v8/test/cctest/compiler/test-run-jsexceptions.cc

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// Copyright 2014 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "src/objects-inl.h"
#include "test/cctest/compiler/function-tester.h"
namespace v8 {
namespace internal {
namespace compiler {
TEST(Throw) {
FunctionTester T("(function(a,b) { if (a) { throw b; } else { return b; }})");
T.CheckThrows(T.true_value(), T.NewObject("new Error"));
T.CheckCall(T.Val(23), T.false_value(), T.Val(23));
}
TEST(ThrowMessagePosition) {
static const char* src =
"(function(a, b) { \n"
" if (a == 1) throw 1; \n"
" if (a == 2) {throw 2} \n"
" if (a == 3) {0;throw 3}\n"
" throw 4; \n"
"}) ";
FunctionTester T(src);
v8::Local<v8::Message> message;
v8::Local<v8::Context> context = CcTest::isolate()->GetCurrentContext();
message = T.CheckThrowsReturnMessage(T.Val(1), T.undefined());
CHECK_EQ(2, message->GetLineNumber(context).FromMaybe(-1));
CHECK_EQ(40, message->GetStartPosition());
message = T.CheckThrowsReturnMessage(T.Val(2), T.undefined());
CHECK_EQ(3, message->GetLineNumber(context).FromMaybe(-1));
CHECK_EQ(67, message->GetStartPosition());
message = T.CheckThrowsReturnMessage(T.Val(3), T.undefined());
CHECK_EQ(4, message->GetLineNumber(context).FromMaybe(-1));
CHECK_EQ(95, message->GetStartPosition());
}
TEST(ThrowMessageDirectly) {
static const char* src =
"(function(a, b) {"
" if (a) { throw b; } else { throw new Error(b); }"
"})";
FunctionTester T(src);
v8::Local<v8::Message> message;
v8::Local<v8::Context> context = CcTest::isolate()->GetCurrentContext();
v8::Maybe<bool> t = v8::Just(true);
message = T.CheckThrowsReturnMessage(T.false_value(), T.Val("Wat?"));
CHECK(t == message->Get()->Equals(context, v8_str("Uncaught Error: Wat?")));
message = T.CheckThrowsReturnMessage(T.true_value(), T.Val("Kaboom!"));
CHECK(t == message->Get()->Equals(context, v8_str("Uncaught Kaboom!")));
}
TEST(ThrowMessageIndirectly) {
static const char* src =
"(function(a, b) {"
" try {"
" if (a) { throw b; } else { throw new Error(b); }"
" } finally {"
" try { throw 'clobber'; } catch (e) { 'unclobber'; }"
" }"
"})";
FunctionTester T(src);
v8::Local<v8::Message> message;
v8::Local<v8::Context> context = CcTest::isolate()->GetCurrentContext();
v8::Maybe<bool> t = v8::Just(true);
message = T.CheckThrowsReturnMessage(T.false_value(), T.Val("Wat?"));
CHECK(t == message->Get()->Equals(context, v8_str("Uncaught Error: Wat?")));
message = T.CheckThrowsReturnMessage(T.true_value(), T.Val("Kaboom!"));
CHECK(t == message->Get()->Equals(context, v8_str("Uncaught Kaboom!")));
}
TEST(Catch) {
const char* src =
"(function(a,b) {"
" var r = '-';"
" try {"
" r += 'A-';"
" throw 'B-';"
" } catch (e) {"
" r += e;"
" }"
" return r;"
"})";
FunctionTester T(src);
T.CheckCall(T.Val("-A-B-"));
}
TEST(CatchNested) {
const char* src =
"(function(a,b) {"
" var r = '-';"
" try {"
" r += 'A-';"
" throw 'C-';"
" } catch (e) {"
" try {"
" throw 'B-';"
" } catch (e) {"
" r += e;"
" }"
" r += e;"
" }"
" return r;"
"})";
FunctionTester T(src);
T.CheckCall(T.Val("-A-B-C-"));
}
TEST(CatchBreak) {
const char* src =
"(function(a,b) {"
" var r = '-';"
" L: try {"
" r += 'A-';"
" if (a) break L;"
" r += 'B-';"
" throw 'C-';"
" } catch (e) {"
" if (b) break L;"
" r += e;"
" }"
" r += 'D-';"
" return r;"
"})";
FunctionTester T(src);
T.CheckCall(T.Val("-A-D-"), T.true_value(), T.false_value());
T.CheckCall(T.Val("-A-B-D-"), T.false_value(), T.true_value());
T.CheckCall(T.Val("-A-B-C-D-"), T.false_value(), T.false_value());
}
TEST(CatchCall) {
const char* src =
"(function(fun) {"
" var r = '-';"
" try {"
" r += 'A-';"
" return r + 'B-' + fun();"
" } catch (e) {"
" r += e;"
" }"
" return r;"
"})";
FunctionTester T(src);
CompileRun("function thrower() { throw 'T-'; }");
T.CheckCall(T.Val("-A-T-"), T.NewFunction("thrower"));
CompileRun("function returner() { return 'R-'; }");
T.CheckCall(T.Val("-A-B-R-"), T.NewFunction("returner"));
}
TEST(Finally) {
const char* src =
"(function(a,b) {"
" var r = '-';"
" try {"
" r += 'A-';"
" } finally {"
" r += 'B-';"
" }"
" return r;"
"})";
FunctionTester T(src);
T.CheckCall(T.Val("-A-B-"));
}
TEST(FinallyBreak) {
const char* src =
"(function(a,b) {"
" var r = '-';"
" L: try {"
" r += 'A-';"
" if (a) return r;"
" r += 'B-';"
" if (b) break L;"
" r += 'C-';"
" } finally {"
" r += 'D-';"
" }"
" return r;"
"})";
FunctionTester T(src);
T.CheckCall(T.Val("-A-"), T.true_value(), T.false_value());
T.CheckCall(T.Val("-A-B-D-"), T.false_value(), T.true_value());
T.CheckCall(T.Val("-A-B-C-D-"), T.false_value(), T.false_value());
}
TEST(DeoptTry) {
const char* src =
"(function f(a) {"
" try {"
" %DeoptimizeFunction(f);"
" throw a;"
" } catch (e) {"
" return e + 1;"
" }"
"})";
FunctionTester T(src);
T.CheckCall(T.Val(2), T.Val(1));
}
TEST(DeoptCatch) {
const char* src =
"(function f(a) {"
" try {"
" throw a;"
" } catch (e) {"
" %DeoptimizeFunction(f);"
" return e + 1;"
" }"
"})";
FunctionTester T(src);
T.CheckCall(T.Val(2), T.Val(1));
}
TEST(DeoptFinallyReturn) {
const char* src =
"(function f(a) {"
" try {"
" throw a;"
" } finally {"
" %DeoptimizeFunction(f);"
" return a + 1;"
" }"
"})";
FunctionTester T(src);
T.CheckCall(T.Val(2), T.Val(1));
}
TEST(DeoptFinallyReThrow) {
const char* src =
"(function f(a) {"
" try {"
" throw a;"
" } finally {"
" %DeoptimizeFunction(f);"
" }"
"})";
FunctionTester T(src);
T.CheckThrows(T.NewObject("new Error"), T.Val(1));
}
} // namespace compiler
} // namespace internal
} // namespace v8