containertiming-with-child-ignore-and-child-img.html

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This test has a WPT meta file that expects 1 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /container-timing/tentative/containertiming-with-child-ignore-and-child-img.html - WPT Dashboard Interop Dashboard

<!DOCTYPE HTML>

<meta charset=utf-8>

<title>Container Timing: an image inside a containertiming-ignore inside a containertiming root</title>

<body>

<style>

body {

  margin: 0;

</style>

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<script src="/container-timing/resources/container-timing-helpers.js"></script>

<script src="/element-timing/resources/element-timing-helpers.js"></script>

<script>

  async_test(function (t) {

    assert_implements(window.PerformanceContainerTiming, "PerformanceContainerTiming is not implemented");

    const observer = new PerformanceObserver(

      function(entryList) {

        assert_unreached("No entry is expected with nothing to paint");

);

    observer.observe({entryTypes: ['container']});

    finishOnElementTiming(t);

    // Add a div that is the container timing root

    const div1 = document.createElement('div');

    div1.setAttribute('containertiming', 'div1_ct');

    document.body.appendChild(div1);

    // Intermediate ignore should block paint events

    const div2 = document.createElement('div');

    div2.setAttribute('containertiming-ignore', '');

    div1.appendChild(div2)

    // Add image of width equal to 100 and height equal to 100.

    const img = document.createElement('img');

    img.src = '/container-timing/resources/square100.png';

    img.setAttribute('id', 'img_id');

    div2.appendChild(img);

    addPaintingElementTimingAfterDoubleRAF(document.body);

  }, 'Paint of the image child of container timing with ignore in the middle is not reported.');

</script>

</body>