = CcTest::isolate();
v8::HandleScope scope(isolate);
expected_context = v8::Context::New(isolate);
expected_callback_data = v8::Int32::New(isolate, 2010);
v8::Debug::SetDebugEventListener(isolate, DebugEventContextChecker,
expected_callback_data);
v8::Context::Scope context_scope(expected_context);
v8::Script::Compile(expected_context,
v8_str(isolate, "(function(){debugger;})();"))
.ToLocalChecked()
->Run(expected_context)
.ToLocalChecked();
expected_context.Clear();
v8::Debug::SetDebugEventListener(isolate, nullptr);
expected_context_data = v8::Local<v8::Value>();
CheckDebuggerUnloaded(isolate);
}
static bool debug_event_break_deoptimize_done = false;
static void DebugEventBreakDeoptimize(
const v8::Debug::EventDetails& event_details) {
v8::DebugEvent event = event_details.GetEvent();
v8::Local<v8::Object> exec_state = event_details.GetExecutionState();
v8::Local<v8::Context> context = CcTest::isolate()->GetCurrentContext();
if (event == v8::Break) {
if (!frame_function_name.IsEmpty()) {
// Get the name of the function.
const int argc = 2;
v8::Local<v8::Value> argv[argc] = {
exec_state, v8::Integer::New(CcTest::isolate(), 0)};
v8::Local<v8::Value> result =
frame_function_name->Call(context, exec_state, argc, argv)
.ToLocalChecked();
if (!result->IsUndefined()) {
char fn[80];
CHECK(result->IsString());
v8::Local<v8::String> function_name(
result->ToString(context).ToLocalChecked());
function_name->WriteUtf8(fn);
if (strcmp(fn, "bar") == 0) {
i::Deoptimizer::DeoptimizeAll(CcTest::i_isolate());
debug_event_break_deoptimize_done = true;
}
}
}
v8::Debug::DebugBreak(CcTest::isolate());
}
}
// Test deoptimization when execution is broken using the debug break stack
// check interrupt.
TEST(DeoptimizeDuringDebugBreak) {
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
env.ExposeDebug();
v8::Local<v8::Context> context = env.context();
// Create a function for checking the function when hitting a break point.
frame_function_name = CompileFunction(&env,
frame_function_name_source,
"frame_function_name");
// Set a debug event listener which will keep interrupting execution until
// debug break. When inside function bar it will deoptimize all functions.
// This tests lazy deoptimization bailout for the stack check, as the first
// time in function bar when using debug break and no break points will be at
// the initial stack check.
v8::Debug::SetDebugEventListener(env->GetIsolate(),
DebugEventBreakDeoptimize);
// Compile and run function bar which will optimize it for some flag settings.
v8::Local<v8::Function> f = CompileFunction(&env, "function bar(){}", "bar");
f->Call(context, v8::Undefined(env->GetIsolate()), 0, NULL).ToLocalChecked();
// Set debug break and call bar again.
v8::Debug::DebugBreak(env->GetIsolate());
f->Call(context, v8::Undefined(env->GetIsolate()), 0, NULL).ToLocalChecked();
CHECK(debug_event_break_deoptimize_done);
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
}
static void DebugEventBreakWithOptimizedStack(
const v8::Debug::EventDetails& event_details) {
v8::Isolate* isolate = event_details.GetEventContext()->GetIsolate();
v8::DebugEvent event = event_details.GetEvent();
v8::Local<v8::Object> exec_state = event_details.GetExecutionState();
v8::Local<v8::Context> context = isolate->GetCurrentContext();
if (event == v8::Break) {
if (!frame_function_name.IsEmpty()) {
for (int i = 0; i < 2; i++) {
const int argc = 2;
v8::Local<v8::Value> argv[argc] = {exec_state,
v8::Integer::New(isolate, i)};
// Get the name of the function in frame i.
v8::Local<v8::Value> result =
frame_function_name->Call(context, exec_state, argc, argv)
.ToLocalChecked();
CHECK(result->IsString());
v8::Local<v8::String> function_name(
result->ToString(context).ToLocalChecked());
CHECK(
function_name->Equals(context, v8_str(isolate, "loop")).FromJust());
// Get the name of the first argument in frame i.
result = frame_argument_name->Call(context, exec_state, argc, argv)
.ToLocalChecked();
CHECK(result->IsString());
v8::Local<v8::String> argument_name(
result->ToString(context).ToLocalChecked());
CHECK(argument_name->Equals(context, v8_str(isolate, "count"))
.FromJust());
// Get the value of the first argument in frame i. If the
// function is optimized the value will be undefined, otherwise
// the value will be '1 - i'.
