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<!doctype html>
<html>
  <head>
    <meta charset=utf-8>
    <title>Tests for seeking using Animation.currentTime</title>
    <style>
.animated-div {
  margin-left: -10px;
  animation-timing-function: linear ! important;
}

@keyframes anim {
  from { margin-left: 0px; }
  to { margin-left: 100px; }
}
    </style>
    <script src="../testcommon.js"></script>
  </head>
  <body>
    <script type="text/javascript">
'use strict';

function assert_marginLeft_equals(target, expect, description) {
  var marginLeft = parseFloat(getComputedStyle(target).marginLeft);
  assert_equals(marginLeft, expect, description);
}

promise_test(function(t) {
  var div = addDiv(t, {'class': 'animated-div'});
  div.style.animation = "anim 100s";
  var animation = div.getAnimations()[0];

  return animation.ready.then(function() {
    animation.currentTime = 90 * MS_PER_SEC;
    assert_marginLeft_equals(div, 90,
      'Computed style is updated when seeking forwards in active interval');

    animation.currentTime = 10 * MS_PER_SEC;
    assert_marginLeft_equals(div, 10,
      'Computed style is updated when seeking backwards in active interval');
  });
}, 'Seeking forwards and backward in active interval');

promise_test(function(t) {
  var div = addDiv(t, {'class': 'animated-div'});
  div.style.animation = "anim 100s 100s";
  var animation = div.getAnimations()[0];

  return animation.ready.then(function(t) {
    assert_marginLeft_equals(div, -10,
      'Computed style is unaffected in before phase with no backwards fill');

    // before -> active (non-active -> active)
    animation.currentTime = 150 * MS_PER_SEC;
    assert_marginLeft_equals(div, 50,
      'Computed style is updated when seeking forwards from ' +
      'not \'in effect\' to \'in effect\' state');
  });
}, 'Seeking to non-\'in effect\' from \'in effect\' (before -> active)');

promise_test(function(t) {
  var div = addDiv(t, {'class': 'animated-div'});
  div.style.animation = "anim 100s 100s";
  var animation = div.getAnimations()[0];

  return animation.ready.then(function(t) {
    // move to after phase
    animation.currentTime = 250 * MS_PER_SEC;
    assert_marginLeft_equals(div, -10,
      'Computed style is unaffected in after phase with no forwards fill');

    // after -> active (non-active -> active)
    animation.currentTime = 150 * MS_PER_SEC;
    assert_marginLeft_equals(div, 50,
      'Computed style is updated when seeking backwards from ' +
      'not \'in effect\' to \'in effect\' state');
  });
}, 'Seeking to non-\'in effect\' from \'in effect\' (after -> active)');

promise_test(function(t) {
  var div = addDiv(t, {'class': 'animated-div'});
  div.style.animation = "anim 100s 100s";
  var animation = div.getAnimations()[0];

  return animation.ready.then(function(t) {
    // move to active phase
    animation.currentTime = 150 * MS_PER_SEC;
    assert_marginLeft_equals(div, 50,
      'Computed value is set during active phase');

    // active -> before
    animation.currentTime = 50 * MS_PER_SEC;
    assert_marginLeft_equals(div, -10,
      'Computed value is not effected after seeking backwards from ' +
      '\'in effect\' to not \'in effect\' state');
  });
}, 'Seeking to \'in effect\' from non-\'in effect\' (active -> before)');

promise_test(function(t) {
  var div = addDiv(t, {'class': 'animated-div'});
  div.style.animation = "anim 100s 100s";
  var animation = div.getAnimations()[0];

  return animation.ready.then(function(t) {
    // move to active phase
    animation.currentTime = 150 * MS_PER_SEC;
    assert_marginLeft_equals(div, 50,
      'Computed value is set during active phase');

    // active -> after
    animation.currentTime = 250 * MS_PER_SEC;
    assert_marginLeft_equals(div, -10,
      'Computed value is not affected after seeking forwards from ' +
      '\'in effect\' to not \'in effect\' state');
  });
}, 'Seeking to \'in effect\' from non-\'in effect\' (active -> after)');

done();
    </script>
  </body>
</html>