1 // Copyright 2014 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/test/simple_test_tick_clock.h"
6 #include "media/base/wall_clock_time_source.h"
7 #include "testing/gtest/include/gtest/gtest.h"
8
9 namespace media {
10
11 class WallClockTimeSourceTest : public testing::Test {
12 public:
WallClockTimeSourceTest()13 WallClockTimeSourceTest() : tick_clock_(new base::SimpleTestTickClock()) {
14 time_source_.SetTickClockForTesting(
15 scoped_ptr<base::TickClock>(tick_clock_));
16 }
~WallClockTimeSourceTest()17 virtual ~WallClockTimeSourceTest() {}
18
AdvanceTimeInSeconds(int seconds)19 void AdvanceTimeInSeconds(int seconds) {
20 tick_clock_->Advance(base::TimeDelta::FromSeconds(seconds));
21 }
22
CurrentMediaTimeInSeconds()23 int CurrentMediaTimeInSeconds() {
24 return time_source_.CurrentMediaTime().InSeconds();
25 }
26
SetMediaTimeInSeconds(int seconds)27 void SetMediaTimeInSeconds(int seconds) {
28 return time_source_.SetMediaTime(base::TimeDelta::FromSeconds(seconds));
29 }
30
31 WallClockTimeSource time_source_;
32
33 private:
34 base::SimpleTestTickClock* tick_clock_; // Owned by |time_source_|.
35
36 DISALLOW_COPY_AND_ASSIGN(WallClockTimeSourceTest);
37 };
38
TEST_F(WallClockTimeSourceTest,InitialTimeIsZero)39 TEST_F(WallClockTimeSourceTest, InitialTimeIsZero) {
40 EXPECT_EQ(0, CurrentMediaTimeInSeconds());
41 }
42
TEST_F(WallClockTimeSourceTest,InitialTimeIsNotTicking)43 TEST_F(WallClockTimeSourceTest, InitialTimeIsNotTicking) {
44 EXPECT_EQ(0, CurrentMediaTimeInSeconds());
45 AdvanceTimeInSeconds(100);
46 EXPECT_EQ(0, CurrentMediaTimeInSeconds());
47 }
48
TEST_F(WallClockTimeSourceTest,InitialPlaybackRateIsOne)49 TEST_F(WallClockTimeSourceTest, InitialPlaybackRateIsOne) {
50 time_source_.StartTicking();
51
52 EXPECT_EQ(0, CurrentMediaTimeInSeconds());
53 AdvanceTimeInSeconds(100);
54 EXPECT_EQ(100, CurrentMediaTimeInSeconds());
55 }
56
TEST_F(WallClockTimeSourceTest,SetMediaTime)57 TEST_F(WallClockTimeSourceTest, SetMediaTime) {
58 EXPECT_EQ(0, CurrentMediaTimeInSeconds());
59 SetMediaTimeInSeconds(10);
60 EXPECT_EQ(10, CurrentMediaTimeInSeconds());
61 }
62
TEST_F(WallClockTimeSourceTest,SetPlaybackRate)63 TEST_F(WallClockTimeSourceTest, SetPlaybackRate) {
64 time_source_.StartTicking();
65
66 time_source_.SetPlaybackRate(0.5);
67 EXPECT_EQ(0, CurrentMediaTimeInSeconds());
68 AdvanceTimeInSeconds(10);
69 EXPECT_EQ(5, CurrentMediaTimeInSeconds());
70
71 time_source_.SetPlaybackRate(2);
72 EXPECT_EQ(5, CurrentMediaTimeInSeconds());
73 AdvanceTimeInSeconds(10);
74 EXPECT_EQ(25, CurrentMediaTimeInSeconds());
75 }
76
TEST_F(WallClockTimeSourceTest,StopTicking)77 TEST_F(WallClockTimeSourceTest, StopTicking) {
78 time_source_.StartTicking();
79
80 EXPECT_EQ(0, CurrentMediaTimeInSeconds());
81 AdvanceTimeInSeconds(10);
82 EXPECT_EQ(10, CurrentMediaTimeInSeconds());
83
84 time_source_.StopTicking();
85
86 AdvanceTimeInSeconds(10);
87 EXPECT_EQ(10, CurrentMediaTimeInSeconds());
88 }
89
90 } // namespace media
91