//
// TODO(3141533): We should be able to get the real value for
// optimized frames.
result = frame_argument_value->Call(context, exec_state, argc, argv)
.ToLocalChecked();
CHECK(result->IsUndefined() ||
(result->Int32Value(context).FromJust() == 1 - i));
// Get the name of the first local variable.
result = frame_local_name->Call(context, exec_state, argc, argv)
.ToLocalChecked();
CHECK(result->IsString());
v8::Local<v8::String> local_name(
result->ToString(context).ToLocalChecked());
CHECK(local_name->Equals(context, v8_str(isolate, "local")).FromJust());
// Get the value of the first local variable. If the function
// is optimized the value will be undefined, otherwise it will
// be 42.
//
// TODO(3141533): We should be able to get the real value for
// optimized frames.
result = frame_local_value->Call(context, exec_state, argc, argv)
.ToLocalChecked();
CHECK(result->IsUndefined() ||
(result->Int32Value(context).FromJust() == 42));
}
}
}
}
static void ScheduleBreak(const v8::FunctionCallbackInfo<v8::Value>& args) {
v8::Debug::SetDebugEventListener(args.GetIsolate(),
DebugEventBreakWithOptimizedStack);
v8::Debug::DebugBreak(args.GetIsolate());
}
TEST(DebugBreakStackInspection) {
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
v8::Local<v8::Context> context = env.context();
frame_function_name =
CompileFunction(&env, frame_function_name_source, "frame_function_name");
frame_argument_name =
CompileFunction(&env, frame_argument_name_source, "frame_argument_name");
frame_argument_value = CompileFunction(&env,
frame_argument_value_source,
"frame_argument_value");
frame_local_name =
CompileFunction(&env, frame_local_name_source, "frame_local_name");
frame_local_value =
CompileFunction(&env, frame_local_value_source, "frame_local_value");
v8::Local<v8::FunctionTemplate> schedule_break_template =
v8::FunctionTemplate::New(env->GetIsolate(), ScheduleBreak);
v8::Local<v8::Function> schedule_break =
schedule_break_template->GetFunction(context).ToLocalChecked();
CHECK(env->Global()
->Set(context, v8_str("scheduleBreak"), schedule_break)
.FromJust());
const char* src =
"function loop(count) {"
" var local = 42;"
" if (count < 1) { scheduleBreak(); loop(count + 1); }"
"}"
"loop(0);";
v8::Script::Compile(context, v8_str(env->GetIsolate(), src))
.ToLocalChecked()
->Run(context)
.ToLocalChecked();
}
// Test that setting the terminate execution flag during debug break processing.
static void TestDebugBreakInLoop(const char* loop_head,
const char** loop_bodies,
const char* loop_tail) {
// Receive 10 breaks for each test and then terminate JavaScript execution.
static const int kBreaksPerTest = 10;
for (int i = 0; loop_bodies[i] != NULL; i++) {
// Perform a lazy deoptimization after various numbers of breaks
// have been hit.
EmbeddedVector<char, 1024> buffer;
SNPrintF(buffer, "function f() {%s%s%s}", loop_head, loop_bodies[i],
loop_tail);
i::PrintF("%s\n", buffer.start());
for (int j = 0; j < 3; j++) {
break_point_hit_count_deoptimize = j;
if (j == 2) {
break_point_hit_count_deoptimize = kBreaksPerTest;
}
break_point_hit_count = 0;
max_break_point_hit_count = kBreaksPerTest;
terminate_after_max_break_point_hit = true;
// Function with infinite loop.
CompileRun(buffer.start());
// Set the debug break to enter the debugger as soon as possible.
v8::Debug::DebugBreak(CcTest::isolate());
// Call function with infinite loop.
