| <!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> |
