longhand-vs-shorthand-initial.html | Explore in Territory

<!DOCTYPE>

<html>
<head>
  <style>
    .box {
        height: 100px;
        width: 100px;
        margin: 10px;
        background-color: white;
        -webkit-transition-property: width;
    }
    
    .box {
        -webkit-transition: 2s;
    }
    
    #box.final {
        background-color: black;
    }

  </style>
  <script src="../animations/resources/animation-test-helpers.js"></script>
  <script type="text/javascript">

    const expectedValues = [
      // [time, element-id, property, expected-value, tolerance]
      [0.5, 'box', 'background-color', [153, 153, 153], 4],
    ];
  
    function setupTest()
    {
      document.getElementById('box').className = 'box final';
    }
  
    runTransitionTest(expectedValues, setupTest);
  </script>
</head>
<body>

  <div id="box" class="box"></div>

  <div id="result">
  </div>

</body>
</html>

chromium/third_party/blink/web_tests/transitions/longhand-vs-shorthand-initial.html