CompileRun("f();");
CHECK_EQ(kBreaksPerTest, break_point_hit_count);
CHECK(!CcTest::isolate()->IsExecutionTerminating());
}
}
}
static const char* loop_bodies_1[] = {"",
"g()",
"if (a == 0) { g() }",
"if (a == 1) { g() }",
"if (a == 0) { g() } else { h() }",
"if (a == 0) { continue }",
NULL};
static const char* loop_bodies_2[] = {
"if (a == 1) { continue }",
"switch (a) { case 1: g(); }",
"switch (a) { case 1: continue; }",
"switch (a) { case 1: g(); break; default: h() }",
"switch (a) { case 1: continue; break; default: h() }",
NULL};
void DebugBreakLoop(const char* loop_header, const char** loop_bodies,
const char* loop_footer) {
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
// Register a debug event listener which sets the break flag and counts.
v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventBreakMax);
CompileRun(
"var a = 1;\n"
"function g() { }\n"
"function h() { }");
TestDebugBreakInLoop(loop_header, loop_bodies, loop_footer);
// Get rid of the debug event listener.
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
CheckDebuggerUnloaded(env->GetIsolate());
}
TEST(DebugBreakInWhileTrue1) {
DebugBreakLoop("while (true) {", loop_bodies_1, "}");
}
TEST(DebugBreakInWhileTrue2) {
DebugBreakLoop("while (true) {", loop_bodies_2, "}");
}
TEST(DebugBreakInWhileCondition1) {
DebugBreakLoop("while (a == 1) {", loop_bodies_1, "}");
}
TEST(DebugBreakInWhileCondition2) {
DebugBreakLoop("while (a == 1) {", loop_bodies_2, "}");
}
TEST(DebugBreakInDoWhileTrue1) {
DebugBreakLoop("do {", loop_bodies_1, "} while (true)");
}
TEST(DebugBreakInDoWhileTrue2) {
DebugBreakLoop("do {", loop_bodies_2, "} while (true)");
}
TEST(DebugBreakInDoWhileCondition1) {
DebugBreakLoop("do {", loop_bodies_1, "} while (a == 1)");
}
TEST(DebugBreakInDoWhileCondition2) {
DebugBreakLoop("do {", loop_bodies_2, "} while (a == 1)");
}
TEST(DebugBreakInFor1) { DebugBreakLoop("for (;;) {", loop_bodies_1, "}"); }
TEST(DebugBreakInFor2) { DebugBreakLoop("for (;;) {", loop_bodies_2, "}"); }
TEST(DebugBreakInForCondition1) {
DebugBreakLoop("for (;a == 1;) {", loop_bodies_1, "}");
}
TEST(DebugBreakInForCondition2) {
DebugBreakLoop("for (;a == 1;) {", loop_bodies_2, "}");
}
v8::Local<v8::Script> inline_script;
static void DebugBreakInlineListener(
const v8::Debug::EventDetails& event_details) {
v8::DebugEvent event = event_details.GetEvent();
v8::Local<v8::Context> context = CcTest::isolate()->GetCurrentContext();
if (event != v8::Break) return;
int expected_frame_count = 4;
int expected_line_number[] = {1, 4, 7, 12};
i::Handle<i::Object> compiled_script = v8::Utils::OpenHandle(*inline_script);
i::Handle<i::Script> source_script = i::Handle<i::Script>(i::Script::cast(
i::JSFunction::cast(*compiled_script)->shared()->script()));
int break_id = CcTest::i_isolate()->debug()->break_id();
char script[128];
i::Vector<char> script_vector(script, sizeof(script));
SNPrintF(script_vector, "%%GetFrameCount(%d)", break_id);
v8::Local<v8::Value> result = CompileRun(script);
int frame_count = result->Int32Value(context).FromJust();
CHECK_EQ(expected_frame_count, frame_count);
for (int i = 0; i < frame_count; i++) {
// The 6. element in the returned array of GetFrameDetails contains the
// source position of that frame.
