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base / test / test_message_loop.h [blame]
// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef BASE_TEST_TEST_MESSAGE_LOOP_H_
#define BASE_TEST_TEST_MESSAGE_LOOP_H_
#include "base/message_loop/message_pump_type.h"
#include "base/task/single_thread_task_runner.h"
#include "base/test/task_environment.h"
namespace base {
// TestMessageLoop is a convenience class for unittests that need to create a
// message loop without a real thread backing it. For most tests,
// it is sufficient to just instantiate TestMessageLoop as a member variable.
//
// TestMessageLoop will attempt to drain the underlying MessageLoop on
// destruction for clean teardown of tests.
//
// TODO(b/891670): Get rid of this and migrate users to
// SingleThreadTaskEnvironment
class TestMessageLoop {
public:
TestMessageLoop();
explicit TestMessageLoop(MessagePumpType type);
~TestMessageLoop();
scoped_refptr<SingleThreadTaskRunner> task_runner() {
return task_environment_.GetMainThreadTaskRunner();
}
private:
test::SingleThreadTaskEnvironment task_environment_;
};
} // namespace base
#endif // BASE_TEST_TEST_MESSAGE_LOOP_H_