| <!DOCTYPE html> |
| <script src="../../resources/testharness.js"></script> |
| <script src="../../resources/testharnessreport.js"></script> |
| <iframe id="frame"></iframe> |
| <script> |
| async_test(function(t) { |
| onload = t.step_func(() => { |
| const host = document.createElement("div"); |
| frame.appendChild(host); |
| frame.contentDocument.body.innerHTML = "<dialog></dialog>"; |
| document.body.offsetTop; |
| const root = host.attachShadow({mode: 'open'}); |
| root.innerHTML = "<content>"; |
| const dialog = frame.contentDocument.querySelector("dialog"); |
| dialog.showModal(); |
| t.done(); |
| }); |
| }, "Dialog.showModal() called when we have a dirty shadow distribution should not crash."); |
| </script> |