SNPrintF(script_vector, "%%GetFrameDetails(%d, %d)[6]", break_id, i);
v8::Local<v8::Value> result = CompileRun(script);
CHECK_EQ(expected_line_number[i],
i::Script::GetLineNumber(source_script,
result->Int32Value(context).FromJust()));
}
v8::Debug::SetDebugEventListener(CcTest::isolate(), nullptr);
CcTest::isolate()->TerminateExecution();
}
TEST(DebugBreakInline) {
i::FLAG_allow_natives_syntax = true;
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
v8::Local<v8::Context> context = env.context();
const char* source =
"function debug(b) { \n"
" if (b) debugger; \n"
"} \n"
"function f(b) { \n"
" debug(b) \n"
"}; \n"
"function g(b) { \n"
" f(b); \n"
"}; \n"
"g(false); \n"
"g(false); \n"
"%OptimizeFunctionOnNextCall(g); \n"
"g(true);";
v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugBreakInlineListener);
inline_script =
v8::Script::Compile(context, v8_str(env->GetIsolate(), source))
.ToLocalChecked();
inline_script->Run(context).ToLocalChecked();
}
static void DebugEventStepNext(
const v8::Debug::EventDetails& event_details) {
v8::DebugEvent event = event_details.GetEvent();
if (event == v8::Break) {
PrepareStep(StepNext);
}
}
static void RunScriptInANewCFrame(const char* source) {
v8::TryCatch try_catch(CcTest::isolate());
CompileRun(source);
CHECK(try_catch.HasCaught());
}
TEST(Regress131642) {
// Bug description:
// When doing StepNext through the first script, the debugger is not reset
// after exiting through exception. A flawed implementation enabling the
// debugger to step into Array.prototype.forEach breaks inside the callback
// for forEach in the second script under the assumption that we are in a
// recursive call. In an attempt to step out, we crawl the stack using the
// recorded frame pointer from the first script and fail when not finding it
// on the stack.
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventStepNext);
// We step through the first script. It exits through an exception. We run
// this inside a new frame to record a different FP than the second script
// would expect.
const char* script_1 = "debugger; throw new Error();";
RunScriptInANewCFrame(script_1);
// The second script uses forEach.
const char* script_2 = "[0].forEach(function() { });";
CompileRun(script_2);
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
}
// Import from test-heap.cc
namespace v8 {
namespace internal {
int CountNativeContexts();
}
}
static void NopListener(const v8::Debug::EventDetails& event_details) {
}
TEST(DebuggerCreatesContextIffActive) {
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
CHECK_EQ(1, v8::internal::CountNativeContexts());
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
CompileRun("debugger;");
CHECK_EQ(1, v8::internal::CountNativeContexts());
v8::Debug::SetDebugEventListener(env->GetIsolate(), NopListener);
CompileRun("debugger;");
CHECK_EQ(2, v8::internal::CountNativeContexts());
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
}
TEST(LiveEditEnabled) {
v8::internal::FLAG_allow_natives_syntax = true;
LocalContext env;
v8::HandleScope scope(env->GetIsolate());
v8::Debug::SetLiveEditEnabled(env->GetIsolate(), true);
CompileRun("%LiveEditCompareStrings('', '')");
}
TEST(LiveEditDisabled) {
v8::internal::FLAG_allow_natives_syntax = true;
LocalContext env;
v8::HandleScope scope(env->GetIsolate());
v8::Debug::SetLiveEditEnabled(env->GetIsolate(), false);
CompileRun("%LiveEditCompareStrings('', '')");
}
TEST(PrecompiledFunction) {
// Regression test for crbug.com/346207. If we have preparse data, parsing the
// function in the presence of the debugger (and breakpoints) should still
// succeed. The bug was that preparsing was done lazily and parsing was done
// eagerly, so, the symbol streams didn't match.
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
env.ExposeDebug();
v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugBreakInlineListener);
v8::Local<v8::Function> break_here =
CompileFunction(&env, "function break_here(){}", "break_here");
SetBreakPoint(break_here, 0);
const char* source =
"var a = b = c = 1; \n"
"function this_is_lazy() { \n"
// This symbol won't appear in the preparse data.
