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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 "base/task_scheduler/test_task_factory.h"
#include "base/bind.h"
#include "base/bind_helpers.h"
#include "base/callback.h"
#include "base/location.h"
#include "base/logging.h"
#include "base/synchronization/waitable_event.h"
#include "base/threading/sequenced_task_runner_handle.h"
#include "base/threading/thread_task_runner_handle.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace base {
namespace internal {
namespace test {
TestTaskFactory::TestTaskFactory(scoped_refptr<TaskRunner> task_runner,
ExecutionMode execution_mode)
: cv_(&lock_),
task_runner_(std::move(task_runner)),
execution_mode_(execution_mode) {
// Detach |thread_checker_| from the current thread. It will be attached to
// the first thread that calls ThreadCheckerImpl::CalledOnValidThread().
thread_checker_.DetachFromThread();
}
TestTaskFactory::~TestTaskFactory() {
WaitForAllTasksToRun();
}
bool TestTaskFactory::PostTask(PostNestedTask post_nested_task,
OnceClosure after_task_closure) {
AutoLock auto_lock(lock_);
return task_runner_->PostTask(
FROM_HERE, BindOnce(&TestTaskFactory::RunTaskCallback, Unretained(this),
num_posted_tasks_++, post_nested_task,
std::move(after_task_closure)));
}
void TestTaskFactory::WaitForAllTasksToRun() const {
AutoLock auto_lock(lock_);
while (ran_tasks_.size() < num_posted_tasks_)
cv_.Wait();
}
void TestTaskFactory::RunTaskCallback(size_t task_index,
PostNestedTask post_nested_task,
OnceClosure after_task_closure) {
if (post_nested_task == PostNestedTask::YES)
PostTask(PostNestedTask::NO, Closure());
EXPECT_TRUE(task_runner_->RunsTasksInCurrentSequence());
// Verify TaskRunnerHandles are set as expected in the task's scope.
switch (execution_mode_) {
case ExecutionMode::PARALLEL:
EXPECT_FALSE(ThreadTaskRunnerHandle::IsSet());
EXPECT_FALSE(SequencedTaskRunnerHandle::IsSet());
break;
case ExecutionMode::SEQUENCED:
EXPECT_FALSE(ThreadTaskRunnerHandle::IsSet());
EXPECT_TRUE(SequencedTaskRunnerHandle::IsSet());
EXPECT_EQ(task_runner_, SequencedTaskRunnerHandle::Get());
break;
case ExecutionMode::SINGLE_THREADED:
// SequencedTaskRunnerHandle inherits from ThreadTaskRunnerHandle so
// both are expected to be "set" in the SINGLE_THREADED case.
EXPECT_TRUE(ThreadTaskRunnerHandle::IsSet());
EXPECT_TRUE(SequencedTaskRunnerHandle::IsSet());
EXPECT_EQ(task_runner_, ThreadTaskRunnerHandle::Get());
EXPECT_EQ(task_runner_, SequencedTaskRunnerHandle::Get());
break;
}
{
AutoLock auto_lock(lock_);
DCHECK_LE(task_index, num_posted_tasks_);
if ((execution_mode_ == ExecutionMode::SINGLE_THREADED ||
execution_mode_ == ExecutionMode::SEQUENCED) &&
task_index != ran_tasks_.size()) {
ADD_FAILURE() << "A task didn't run in the expected order.";
}
if (execution_mode_ == ExecutionMode::SINGLE_THREADED)
EXPECT_TRUE(thread_checker_.CalledOnValidThread());
if (ran_tasks_.find(task_index) != ran_tasks_.end())
ADD_FAILURE() << "A task ran more than once.";
ran_tasks_.insert(task_index);
cv_.Signal();
}
if (!after_task_closure.is_null())
std::move(after_task_closure).Run();
}
} // namespace test
} // namespace internal
} // namespace base
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