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51 lines
1.6 KiB
C
51 lines
1.6 KiB
C
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// Copyright 2018 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef BASE_TEST_SCOPED_MOCK_CLOCK_OVERRIDE_H_
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#define BASE_TEST_SCOPED_MOCK_CLOCK_OVERRIDE_H_
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#include <memory>
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#include "base/macros.h"
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#include "base/time/time.h"
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#include "base/time/time_override.h"
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namespace base {
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// Override the return value of Time::Now(), Time::NowFromSystemTime(),
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// TimeTicks::Now(), and ThreadTicks::Now() through a simple advanceable clock.
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//
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// This utility is intended to support tests that:
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//
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// - Depend on large existing codebases that call TimeXYZ::Now() directly or
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// - Have no ability to inject a TickClock into the code getting the time
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// (e.g. integration tests in which a TickClock would be several layers
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// removed from the test code)
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//
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// For new unit tests, developers are highly encouraged to structure new code
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// around a dependency injected base::Clock, base::TickClock, etc. to be able
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// to supply a mock time in tests without a global override.
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class ScopedMockClockOverride {
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public:
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ScopedMockClockOverride();
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~ScopedMockClockOverride();
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static Time Now();
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static TimeTicks NowTicks();
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static ThreadTicks NowThreadTicks();
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void Advance(TimeDelta delta);
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private:
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std::unique_ptr<base::subtle::ScopedTimeClockOverrides> time_clock_overrides_;
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TimeDelta offset_;
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static ScopedMockClockOverride* scoped_mock_clock_;
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DISALLOW_COPY_AND_ASSIGN(ScopedMockClockOverride);
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};
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} // namespace base
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#endif // BASE_TEST_SCOPED_MOCK_CLOCK_OVERRIDE_H_
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