" var a; \n"
"} \n"
"function bar() { \n"
" return \"bar\"; \n"
"}; \n"
"a = b = c = 2; \n"
"bar(); \n";
v8::Local<v8::Value> result = ParserCacheCompileRun(source);
CHECK(result->IsString());
v8::String::Utf8Value utf8(result);
CHECK_EQ(0, strcmp("bar", *utf8));
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
CheckDebuggerUnloaded(env->GetIsolate());
}
static void DebugBreakStackTraceListener(
const v8::Debug::EventDetails& event_details) {
v8::StackTrace::CurrentStackTrace(CcTest::isolate(), 10);
}
static void AddDebugBreak(const v8::FunctionCallbackInfo<v8::Value>& args) {
v8::Debug::DebugBreak(args.GetIsolate());
}
TEST(DebugBreakStackTrace) {
DebugLocalContext env;
v8::HandleScope scope(env->GetIsolate());
v8::Debug::SetDebugEventListener(env->GetIsolate(),
DebugBreakStackTraceListener);
v8::Local<v8::Context> context = env.context();
v8::Local<v8::FunctionTemplate> add_debug_break_template =
v8::FunctionTemplate::New(env->GetIsolate(), AddDebugBreak);
v8::Local<v8::Function> add_debug_break =
add_debug_break_template->GetFunction(context).ToLocalChecked();
CHECK(env->Global()
->Set(context, v8_str("add_debug_break"), add_debug_break)
.FromJust());
CompileRun("(function loop() {"
" for (var j = 0; j < 1000; j++) {"
" for (var i = 0; i < 1000; i++) {"
" if (i == 999) add_debug_break();"
" }"
" }"
"})()");
}
v8::base::Semaphore terminate_requested_semaphore(0);
v8::base::Semaphore terminate_fired_semaphore(0);
bool terminate_already_fired = false;
static void DebugBreakTriggerTerminate(
const v8::Debug::EventDetails& event_details) {
if (event_details.GetEvent() != v8::Break || terminate_already_fired) return;
terminate_requested_semaphore.Signal();
// Wait for at most 2 seconds for the terminate request.
CHECK(terminate_fired_semaphore.WaitFor(v8::base::TimeDelta::FromSeconds(2)));
terminate_already_fired = true;
}
class TerminationThread : public v8::base::Thread {
public:
explicit TerminationThread(v8::Isolate* isolate)
: Thread(Options("terminator")), isolate_(isolate) {}
virtual void Run() {
terminate_requested_semaphore.Wait();
isolate_->TerminateExecution();
terminate_fired_semaphore.Signal();
}
private:
v8::Isolate* isolate_;
};
TEST(DebugBreakOffThreadTerminate) {
DebugLocalContext env;
v8::Isolate* isolate = env->GetIsolate();
v8::HandleScope scope(isolate);
v8::Debug::SetDebugEventListener(isolate, DebugBreakTriggerTerminate);
TerminationThread terminator(isolate);
terminator.Start();
v8::TryCatch try_catch(env->GetIsolate());
v8::Debug::DebugBreak(isolate);
CompileRun("while (true);");
CHECK(try_catch.HasTerminated());
}
static void DebugEventExpectNoException(
const v8::Debug::EventDetails& event_details) {
v8::DebugEvent event = event_details.GetEvent();
CHECK_NE(v8::Exception, event);
}
static void TryCatchWrappedThrowCallback(
const v8::FunctionCallbackInfo<v8::Value>& args) {
v8::TryCatch try_catch(args.GetIsolate());
CompileRun("throw 'rejection';");
CHECK(try_catch.HasCaught());
}
TEST(DebugPromiseInterceptedByTryCatch) {
DebugLocalContext env;
v8::Isolate* isolate = env->GetIsolate();
v8::HandleScope scope(isolate);
v8::Debug::SetDebugEventListener(isolate, &DebugEventExpectNoException);
v8::Local<v8::Context> context = env.context();
ChangeBreakOnException(false, true);
v8::Local<v8::FunctionTemplate> fun =
v8::FunctionTemplate::New(isolate, TryCatchWrappedThrowCallback);
