calculate-depth-for-node.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:
- /resize-observer/calculate-depth-for-node.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

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

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

<link rel="help" href="https://drafts.csswg.org/resize-observer/#calculate-depth-for-node">

<body>

<div id="host"></div>

<script>

let didSeeError = false;

window.onerror = (message, source, lineno, colno, error) => {

  didSeeError = true;

async_test(t => {

  let host = document.querySelector('#host');

  let observer = new ResizeObserver(t.step_func(() => {

    let root = host.attachShadow({mode:'open'});

    let child = root.appendChild(document.createElement('div'));

    new ResizeObserver(() => {}).observe(child);

    requestAnimationFrame(t.step_func_done(() => { assert_false(didSeeError); }));

  }));

  observer.observe(host);

}, '"Calculate depth for node" algorithm with Shadow DOM');

</script>

</body>