v8/test/cctest/test-microtask-delivery.cc

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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 "v8.h"
#include "cctest.h"
using namespace v8;
namespace i = v8::internal;
namespace {
class HarmonyIsolate {
public:
HarmonyIsolate() {
isolate_ = Isolate::New();
isolate_->Enter();
}
~HarmonyIsolate() {
isolate_->Exit();
isolate_->Dispose();
}
Isolate* GetIsolate() const { return isolate_; }
private:
Isolate* isolate_;
};
}
TEST(MicrotaskDeliverySimple) {
HarmonyIsolate isolate;
HandleScope scope(isolate.GetIsolate());
LocalContext context(isolate.GetIsolate());
CompileRun(
"var ordering = [];"
"var resolver = {};"
"function handler(resolve) { resolver.resolve = resolve; }"
"var obj = {};"
"var observeOrders = [1, 4];"
"function observer() {"
"ordering.push(observeOrders.shift());"
"resolver.resolve();"
"}"
"var p = new Promise(handler);"
"p.then(function() {"
"ordering.push(2);"
"}).then(function() {"
"ordering.push(3);"
"obj.id++;"
"return new Promise(handler);"
"}).then(function() {"
"ordering.push(5);"
"}).then(function() {"
"ordering.push(6);"
"});"
"Object.observe(obj, observer);"
"obj.id = 1;");
CHECK_EQ(6, CompileRun("ordering.length")->Int32Value());
CHECK_EQ(1, CompileRun("ordering[0]")->Int32Value());
CHECK_EQ(2, CompileRun("ordering[1]")->Int32Value());
CHECK_EQ(3, CompileRun("ordering[2]")->Int32Value());
CHECK_EQ(4, CompileRun("ordering[3]")->Int32Value());
CHECK_EQ(5, CompileRun("ordering[4]")->Int32Value());
CHECK_EQ(6, CompileRun("ordering[5]")->Int32Value());
}
TEST(MicrotaskPerIsolateState) {
HarmonyIsolate isolate;
HandleScope scope(isolate.GetIsolate());
LocalContext context1(isolate.GetIsolate());
isolate.GetIsolate()->SetAutorunMicrotasks(false);
CompileRun(
"var obj = { calls: 0 };");
Handle<Value> obj = CompileRun("obj");
{
LocalContext context2(isolate.GetIsolate());
context2->Global()->Set(String::NewFromUtf8(isolate.GetIsolate(), "obj"),
obj);
CompileRun(
"var resolver = {};"
"new Promise(function(resolve) {"
"resolver.resolve = resolve;"
"}).then(function() {"
"obj.calls++;"
"});"
"(function() {"
"resolver.resolve();"
"})();");
}
{
LocalContext context3(isolate.GetIsolate());
context3->Global()->Set(String::NewFromUtf8(isolate.GetIsolate(), "obj"),
obj);
CompileRun(
"var foo = { id: 1 };"
"Object.observe(foo, function() {"
"obj.calls++;"
"});"
"foo.id++;");
}
{
LocalContext context4(isolate.GetIsolate());
context4->Global()->Set(String::NewFromUtf8(isolate.GetIsolate(), "obj"),
obj);
isolate.GetIsolate()->RunMicrotasks();
CHECK_EQ(2, CompileRun("obj.calls")->Int32Value());
}
}