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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <memory>
#include "base/test/simple_test_tick_clock.h"
#include "base/time/time.h"
#include "media/base/wall_clock_time_source.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace media {
class WallClockTimeSourceTest : public testing::Test {
public:
WallClockTimeSourceTest() : tick_clock_(new base::SimpleTestTickClock()) {
time_source_.SetTickClockForTesting(tick_clock_.get());
AdvanceTimeInSeconds(1);
}
WallClockTimeSourceTest(const WallClockTimeSourceTest&) = delete;
WallClockTimeSourceTest& operator=(const WallClockTimeSourceTest&) = delete;
~WallClockTimeSourceTest() override = default;
void AdvanceTimeInSeconds(int seconds) {
tick_clock_->Advance(base::Seconds(seconds));
}
int CurrentMediaTimeInSeconds() {
return time_source_.CurrentMediaTime().InSeconds();
}
void SetMediaTimeInSeconds(int seconds) {
return time_source_.SetMediaTime(base::Seconds(seconds));
}
base::TimeTicks ConvertMediaTime(base::TimeDelta timestamp,
bool* is_time_moving) {
std::vector<base::TimeTicks> wall_clock_times;
*is_time_moving = time_source_.GetWallClockTimes(
std::vector<base::TimeDelta>(1, timestamp), &wall_clock_times);
return wall_clock_times[0];
}
bool IsWallClockNowForMediaTimeInSeconds(int seconds) {
bool is_time_moving = false;
return tick_clock_->NowTicks() ==
ConvertMediaTime(base::Seconds(seconds), &is_time_moving);
}
bool IsTimeStopped() {
bool is_time_moving = false;
// Convert any random value, it shouldn't matter for this call.
ConvertMediaTime(base::Seconds(1), &is_time_moving);
return !is_time_moving;
}
protected:
WallClockTimeSource time_source_;
std::unique_ptr<base::SimpleTestTickClock> tick_clock_;
};
TEST_F(WallClockTimeSourceTest, InitialTimeIsZero) {
EXPECT_EQ(0, CurrentMediaTimeInSeconds());
EXPECT_TRUE(IsTimeStopped());
}
TEST_F(WallClockTimeSourceTest, InitialTimeIsNotTicking) {
EXPECT_EQ(0, CurrentMediaTimeInSeconds());
EXPECT_TRUE(IsTimeStopped());
AdvanceTimeInSeconds(100);
EXPECT_EQ(0, CurrentMediaTimeInSeconds());
EXPECT_TRUE(IsTimeStopped());
}
TEST_F(WallClockTimeSourceTest, InitialPlaybackRateIsOne) {
time_source_.StartTicking();
EXPECT_EQ(0, CurrentMediaTimeInSeconds());
EXPECT_TRUE(IsWallClockNowForMediaTimeInSeconds(0));
AdvanceTimeInSeconds(100);
EXPECT_EQ(100, CurrentMediaTimeInSeconds());
EXPECT_TRUE(IsWallClockNowForMediaTimeInSeconds(100));
}
TEST_F(WallClockTimeSourceTest, SetMediaTime) {
EXPECT_EQ(0, CurrentMediaTimeInSeconds());
EXPECT_TRUE(IsTimeStopped());
SetMediaTimeInSeconds(10);
EXPECT_EQ(10, CurrentMediaTimeInSeconds());
EXPECT_TRUE(IsTimeStopped());
std::vector<base::TimeTicks> wall_clock_times;
time_source_.GetWallClockTimes(std::vector<base::TimeDelta>(),
&wall_clock_times);
EXPECT_EQ(base::TimeTicks(), wall_clock_times[0]);
}
TEST_F(WallClockTimeSourceTest, SetPlaybackRate) {
time_source_.StartTicking();
time_source_.SetPlaybackRate(0.5);
EXPECT_EQ(0, CurrentMediaTimeInSeconds());
EXPECT_TRUE(IsWallClockNowForMediaTimeInSeconds(0));
AdvanceTimeInSeconds(10);
EXPECT_EQ(5, CurrentMediaTimeInSeconds());
EXPECT_TRUE(IsWallClockNowForMediaTimeInSeconds(5));
time_source_.SetPlaybackRate(2);
EXPECT_EQ(5, CurrentMediaTimeInSeconds());
EXPECT_TRUE(IsWallClockNowForMediaTimeInSeconds(5));
AdvanceTimeInSeconds(10);
EXPECT_EQ(25, CurrentMediaTimeInSeconds());
EXPECT_TRUE(IsWallClockNowForMediaTimeInSeconds(25));
}
TEST_F(WallClockTimeSourceTest, StopTicking) {
time_source_.StartTicking();
EXPECT_EQ(0, CurrentMediaTimeInSeconds());
EXPECT_TRUE(IsWallClockNowForMediaTimeInSeconds(0));
AdvanceTimeInSeconds(10);
EXPECT_EQ(10, CurrentMediaTimeInSeconds());
EXPECT_TRUE(IsWallClockNowForMediaTimeInSeconds(10));
time_source_.StopTicking();
AdvanceTimeInSeconds(10);
EXPECT_EQ(10, CurrentMediaTimeInSeconds());
EXPECT_TRUE(IsTimeStopped());
}
TEST_F(WallClockTimeSourceTest, ConvertsTimestampsWhenStopped) {
const base::TimeDelta kOneSecond = base::Seconds(1);
bool is_time_moving = false;
EXPECT_EQ(base::TimeTicks(),
ConvertMediaTime(base::TimeDelta(), &is_time_moving));
EXPECT_FALSE(is_time_moving);
EXPECT_NE(base::TimeTicks(), ConvertMediaTime(kOneSecond, &is_time_moving));
EXPECT_FALSE(is_time_moving);
time_source_.StartTicking();
time_source_.StopTicking();
EXPECT_EQ(tick_clock_->NowTicks(),
ConvertMediaTime(base::TimeDelta(), &is_time_moving));
EXPECT_FALSE(is_time_moving);
EXPECT_EQ(tick_clock_->NowTicks() + kOneSecond,
ConvertMediaTime(kOneSecond, &is_time_moving));
EXPECT_FALSE(is_time_moving);
}
TEST_F(WallClockTimeSourceTest, EmptyMediaTimestampsReturnMediaWallClockTime) {
std::vector<base::TimeTicks> wall_clock_times;
bool is_time_moving = time_source_.GetWallClockTimes(
std::vector<base::TimeDelta>(), &wall_clock_times);
EXPECT_FALSE(is_time_moving);
EXPECT_EQ(base::TimeTicks(), wall_clock_times[0]);
wall_clock_times.clear();
time_source_.StartTicking();
is_time_moving = time_source_.GetWallClockTimes(
std::vector<base::TimeDelta>(), &wall_clock_times);
EXPECT_TRUE(is_time_moving);
EXPECT_EQ(tick_clock_->NowTicks(), wall_clock_times[0]);
wall_clock_times.clear();
time_source_.StopTicking();
is_time_moving = time_source_.GetWallClockTimes(
std::vector<base::TimeDelta>(), &wall_clock_times);
EXPECT_FALSE(is_time_moving);
EXPECT_EQ(tick_clock_->NowTicks(), wall_clock_times[0]);
// Setting media time should clear reference time.
SetMediaTimeInSeconds(5);
wall_clock_times.clear();
is_time_moving = time_source_.GetWallClockTimes(
std::vector<base::TimeDelta>(), &wall_clock_times);
EXPECT_FALSE(is_time_moving);
EXPECT_EQ(base::TimeTicks(), wall_clock_times[0]);
}
} // namespace media
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