| <!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> |
