blob: 35e26d35f8880c588218e540ee8a6fec35426f20 [file] [log] [blame]
// Copyright 2015 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 "base/threading/sequenced_task_runner_handle.h"
#include <memory>
#include <utility>
#include "base/bind.h"
#include "base/callback.h"
#include "base/location.h"
#include "base/memory/ref_counted.h"
#include "base/run_loop.h"
#include "base/sequence_checker_impl.h"
#include "base/sequenced_task_runner.h"
#include "base/synchronization/waitable_event.h"
#include "base/task/post_task.h"
#include "base/test/scoped_task_environment.h"
#include "base/test/test_simple_task_runner.h"
#include "base/threading/thread_task_runner_handle.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace base {
namespace {
class SequencedTaskRunnerHandleTest : public ::testing::Test {
protected:
// Verifies that the context it runs on has a SequencedTaskRunnerHandle
// and that posting to it results in the posted task running in that same
// context (sequence).
static void VerifyCurrentSequencedTaskRunner() {
ASSERT_TRUE(SequencedTaskRunnerHandle::IsSet());
scoped_refptr<SequencedTaskRunner> task_runner =
SequencedTaskRunnerHandle::Get();
ASSERT_TRUE(task_runner);
// Use SequenceCheckerImpl to make sure it's not a no-op in Release builds.
std::unique_ptr<SequenceCheckerImpl> sequence_checker(
new SequenceCheckerImpl);
task_runner->PostTask(
FROM_HERE,
base::BindOnce(&SequencedTaskRunnerHandleTest::CheckValidSequence,
std::move(sequence_checker)));
}
static void CheckValidSequence(
std::unique_ptr<SequenceCheckerImpl> sequence_checker) {
EXPECT_TRUE(sequence_checker->CalledOnValidSequence());
}
base::test::ScopedTaskEnvironment scoped_task_environment_;
};
TEST_F(SequencedTaskRunnerHandleTest, FromTaskEnvironment) {
VerifyCurrentSequencedTaskRunner();
RunLoop().RunUntilIdle();
}
TEST_F(SequencedTaskRunnerHandleTest, FromThreadPoolSequencedTask) {
base::CreateSequencedTaskRunner({ThreadPool()})
->PostTask(FROM_HERE,
base::BindOnce(&SequencedTaskRunnerHandleTest::
VerifyCurrentSequencedTaskRunner));
scoped_task_environment_.RunUntilIdle();
}
TEST_F(SequencedTaskRunnerHandleTest, NoHandleFromUnsequencedTask) {
base::PostTask(FROM_HERE, base::BindOnce([]() {
EXPECT_FALSE(SequencedTaskRunnerHandle::IsSet());
}));
scoped_task_environment_.RunUntilIdle();
}
TEST(SequencedTaskRunnerHandleTestWithoutTaskEnvironment, FromHandleInScope) {
scoped_refptr<SequencedTaskRunner> test_task_runner(new TestSimpleTaskRunner);
EXPECT_FALSE(SequencedTaskRunnerHandle::IsSet());
EXPECT_FALSE(ThreadTaskRunnerHandle::IsSet());
{
SequencedTaskRunnerHandle handle(test_task_runner);
EXPECT_TRUE(SequencedTaskRunnerHandle::IsSet());
EXPECT_FALSE(ThreadTaskRunnerHandle::IsSet());
EXPECT_EQ(test_task_runner, SequencedTaskRunnerHandle::Get());
}
EXPECT_FALSE(SequencedTaskRunnerHandle::IsSet());
EXPECT_FALSE(ThreadTaskRunnerHandle::IsSet());
}
} // namespace
} // namespace base