| <!DOCTYPE> |
| <html> |
| <style> |
| summary::first-letter { |
| background: grey; |
| } |
| html { |
| -webkit-user-modify: read-write-plaintext-only; |
| min-inline-size: min-content; |
| writing-mode: vertical-lr; |
| } |
| video { |
| float: left; |
| inline-size: 10%; |
| } |
| div { |
| border-block-start-style: ridge; |
| padding-top: 100%; |
| height: 10px; |
| } |
| </style> |
| <script> |
| if (window.testRunner) |
| window.testRunner.dumpAsText(); |
| onload = () => { |
| let summary0 = document.createElement('summary'); |
| document.documentElement.appendChild(summary0); |
| let video0 = document.createElement('video'); |
| summary0.appendChild(video0); |
| let div0 = document.createElement('div'); |
| document.documentElement.append(div0); |
| video0.controls = true; |
| getSelection().selectAllChildren(summary0); |
| summary0.append('foo'); |
| getSelection().modify('move', 'left', 'line'); |
| document.write("Test passes if it does not crash."); |
| }; |
| </script> |