CHECK(env->Global()
->Set(context, v8_str("fun"),
fun->GetFunction(context).ToLocalChecked())
.FromJust());
CompileRun("var p = new Promise(function(res, rej) { fun(); res(); });");
CompileRun(
"var r;"
"p.then(function() { r = 'resolved'; },"
" function() { r = 'rejected'; });");
CHECK(CompileRun("r")->Equals(context, v8_str("resolved")).FromJust());
}
static int exception_event_counter = 0;
static void DebugEventCountException(
const v8::Debug::EventDetails& event_details) {
v8::DebugEvent event = event_details.GetEvent();
if (event == v8::Exception) exception_event_counter++;
}
static void ThrowCallback(const v8::FunctionCallbackInfo<v8::Value>& args) {
CompileRun("throw 'rejection';");
}
TEST(DebugPromiseRejectedByCallback) {
DebugLocalContext env;
v8::Isolate* isolate = env->GetIsolate();
v8::HandleScope scope(isolate);
v8::Debug::SetDebugEventListener(isolate, &DebugEventCountException);
v8::Local<v8::Context> context = env.context();
ChangeBreakOnException(false, true);
exception_event_counter = 0;
v8::Local<v8::FunctionTemplate> fun =
v8::FunctionTemplate::New(isolate, ThrowCallback);
CHECK(env->Global()
->Set(context, v8_str("fun"),
fun->GetFunction(context).ToLocalChecked())
.FromJust());
CompileRun("var p = new Promise(function(res, rej) { fun(); res(); });");
CompileRun(
"var r;"
"p.then(function() { r = 'resolved'; },"
" function(e) { r = 'rejected' + e; });");
CHECK(
CompileRun("r")->Equals(context, v8_str("rejectedrejection")).FromJust());
CHECK_EQ(1, exception_event_counter);
}
static void DebugHarmonyScopingListener(
const v8::Debug::EventDetails& event_details) {
v8::DebugEvent event = event_details.GetEvent();
if (event != v8::Break) return;
int break_id = CcTest::i_isolate()->debug()->break_id();
char script[128];
i::Vector<char> script_vector(script, sizeof(script));
SNPrintF(script_vector, "%%GetFrameCount(%d)", break_id);
ExpectInt32(script, 1);
SNPrintF(script_vector, "var frame = new FrameMirror(%d, 0);", break_id);
CompileRun(script);
ExpectInt32("frame.evaluate('x').value_", 1);
ExpectInt32("frame.evaluate('y').value_", 2);
CompileRun("var allScopes = frame.allScopes()");
ExpectInt32("allScopes.length", 2);
ExpectBoolean("allScopes[0].scopeType() === ScopeType.Script", true);
ExpectInt32("allScopes[0].scopeObject().value_.x", 1);
ExpectInt32("allScopes[0].scopeObject().value_.y", 2);
CompileRun("allScopes[0].setVariableValue('x', 5);");
CompileRun("allScopes[0].setVariableValue('y', 6);");
ExpectInt32("frame.evaluate('x + y').value_", 11);
}
TEST(DebugBreakInLexicalScopes) {
i::FLAG_allow_natives_syntax = true;
DebugLocalContext env;
v8::Isolate* isolate = env->GetIsolate();
v8::HandleScope scope(isolate);
v8::Debug::SetDebugEventListener(isolate, DebugHarmonyScopingListener);
CompileRun(
"'use strict'; \n"
"let x = 1; \n");
ExpectInt32(
"'use strict'; \n"
"let y = 2; \n"
"debugger; \n"
"x * y",
30);
ExpectInt32(
"x = 1; y = 2; \n"
"debugger;"
"x * y",
30);
}
static int after_compile_handler_depth = 0;
static void HandleInterrupt(v8::Isolate* isolate, void* data) {
CHECK_EQ(0, after_compile_handler_depth);
}
static void NoInterruptsOnDebugEvent(
const v8::Debug::EventDetails& event_details) {
if (event_details.GetEvent() != v8::AfterCompile) return;
++after_compile_handler_depth;
// Do not allow nested AfterCompile events.
