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// Copyright 2014 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 <string>
#include "base/cancelable_callback.h"
#include "base/memory/scoped_ptr.h"
#include "base/strings/stringprintf.h"
#include "base/test/test_pending_task.h"
#include "cc/test/ordered_simple_task_runner.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace cc {
class OrderedSimpleTaskRunnerTest : public testing::Test {
public:
OrderedSimpleTaskRunnerTest() {
task_runner_ = new OrderedSimpleTaskRunner;
}
virtual ~OrderedSimpleTaskRunnerTest() {}
protected:
void CreateAndPostTask(int task_num, base::TimeDelta delay) {
base::Closure test_task = base::Bind(&OrderedSimpleTaskRunnerTest::Task,
base::Unretained(this),
task_num);
task_runner_->PostDelayedTask(FROM_HERE, test_task, delay);
}
void RunAndCheckResult(const std::string expected_result) {
task_runner_->RunPendingTasks();
EXPECT_EQ(expected_result, executed_tasks_);
}
private:
std::string executed_tasks_;
scoped_refptr<OrderedSimpleTaskRunner> task_runner_;
void Task(int task_num) {
if (!executed_tasks_.empty())
executed_tasks_ += " ";
executed_tasks_ += base::StringPrintf("%d", task_num);
}
DISALLOW_COPY_AND_ASSIGN(OrderedSimpleTaskRunnerTest);
};
TEST_F(OrderedSimpleTaskRunnerTest, BasicOrderingTest) {
CreateAndPostTask(1, base::TimeDelta());
CreateAndPostTask(2, base::TimeDelta());
CreateAndPostTask(3, base::TimeDelta());
RunAndCheckResult("1 2 3");
}
TEST_F(OrderedSimpleTaskRunnerTest, OrderingTestWithDelayedTasks) {
CreateAndPostTask(1, base::TimeDelta());
CreateAndPostTask(2, base::TimeDelta::FromMilliseconds(15));
CreateAndPostTask(3, base::TimeDelta());
CreateAndPostTask(4, base::TimeDelta::FromMilliseconds(8));
RunAndCheckResult("1 3 4 2");
}
} // namespace cc
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