selection-nested-video.html

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This WPT test may be referenced by the following Test IDs:
- /selection/selection-nested-video.html - WPT Dashboard Interop Dashboard

<!doctype html>

<meta charset=utf-8>

<title>Selection with nested videos doesn't crash</title>

<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1887963">

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

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

<script>

async_test(t => {

  document.addEventListener("DOMContentLoaded", () => {

    let c = a.attachShadow({mode: "open"});

    const sel = window.getSelection();

    sel.setBaseAndExtent(b, 0, c, 0);

    assert_equals(sel.anchorNode, b);

    assert_equals(sel.anchorOffset, 0);

    assert_equals(sel.focusNode, b);

    assert_equals(sel.focusOffset, 0);

    t.done();

})

}, 'selection have the same anchor and focus nodes because b and c are in different tree scopes.');

</script>

<div id="a">A</div>

<video>

  <video id="b"></video>

</video>