Roll Chrome into Mojo.

base/test/mock_time_provider.h

-// Copyright (c) 2011 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.
-
-// TODO(akalin): Change all users of this class to use SimpleTestClock
-// or SimpleTestTickClock and remove this class.
-
-// A helper class used to mock out calls to the static method base::Time::Now.
-//
-// Example usage:
-//
-// typedef base::Time(TimeProvider)();
-// class StopWatch {
-//  public:
-//   StopWatch(TimeProvider* time_provider);
-//   void Start();
-//   base::TimeDelta Stop();
-//  private:
-//   TimeProvider* time_provider_;
-//   ...
-// }
-//
-// Normally, you would instantiate a StopWatch with the real Now function:
-//
-// StopWatch watch(&base::Time::Now);
-//
-// But when testing, you want to instantiate it with
-// MockTimeProvider::StaticNow, which calls an internally mocked out member.
-// This allows you to set expectations on the Now method. For example:
-//
-// TEST_F(StopWatchTest, BasicTest) {
-//   InSequence s;
-//   StrictMock<MockTimeProvider> mock_time;
-//   EXPECT_CALL(mock_time, Now())
-//       .WillOnce(Return(Time::FromDoubleT(4)));
-//   EXPECT_CALL(mock_time, Now())
-//       .WillOnce(Return(Time::FromDoubleT(10)));
-//
-//   StopWatch sw(&MockTimeProvider::StaticNow);
-//   sw.Start();  // First call to Now.
-//   TimeDelta elapsed = sw.stop();  // Second call to Now.
-//   ASSERT_EQ(elapsed, TimeDelta::FromSeconds(6));
-// }
-
-#ifndef BASE_TEST_MOCK_TIME_PROVIDER_H_
-#define BASE_TEST_MOCK_TIME_PROVIDER_H_
-
-#include "base/time/time.h"
-#include "testing/gmock/include/gmock/gmock.h"
-
-namespace base {
-
-class MockTimeProvider {
- public:
-  MockTimeProvider();
-  ~MockTimeProvider();
-
-  MOCK_METHOD0(Now, Time());
-
-  static Time StaticNow();
-
- private:
-  static MockTimeProvider* instance_;
-  DISALLOW_COPY_AND_ASSIGN(MockTimeProvider);
-};
-
-}  // namespace base
-
-#endif  // BASE_TEST_MOCK_TIME_PROVIDER_H_