child-display-none.tentative.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:
- /lifecycle/child-display-none.tentative.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<meta charset="utf-8">

<title>Child frame marked as frozen</title>

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

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

<body>

<script>

async_test((t) => {

  var child = document.createElement('iframe');

  var loaded = false;

  var frozen = false;

  window.addEventListener('message', t.step_func((e) => {

    if (e.data == "load") {

      loaded = true;

    } else if (e.data == "freeze") {

      assert_true(loaded);

      frozen = true;

      child.style = "display: block";

    } else if (e.data == "resume") {

      assert_true(loaded);

      assert_true(frozen);

      t.done();

  }));

  child.allow = "execution-while-not-rendered 'none'";

  child.src = "resources/subframe.html";

  document.body.appendChild(child);

  child.style = "display: none";

}, "Child frame frozen");

</script>

</body>