<html lang="en">
<head>
  <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
  <title>Test of animation-play-state</title>
  <style type="text/css" media="screen">
    body {
      margin: 0;
    }

    #box {
      position: absolute;
      left: 0px;
      top: 100px;
      height: 100px;
      width: 100px;
      background-color: red;
      margin: 0;
      animation-duration: 500ms;
      animation-direction: reverse;
      animation-iteration-count: infinite;
      animation-timing-function: linear;
      animation-name: "move1";
    }

    @keyframes move1 {
      from { margin-left: 0px; }
      to   { margin-left: 200px; }
    }
  </style>
  <script src="../resources/testharness.js"></script>
  <script src="../resources/testharnessreport.js"></script>
  <script src="resources/animation-test.js"></script>
</head>
<body>
<div id="box"></div>
<script>
    promise_test(async t => {
        const delay = 100;

        const test = new AnimationTest({
            target: document.getElementById("box"),
            styleExtractor: style => parseFloat(style.marginLeft)
        });

        // Record two computed values after the specified delay each.
        await test.recordValueAfterRunningFor(delay);
        await test.recordValueAfterRunningFor(delay);

        // We'll now pause the animation using the CSS property "animation-play-state".
        box.style.animationPlayState = "paused";

        // And now we'll record values after 250ms each and check that those are the same.
        const initialPausedValue = await test.valueAfterWaitingFor(delay);
        const currentPausedValue = await test.valueAfterWaitingFor(delay);
        assert_equals(initialPausedValue, currentPausedValue, "Values recorded while paused are the same.");

        // Finally, check the values recorded earlier in the test.
        test.checkRecordedValues();
    }, `Pausing an animation using the animation-play-state property stops animating styles with animation-direction: reverse.`);
</script>
</body>
</html>