| <!DOCTYPE html> |
| <link rel=author href="mailto:jarhar@chromium.org"> |
| <link rel=author href="mailto:skobes@chromium.org"> |
| <link rel=help href="https://html.spec.whatwg.org/multipage/interactive-elements.html#the-dialog-element"> |
| <link rel=help href="https://bugs.chromium.org/p/chromium/issues/detail?id=403136"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| |
| <style> |
| body { |
| margin: 0; |
| } |
| .spacer { |
| height: 500px; |
| } |
| dialog { |
| border: 0; |
| margin: 0; |
| padding: 1px; |
| } |
| </style> |
| <div class="spacer"></div> |
| <dialog> |
| <div class="spacer"></div> |
| </dialog> |
| |
| <script> |
| test(() => { |
| document.querySelector('dialog').showModal(); |
| assert_equals(document.scrollingElement.scrollHeight, 600); |
| }, 'dialogs should be centered before computing overflow.'); |
| </script> |
