1// Copyright 2013 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#include "base/run_loop.h"
6#include "base/time/time.h"
7#include "content/child/blink_platform_impl.h"
8#include "testing/gtest/include/gtest/gtest.h"
9
10namespace content {
11
12// Derives BlinkPlatformImpl for testing shared timers.
13class TestBlinkPlatformImpl : public BlinkPlatformImpl {
14 public:
15  TestBlinkPlatformImpl() : mock_monotonically_increasing_time_(0) {}
16
17  // Returns mock time when enabled.
18  virtual double monotonicallyIncreasingTime() OVERRIDE {
19    if (mock_monotonically_increasing_time_ > 0.0)
20      return mock_monotonically_increasing_time_;
21    return BlinkPlatformImpl::monotonicallyIncreasingTime();
22  }
23
24  virtual void OnStartSharedTimer(base::TimeDelta delay) OVERRIDE {
25    shared_timer_delay_ = delay;
26  }
27
28  base::TimeDelta shared_timer_delay() { return shared_timer_delay_; }
29
30  void set_mock_monotonically_increasing_time(double mock_time) {
31    mock_monotonically_increasing_time_ = mock_time;
32  }
33
34 private:
35  base::TimeDelta shared_timer_delay_;
36  double mock_monotonically_increasing_time_;
37
38  DISALLOW_COPY_AND_ASSIGN(TestBlinkPlatformImpl);
39};
40
41TEST(BlinkPlatformTest, SuspendResumeSharedTimer) {
42  base::MessageLoop message_loop;
43
44  TestBlinkPlatformImpl platform_impl;
45
46  // Set a timer to fire as soon as possible.
47  platform_impl.setSharedTimerFireInterval(0);
48
49  // Suspend timers immediately so the above timer wouldn't be fired.
50  platform_impl.SuspendSharedTimer();
51
52  // The above timer would have posted a task which can be processed out of the
53  // message loop.
54  base::RunLoop().RunUntilIdle();
55
56  // Set a mock time after 1 second to simulate timers suspended for 1 second.
57  double new_time = base::Time::Now().ToDoubleT() + 1;
58  platform_impl.set_mock_monotonically_increasing_time(new_time);
59
60  // Resume timers so that the timer set above will be set again to fire
61  // immediately.
62  platform_impl.ResumeSharedTimer();
63
64  EXPECT_TRUE(base::TimeDelta() == platform_impl.shared_timer_delay());
65}
66
67}  // namespace content
68