CHECK(after_compile_handler_depth <= 1);
v8::Isolate* isolate = event_details.GetEventContext()->GetIsolate();
isolate->RequestInterrupt(&HandleInterrupt, nullptr);
CompileRun("function foo() {}; foo();");
--after_compile_handler_depth;
}
TEST(NoInterruptsInDebugListener) {
DebugLocalContext env;
v8::Debug::SetDebugEventListener(env->GetIsolate(), NoInterruptsOnDebugEvent);
CompileRun("void(0);");
}
TEST(BreakLocationIterator) {
DebugLocalContext env;
v8::Isolate* isolate = env->GetIsolate();
i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
v8::HandleScope scope(isolate);
v8::Local<v8::Value> result = CompileRun(
"function f() {\n"
" debugger; \n"
" f(); \n"
" debugger; \n"
"} \n"
"f");
Handle<i::Object> function_obj = v8::Utils::OpenHandle(*result);
Handle<i::JSFunction> function = Handle<i::JSFunction>::cast(function_obj);
Handle<i::SharedFunctionInfo> shared(function->shared());
EnableDebugger(isolate);
CHECK(i_isolate->debug()->EnsureDebugInfo(shared, function));
Handle<i::DebugInfo> debug_info(shared->GetDebugInfo());
Handle<i::AbstractCode> abstract_code(shared->abstract_code());
{
auto iterator = i::BreakIterator::GetIterator(debug_info, abstract_code,
i::ALL_BREAK_LOCATIONS);
CHECK(iterator->GetBreakLocation().IsDebuggerStatement());
CHECK_EQ(17, iterator->GetBreakLocation().position());
iterator->Next();
CHECK(iterator->GetBreakLocation().IsDebugBreakSlot());
CHECK_EQ(32, iterator->GetBreakLocation().position());
iterator->Next();
CHECK(iterator->GetBreakLocation().IsCall());
CHECK_EQ(32, iterator->GetBreakLocation().position());
iterator->Next();
CHECK(iterator->GetBreakLocation().IsDebuggerStatement());
CHECK_EQ(47, iterator->GetBreakLocation().position());
iterator->Next();
CHECK(iterator->GetBreakLocation().IsReturn());
CHECK_EQ(60, iterator->GetBreakLocation().position());
iterator->Next();
CHECK(iterator->Done());
}
{
auto iterator = i::BreakIterator::GetIterator(debug_info, abstract_code,
i::CALLS_AND_RETURNS);
CHECK(iterator->GetBreakLocation().IsCall());
CHECK_EQ(32, iterator->GetBreakLocation().position());
iterator->Next();
CHECK(iterator->GetBreakLocation().IsReturn());
CHECK_EQ(60, iterator->GetBreakLocation().position());
iterator->Next();
CHECK(iterator->Done());
}
DisableDebugger(isolate);
}
TEST(DisableTailCallElimination) {
i::FLAG_allow_natives_syntax = true;
i::FLAG_harmony_tailcalls = true;
// TODO(ishell, 4698): Investigate why TurboFan in --always-opt mode makes
// stack[2].getFunctionName() return null.
i::FLAG_turbo_inlining = false;
DebugLocalContext env;
v8::Isolate* isolate = env->GetIsolate();
v8::HandleScope scope(isolate);
CHECK(v8::Debug::IsTailCallEliminationEnabled(isolate));
CompileRun(
"'use strict'; \n"
"Error.prepareStackTrace = (error,stack) => { \n"
" error.strace = stack; \n"
" return error.message + \"\\n at \" + stack.join(\"\\n at \"); \n"
"} \n"
" \n"
"function getCaller() { \n"
" var e = new Error(); \n"
" e.stack; // prepare stack trace \n"
" var stack = e.strace; \n"
" %GlobalPrint('caller: '); \n"
" %GlobalPrint(stack[2].getFunctionName()); \n"
" %GlobalPrint('\\n'); \n"
" return stack[2].getFunctionName(); \n"
"} \n"
"function f() { \n"
" var caller = getCaller(); \n"
" if (caller === 'g') return 1; \n"
" if (caller === 'h') return 2; \n"
" return 0; \n"
"} \n"
"function g() { \n"
" return f(); \n"
"} \n"
"function h() { \n"
" var result = g(); \n"
" return result; \n"
"} \n"
"%NeverOptimizeFunction(getCaller); \n"
"%NeverOptimizeFunction(f); \n"
"%NeverOptimizeFunction(h); \n"
"");
ExpectInt32("h();", 2);
ExpectInt32("h(); %OptimizeFunctionOnNextCall(g); h();", 2);
v8::Debug::SetTailCallEliminationEnabled(isolate, false);
CHECK(!v8::Debug::IsTailCallEliminationEnabled(isolate));
ExpectInt32("h();", 1);
ExpectInt32("h(); %OptimizeFunctionOnNextCall(g); h();", 1);
v8::Debug::SetTailCallEliminationEnabled(isolate, true);
CHECK(v8::Debug::IsTailCallEliminationEnabled(isolate));
ExpectInt32("h();", 2);
ExpectInt32("h(); %OptimizeFunctionOnNextCall(g); h();", 2);
}
TEST(DebugStepNextTailCallEliminiation) {
i::FLAG_allow_natives_syntax = true;
i::FLAG_harmony_tailcalls = true;
// TODO(ishell, 4698): Investigate why TurboFan in --always-opt mode makes
// stack[2].getFunctionName() return null.
