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// Copyright 2017 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.
#ifndef THIRD_PARTY_BLINK_RENDERER_PLATFORM_TESTING_WTF_SCOPED_MOCK_CLOCK_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_TESTING_WTF_SCOPED_MOCK_CLOCK_H_
#include "third_party/blink/renderer/platform/wtf/time.h"
namespace WTF {
// Scoped helper to override WTF time functions for testing. Creating one on the
// stack resets mock time to the zero point for WTF::Time and WTF::TimeTicks.
// Mock time may only flow forwards, not backwards.
class ScopedMockClock {
public:
ScopedMockClock();
~ScopedMockClock();
static double Now();
void Advance(TimeDelta);
private:
static ScopedMockClock* top_;
ScopedMockClock* next_;
TimeFunction next_time_function_;
base::TimeTicks now_;
};
} // namespace WTF
#endif
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