| <!DOCTYPE html> |
| <link rel=author href="mailto:jarhar@chromium.org"> |
| <link rel=help href="https://github.com/whatwg/html/pull/9142"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| |
| <dialog>hello</dialog> |
| |
| <script> |
| test(() => { |
| const dialog = document.querySelector('dialog'); |
| |
| // calling close() on a dialog that is already closed should not throw. |
| dialog.close(); |
| |
| dialog.show(); |
| // calling show() on a dialog that is already showing non-modal should not throw. |
| dialog.show(); |
| assert_throws_dom('InvalidStateError', () => dialog.showModal(), |
| 'Calling showModal() on a dialog that is already showing non-modal should throw.'); |
| dialog.close(); |
| |
| dialog.showModal(); |
| assert_throws_dom('InvalidStateError', () => dialog.show(), |
| 'Calling show() on a dialog that is already showing modal should throw.'); |
| // calling showModal() on a dialog that is already showing modal should not throw. |
| dialog.showModal(); |
| }); |
| </script> |
