not-broken-while-load-task-scheduled.html

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This test has a WPT meta file that expects 2 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /html/semantics/embedded-content/the-img-element/update-the-image-data/not-broken-while-load-task-scheduled.html - WPT Dashboard Interop Dashboard

<!doctype html>

<title>Image shouldn't be broken while load task is scheduled.</title>

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

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

<body>

<script>

async function run_test(prop) {

  let img = new Image();

  img.width = 50;

  img.height = 50;

  img.alt = "Anything non-empty";

  img[prop] = `/images/green.png?not-broken-while-load-task-scheduled-` + Math.random();

  let load = new Promise(r => img.addEventListener("load", r, { once: true }));

  document.body.appendChild(img);

  assert_equals(img.clientWidth, 50, "clientWidth");

  assert_equals(img.clientHeight, 50, "clientHeight");

  assert_equals(getComputedStyle(img).height, "50px", "Computed height");

  assert_equals(getComputedStyle(img).width, "50px", "Computed height");

  await load;

  assert_equals(img.clientWidth, 50, "clientWidth");

  assert_equals(img.clientHeight, 50, "clientHeight");

  assert_equals(getComputedStyle(img).height, "50px", "Computed height");

  assert_equals(getComputedStyle(img).width, "50px", "Computed height");

promise_test(() => run_test("src"));

promise_test(() => run_test("srcset"));

</script>