tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
Log | Files | Refs | README | LICENSE

ignore-with-containertiming-and-child-img.html (1786B)


      1 <!DOCTYPE HTML>
      2 <meta charset=utf-8>
      3 <title>Container Timing: an image inside a containertiming inside a containertiming-ignore</title>
      4 <body>
      5 <style>
      6 body {
      7  margin: 0;
      8 }
      9 </style>
     10 <script src="/resources/testharness.js"></script>
     11 <script src="/resources/testharnessreport.js"></script>
     12 <script src="/container-timing/resources/container-timing-helpers.js"></script>
     13 <script src="/element-timing/resources/element-timing-helpers.js"></script>
     14 <script>
     15  let beforeRender;
     16  async_test(function (t) {
     17    assert_implements(window.PerformanceContainerTiming, "PerformanceContainerTiming is not implemented");
     18    const observer = new PerformanceObserver(
     19      t.step_func_done(function(entryList) {
     20        assert_equals(entryList.getEntries().length, 1);
     21        const entry = entryList.getEntries()[0];
     22        checkContainerEntry(entry, 'div2_ct', 'img_id', beforeRender)
     23        checkRect(entry, [0, 100, 0, 100])
     24        checkContainerSize(entry, 10000);
     25      })
     26    );
     27    observer.observe({entryTypes: ['container']});
     28 
     29    // Add a div that is the container timing root
     30    const div1 = document.createElement('div');
     31    div1.setAttribute('containertiming-ignore', '');
     32    document.body.appendChild(div1);
     33 
     34    // Intermediate ignore should block paint events
     35    const div2 = document.createElement('div');
     36    div2.setAttribute('containertiming', 'div2_ct');
     37    div1.appendChild(div2)
     38 
     39    // Add image of width equal to 100 and height equal to 100.
     40    const img = document.createElement('img');
     41    img.src = '/container-timing/resources/square100.png';
     42    img.setAttribute('id', 'img_id');
     43    div2.appendChild(img);
     44 
     45    beforeRender = performance.now();
     46 }, 'An image inside a containertiming, inside a containertiming-ignore is still reported.');
     47 </script>
     48 
     49 </body>