i::FLAG_turbo_inlining = false;
DebugLocalContext env;
env.ExposeDebug();
v8::Isolate* isolate = env->GetIsolate();
v8::HandleScope scope(isolate);
CHECK(v8::Debug::IsTailCallEliminationEnabled(isolate));
const char* source =
"'use strict'; \n"
"var Debug = debug.Debug; \n"
"var exception = null; \n"
"var breaks = 0; \n"
"var log = []; \n"
"function f(x) { \n"
" if (x == 2) { \n"
" debugger; // Break a \n"
" } \n"
" if (x-- > 0) { // Break b \n"
" return f(x); // Break c \n"
" } \n"
"} // Break e \n"
"function listener(event, exec_state, event_data, data) {\n"
" if (event != Debug.DebugEvent.Break) return; \n"
" try { \n"
" var line = exec_state.frame(0).sourceLineText(); \n"
" var col = exec_state.frame(0).sourceColumn(); \n"
" var match = line.match(/\\/\\/ Break (\\w)/); \n"
" log.push(match[1] + col); \n"
" exec_state.prepareStep(Debug.StepAction.StepNext); \n"
" } catch (e) { \n"
" exception = e; \n"
" }; \n"
"}; \n"
"Debug.setListener(listener); \n"
"f(4); \n"
"Debug.setListener(null); // Break d \n";
CompileRun(source);
ExpectNull("exception");
ExpectString("JSON.stringify(log)", "[\"a4\",\"b2\",\"c4\",\"c11\",\"d0\"]");
v8::Debug::SetTailCallEliminationEnabled(isolate, false);
CompileRun(
"log = []; \n"
"Debug.setListener(listener); \n"
"f(5); \n"
"Debug.setListener(null); // Break f \n");
ExpectNull("exception");
ExpectString("JSON.stringify(log)",
"[\"a4\",\"b2\",\"c4\",\"e0\",\"e0\",\"e0\",\"e0\",\"f0\"]");
}
size_t current_action = 0;
StepAction actions[] = {StepNext, StepNext};
static void DebugStepOverFunctionWithCaughtExceptionListener(
const v8::Debug::EventDetails& event_details) {
v8::DebugEvent event = event_details.GetEvent();
if (event != v8::Break) return;
++break_point_hit_count;
if (current_action >= 2) return;
PrepareStep(actions[current_action]);
}
TEST(DebugStepOverFunctionWithCaughtException) {
i::FLAG_allow_natives_syntax = true;
DebugLocalContext env;
v8::Isolate* isolate = env->GetIsolate();
v8::HandleScope scope(isolate);
v8::Debug::SetDebugEventListener(
isolate, DebugStepOverFunctionWithCaughtExceptionListener);
break_point_hit_count = 0;
CompileRun(
"function foo() {\n"
" try { throw new Error(); } catch (e) {}\n"
"}\n"
"debugger;\n"
"foo();\n"
"foo();\n");
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
CHECK_EQ(break_point_hit_count, 4);
}
bool out_of_memory_callback_called = false;
void OutOfMemoryCallback(void* data) {
out_of_memory_callback_called = true;
reinterpret_cast<v8::Isolate*>(data)->IncreaseHeapLimitForDebugging();
}
UNINITIALIZED_TEST(DebugSetOutOfMemoryListener) {
v8::Isolate::CreateParams create_params;
create_params.array_buffer_allocator = CcTest::array_buffer_allocator();
create_params.constraints.set_max_old_space_size(10);
v8::Isolate* isolate = v8::Isolate::New(create_params);
i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
{
v8::Isolate::Scope i_scope(isolate);
v8::HandleScope scope(isolate);
LocalContext context(isolate);
v8::debug::SetOutOfMemoryCallback(isolate, OutOfMemoryCallback,
reinterpret_cast<void*>(isolate));
CHECK(!out_of_memory_callback_called);
// The following allocation fails unless the out-of-memory callback
// increases the heap limit.
int length = 10 * i::MB / i::kPointerSize;
i_isolate->factory()->NewFixedArray(length, i::TENURED);
CHECK(out_of_memory_callback_called);
}
isolate->Dispose();
}
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