fill-mode.html | Explore in Territory

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
   "http://www.w3.org/TR/html4/loose.dtd">
<title>Test simple animation with fill modes</title>
<style type="text/css" media="screen">
.box {
  position: relative;
  left: 100px;
  top: 10px;
  height: 100px;
  width: 100px;
  animation-delay: 0.1s;
  animation-duration: 0.1s;
  animation-timing-function: linear;
  animation-play-state:  paused;
  animation-name: anim;
}
@keyframes anim {
    from { left: 200px; }
    to   { left: 300px; }
}
#a {
  background-color: blue;
  animation-fill-mode: none;
}
#b {
  background-color: red;
  animation-fill-mode: backwards;
}
#c {
  background-color: green;
  animation-fill-mode: forwards;
}
#d {
  background-color: yellow;
  animation-fill-mode: both;
}
#e {
  background-color: #999;
  animation-fill-mode: both;
  animation-iteration-count: 2;
  animation-direction: alternate;
}
</style>
<script src="../../resources/testharness.js"></script>
<script src="../../resources/testharnessreport.js"></script>
<script type="text/javascript" charset="utf-8">
"use strict";
const expectedValues = [
  {id: "a", start: 100, end: 100},
  {id: "b", start: 200, end: 100},
  {id: "c", start: 100, end: 300},
  {id: "d", start: 200, end: 300},
  {id: "e", start: 200, end: 200}
];

async_test(t => {
  function endTest() {
    for (var i=0; i < expectedValues.length; i++) {
      var el = document.getElementById(expectedValues[i].id);
      var expectedValue = expectedValues[i].end;
      var realValue = parseFloat(window.getComputedStyle(el).left);
      assert_equals(realValue, expectedValue,
          `end of animation - id: ${expectedValues[i].id} expected: ` +
          `${expectedValue} actual: ${realValue}`);
    }
    t.done();
  }

  window.addEventListener("load", t.step_func(() => {
    for (var i=0; i < expectedValues.length; i++) {
      var el = document.getElementById(expectedValues[i].id);
      var expectedValue = expectedValues[i].start;
      var realValue = parseFloat(window.getComputedStyle(el).left);
      assert_equals(realValue, expectedValue,
          `start of animation - id: ${expectedValues[i].id} expected: ` +
          `${expectedValue} actual: ${realValue}`);
    }
    // We start each animation in a paused state and play only after the initial
    // snapshot to prevent a test flake.
    let promises = [];
    document.getAnimations().forEach(anim => {
      anim.play();
      promises.push(anim.finished);
    });
    Promise.all(promises).then(endTest);
  }));
}, 'This test performs an animation of the left property with four different fill modes. It animates over 0.1 second with a 0.1 second delay. It takes snapshots at document load and the end of the animation');
</script>
<div id="a" class="box">
  None
</div>
<div id="b" class="box">
  Backwards
</div>
<div id="c" class="box">
  Forwards
</div>
<div id="d" class="box">
  Both
</div>
<div id="e" class="box">
  Both iterating
</div>
chromium/third_party/blink/web_tests/animations/direction-and-fill/fill-mode.html
