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// Copyright 2016 The Chromium 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 "extensions/renderer/api_binding_test.h"
#include "base/memory/ptr_util.h"
#include "base/threading/thread_task_runner_handle.h"
#include "gin/array_buffer.h"
#include "gin/public/context_holder.h"
#include "gin/public/isolate_holder.h"
#include "gin/v8_initializer.h"
namespace extensions {
APIBindingTest::APIBindingTest() {}
APIBindingTest::~APIBindingTest() {}
v8::ExtensionConfiguration* APIBindingTest::GetV8ExtensionConfiguration() {
return nullptr;
}
void APIBindingTest::SetUp() {
// Much of this initialization is stolen from the somewhat-similar
// gin::V8Test.
#ifdef V8_USE_EXTERNAL_STARTUP_DATA
gin::V8Initializer::LoadV8Snapshot();
gin::V8Initializer::LoadV8Natives();
#endif
gin::IsolateHolder::Initialize(gin::IsolateHolder::kStrictMode,
gin::IsolateHolder::kStableV8Extras,
gin::ArrayBufferAllocator::SharedInstance());
isolate_holder_ =
base::MakeUnique<gin::IsolateHolder>(base::ThreadTaskRunnerHandle::Get());
isolate()->Enter();
v8::HandleScope handle_scope(isolate());
v8::Local<v8::Context> context =
v8::Context::New(isolate(), GetV8ExtensionConfiguration());
context->Enter();
context_holder_ = base::MakeUnique<gin::ContextHolder>(isolate());
context_holder_->SetContext(context);
}
void APIBindingTest::TearDown() {
auto run_garbage_collection = [this]() {
// '5' is a magic number stolen from Blink; arbitrarily large enough to
// hopefully clean up all the various paths.
for (int i = 0; i < 5; ++i) {
isolate()->RequestGarbageCollectionForTesting(
v8::Isolate::kFullGarbageCollection);
}
};
if (context_holder_) {
// Check for leaks - a weak handle to a context is invalidated on context
// destruction, so resetting the context should reset the handle.
v8::Global<v8::Context> weak_context;
{
v8::HandleScope handle_scope(isolate());
v8::Local<v8::Context> context = ContextLocal();
weak_context.Reset(isolate(), context);
weak_context.SetWeak();
context->Exit();
}
context_holder_.reset();
// Garbage collect everything so that we find any issues where we might be
// double-freeing.
run_garbage_collection();
// The context should have been deleted.
// (ASSERT_TRUE is not used, so that Isolate::Exit is still called.)
EXPECT_TRUE(weak_context.IsEmpty());
} else {
// The context was already deleted (as through DisposeContext()), but we
// still need to garbage collect.
run_garbage_collection();
}
isolate()->Exit();
isolate_holder_.reset();
}
v8::Local<v8::Context> APIBindingTest::ContextLocal() {
return context_holder_->context();
}
void APIBindingTest::DisposeContext() {
context_holder_.reset();
}
v8::Isolate* APIBindingTest::isolate() {
return isolate_holder_->isolate();
}
} // namespace extensions
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