test_missing-keyframe.html

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<!doctype html>

<meta charset=utf-8>

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

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

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

<body>

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

<script>

'use strict';

test(t => {

  var div = addDiv(t, { style: 'margin-left: 100px' });

  div.animate([{ marginLeft: '200px' }], 100 * MS_PER_SEC);

  assert_equals(getComputedStyle(div).marginLeft, '100px',

                'The initial margin-left value should be the base value');

}, 'Initial margin-left value for an animation with no keyframe at offset 0');

test(t => {

  var div = addDiv(t, { style: 'margin-left: 100px' });

  div.animate([{ offset: 0, marginLeft: '200px' },

               { offset: 1, marginLeft: '300px' }],

              100 * MS_PER_SEC);

  div.animate([{ marginLeft: '200px' }], 100 * MS_PER_SEC);

  assert_equals(getComputedStyle(div).marginLeft, '200px',

                'The initial margin-left value should be the initial value ' +

                'of lower-priority animation');

}, 'Initial margin-left value for an animation with no keyframe at offset 0 ' +

   'is that of lower-priority animations');

test(t => {

  var div = addDiv(t, { style: 'margin-left: 100px;' +

                               'transition: margin-left 100s -50s linear'});

  flushComputedStyle(div);

  div.style.marginLeft = '200px';

  flushComputedStyle(div);

  div.animate([{ marginLeft: '300px' }], 100 * MS_PER_SEC);

  assert_equals(getComputedStyle(div).marginLeft, '150px',

                'The initial margin-left value should be the initial value ' +

                'of the transition');

}, 'Initial margin-left value for an animation with no keyframe at offset 0 ' +

   'is that of transition');

test(t => {

  var div = addDiv(t, { style: 'margin-left: 100px' });

  var animation = div.animate([{ offset: 0, marginLeft: '200px' }],

                              100 * MS_PER_SEC);

  animation.currentTime = 50 * MS_PER_SEC;

  assert_equals(getComputedStyle(div).marginLeft, '150px',

                'The margin-left value at 50% should be the base value');

}, 'margin-left value at 50% for an animation with no keyframe at offset 1');

test(t => {

  var div = addDiv(t, { style: 'margin-left: 100px' });

  var lowerAnimation = div.animate([{ offset: 0, marginLeft: '200px' },

                                    { offset: 1, marginLeft: '300px' }],

                                   100 * MS_PER_SEC);

  var higherAnimation = div.animate([{ offset: 0, marginLeft: '400px' }],

                                    100 * MS_PER_SEC);

  lowerAnimation.currentTime = 50 * MS_PER_SEC;

  higherAnimation.currentTime = 50 * MS_PER_SEC;

                                                 // (250px + 400px) * 0.5

  assert_equals(getComputedStyle(div).marginLeft, '325px',

                'The margin-left value at 50% should be additive value of ' +

                'lower-priority animation and higher-priority animation');

}, 'margin-left value at 50% for an animation with no keyframe at offset 1 ' +

   'is that of lower-priority animations');

test(t => {

  var div = addDiv(t, { style: 'margin-left: 100px;' +

                               'transition: margin-left 100s linear' });

  flushComputedStyle(div);

  div.style.marginLeft = '300px';

  flushComputedStyle(div);

  div.animate([{ offset: 0, marginLeft: '200px' }], 100 * MS_PER_SEC);

  div.getAnimations().forEach(animation => {

    animation.currentTime = 50 * MS_PER_SEC;

});

                                                 // (200px + 200px) * 0.5

  assert_equals(getComputedStyle(div).marginLeft, '200px',

                'The margin-left value at 50% should be additive value of ' +

                'the transition and animation');

}, 'margin-left value at 50% for an animation with no keyframe at offset 1 ' +

   'is that of transition');

test(t => {

  var div = addDiv(t, { style: 'margin-left: 100px' });

  var animation = div.animate([{ offset: 0, marginLeft: '200px' }],

                              { duration: 100 * MS_PER_SEC,

                                iterationStart: 1,

                                iterationComposite: 'accumulate' });

  assert_equals(getComputedStyle(div).marginLeft, '300px',

                'The margin-left value should be additive value of the ' +

                'accumulation of the initial value onto the base value ');

}, 'margin-left value for an animation with no keyframe at offset 1 and its ' +

   'iterationComposite is accumulate');

</script>

</body>