chromium/third_party/blink/web_tests/transitions/transform-op-list-no-match.html

<!DOCTYPE html>

<html>
<head>
  <style>
    #box {
      height: 100px;
      width: 100px;
      background-color: blue;
      transform: translateX(0px) rotate(0deg);
      -webkit-transition-duration: 2s;
      -webkit-transition-timing-function: linear;
      -webkit-transition-property: transform;
    }
  </style>
  <script src="../animations/resources/animation-test-helpers.js"></script>
  <script type="text/javascript">
    
    function DegreesToRotation(angle)
    {
      return roundNumber(Math.cos(angle * Math.PI / 180), 5);
    }
    
    const expectedValues = [
      // [time, element-id, property, expected-value, tolerance]
      [0.5, "box", "-webkit-transform.0", DegreesToRotation(45), DegreesToRotation(10)],
      [1.0, "box", "-webkit-transform.0", DegreesToRotation(90), DegreesToRotation(10)],
    ];
    
    function setupTest()
    {
      var box = document.getElementById('box');
      box.style.webkitTransform = 'rotate(540deg)';
    }
    
    runTransitionTest(expectedValues, setupTest);
  </script>
</head>
<body>

<p>
Box should spin only 180 degrees even though the operation specifies a 0 to 540 degree animation.
This is because the operation lists don't match, so it falls back to matrix animation, which 
normalizes the angle to between 0 and 360 degrees.
</p>
<div id="box">
</div>
<div id="result">
</div>
</body>
</html>