third_party/WebKit/Source/core/animation/AnimationClockTest.cpp

   1 /*
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  30
  31 #include "config.h"
  32 #include "core/animation/AnimationClock.h"
  33
  34 #include "wtf/OwnPtr.h"
  35 #include <gtest/gtest.h>
  36
  37 using namespace blink;
  38
  39 namespace {
  40
  41 class AnimationAnimationClockTest : public ::testing::Test {
  42 public:
  43     AnimationAnimationClockTest()
  44         : animationClock(mockTimeFunction)
  45     { }
  46 protected:
  47     virtual void SetUp()
  48     {
  49         mockTime = 0;
  50         animationClock.resetTimeForTesting();
  51     }
  52
  53     static double mockTimeFunction()
  54     {
  55         return mockTime;
  56     }
  57
  58     static double mockTime;
  59     AnimationClock animationClock;
  60 };
  61
  62 double AnimationAnimationClockTest::mockTime;
  63
  64 TEST_F(AnimationAnimationClockTest, TimeIsGreaterThanZeroForUnitTests)
  65 {
  66     AnimationClock clock;
  67     // unit tests outside core/animation shouldn't need to do anything to get
  68     // a non-zero currentTime().
  69     EXPECT_GT(clock.currentTime(), 0);
  70 }
  71
  72 TEST_F(AnimationAnimationClockTest, TimeDoesNotChange)
  73 {
  74     animationClock.updateTime(100);
  75     EXPECT_EQ(100, animationClock.currentTime());
  76     EXPECT_EQ(100, animationClock.currentTime());
  77 }
  78
  79 TEST_F(AnimationAnimationClockTest, TimeAdvancesWhenUpdated)
  80 {
  81     animationClock.updateTime(100);
  82     EXPECT_EQ(100, animationClock.currentTime());
  83
  84     animationClock.updateTime(200);
  85     EXPECT_EQ(200, animationClock.currentTime());
  86 }
  87
  88 TEST_F(AnimationAnimationClockTest, TimeAdvancesToTaskTime)
  89 {
  90     animationClock.updateTime(100);
  91     EXPECT_EQ(100, animationClock.currentTime());
  92
  93     mockTime = 150;
  94     AnimationClock::notifyTaskStart();
  95     EXPECT_GE(animationClock.currentTime(), mockTime);
  96 }
  97
  98 TEST_F(AnimationAnimationClockTest, TimeAdvancesToTaskTimeOnlyWhenRequired)
  99 {
 100     animationClock.updateTime(100);
 101     EXPECT_EQ(100, animationClock.currentTime());
 102
 103     AnimationClock::notifyTaskStart();
 104     animationClock.updateTime(125);
 105     EXPECT_EQ(125, animationClock.currentTime());
 106 }
 107
 108 TEST_F(AnimationAnimationClockTest, UpdateTimeIsMonotonic)
 109 {
 110     animationClock.updateTime(100);
 111     EXPECT_EQ(100, animationClock.currentTime());
 112
 113     // Update can't go backwards.
 114     animationClock.updateTime(50);
 115     EXPECT_EQ(100, animationClock.currentTime());
 116
 117     mockTime = 50;
 118     AnimationClock::notifyTaskStart();
 119     EXPECT_EQ(100, animationClock.currentTime());
 120
 121     mockTime = 150;
 122     AnimationClock::notifyTaskStart();
 123     EXPECT_GE(animationClock.currentTime(), mockTime);
 124
 125     // Update can't go backwards after advance to estimate.
 126     animationClock.updateTime(100);
 127     EXPECT_GE(animationClock.currentTime(), mockTime);
 128 }
 129
 130 TEST_F(AnimationAnimationClockTest, CurrentTimeUpdatesTask)
 131 {
 132     animationClock.updateTime(100);
 133     EXPECT_EQ(100, animationClock.currentTime());
 134
 135     mockTime = 100;
 136     AnimationClock::notifyTaskStart();
 137     EXPECT_EQ(100, animationClock.currentTime());
 138
 139     mockTime = 150;
 140     EXPECT_EQ(100, animationClock.currentTime());
 141 }
 142
 143 }