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| 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #ifndef BASE_TEST_SCOPED_TIME_CONTROLLER_H_ |
| 6 #define BASE_TEST_SCOPED_TIME_CONTROLLER_H_ |
| 7 |
| 8 #include "base/compiler_specific.h" |
| 9 #include "base/time.h" |
| 10 |
| 11 namespace base { |
| 12 namespace test { |
| 13 |
| 14 // TimeFactory that captures and freeses current time, and let to advance it |
| 15 // manually. Sets itself as a TimeFactory instance on construction, and |
| 16 // restores the previous one on destruction. |
| 17 // Use it with care, as it might break assumed time monotonicity after deletion. |
| 18 // The best way is to set it first in SetUp and remove it last at the |
| 19 // TearDown method. |
| 20 class ScopedTimeController : public base::TimeFactory { |
| 21 public: |
| 22 ScopedTimeController(); |
| 23 virtual ~ScopedTimeController(); |
| 24 |
| 25 // Advances inner time for |delta|. |Delta| have to be non-negative. |
| 26 void Advance(base::TimeDelta delta); |
| 27 |
| 28 // TimeFactory overrides |
| 29 virtual base::Time TimeNow() OVERRIDE; |
| 30 virtual base::TimeTicks TimeTicksNow() OVERRIDE; |
| 31 private: |
| 32 base::Time current_time_; |
| 33 base::TimeTicks current_timeticks_; |
| 34 |
| 35 base::TimeFactory* replaced_instance_; |
| 36 |
| 37 DISALLOW_COPY_AND_ASSIGN(ScopedTimeController); |
| 38 }; |
| 39 |
| 40 } // namespace test |
| 41 } // namespace base |
| 42 |
| 43 #endif // BASE_TEST_SCOPED_TIME_CONTROLLER_H_ |
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