third_party/WebKit/LayoutTests/imported/wpt/web-animations/animation/playbackRate.html - Issue 1999243002: Import wpt@5df9b57edb3307a87d5187804b29c8ddd2aa14e1

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Issue 1999243002: Import wpt@5df9b57edb3307a87d5187804b29c8ddd2aa14e1 (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master

Patch Set: Add expectations files (using run-webkit-tests --new-baseline) Created 4 years, 6 months ago

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1 <!DOCTYPE html>

2 <meta charset=utf-8>

3 <title>Animation.playbackRate</title>

4 <link rel="help" href="https://w3c.github.io/web-animations/#dom-animation-playb ackrate">

5 <script src="../../../../resources/testharness.js"></script>

6 <script src="../../../../resources/testharnessreport.js"></script>

7 <script src="../testcommon.js"></script>

8 <link rel="stylesheet" href="../../../../resources/testharness.css">

9 <body>

10 <div id="log"></div>

11 <script>

12 "use strict";

13

14 function assert_playbackrate(animation,

15 previousAnimationCurrentTime,

16 previousTimelineCurrentTime,

17 description) {

18 var accuracy = 0.001; /* accuracy of DOMHighResTimeStamp */

19 var animationCurrentTimeDifference =

20 animation.currentTime - previousAnimationCurrentTime;

21 var timelineCurrentTimeDifference =

22 animation.timeline.currentTime - previousTimelineCurrentTime;

23

24 assert_approx_equals(animationCurrentTimeDifference,

25 timelineCurrentTimeDifference * animation.playbackRate,

26 accuracy,

27 description);

28 }

29

30 promise_test(function(t) {

31 var div = createDiv(t);

32 var animation = div.animate(null, 100 * MS_PER_SEC);

33 return animation.ready.then(function() {

34 animation.currentTime = 7 * MS_PER_SEC; // ms

35 animation.playbackRate = 0.5;

36

37 assert_equals(animation.currentTime, 7 * MS_PER_SEC,

38 'Reducing Animation.playbackRate should not change the currentTime ' +

39 'of a playing animation');

40 animation.playbackRate = 2;

41 assert_equals(animation.currentTime, 7 * MS_PER_SEC,

42 'Increasing Animation.playbackRate should not change the currentTime ' +

43 'of a playing animation');

44 });

45 }, 'Test the initial effect of setting playbackRate on currentTime');

46

47 promise_test(function(t) {

48 var div = createDiv(t);

49 var animation = div.animate(null, 100 * MS_PER_SEC);

50 animation.playbackRate = 2;

51 var previousTimelineCurrentTime;

52 var previousAnimationCurrentTime;

53 return animation.ready.then(function() {

54 previousAnimationCurrentTime = animation.currentTime;

55 previousTimelineCurrentTime = animation.timeline.currentTime;

56 return waitForAnimationFrames(1);

57 }).then(function() {

58 assert_playbackrate(animation,

59 previousAnimationCurrentTime,

60 previousTimelineCurrentTime,

61 'animation.currentTime should be 2 times faster than timeline.');

62 });

63 }, 'Test the effect of setting playbackRate on currentTime');

64

65 promise_test(function(t) {

66 var div = createDiv(t);

67 var animation = div.animate(null, 100 * MS_PER_SEC);

68 animation.playbackRate = 2;

69 var previousTimelineCurrentTime;

70 var previousAnimationCurrentTime;

71 return animation.ready.then(function() {

72 previousAnimationCurrentTime = animation.currentTime;

73 previousTimelineCurrentTime = animation.timeline.currentTime;

74 animation.playbackRate = 1;

75 return waitForAnimationFrames(1);

76 }).then(function() {

77 assert_equals(animation.playbackRate, 1,

78 'sanity check: animation.playbackRate is still 1.');

79 assert_playbackrate(animation,

80 previousAnimationCurrentTime,

81 previousTimelineCurrentTime,

82 'animation.currentTime should be the same speed as timeline now.');

83 });

84 }, 'Test the effect of setting playbackRate while playing animation');

85

86 </script>

87 </body>

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