| <!DOCTYPE html> |
| <html class=reftest-wait> |
| <link rel="help" href="https://drafts.css-houdini.org/css-layout-api/#invoke-a-layout-callback"> |
| <link rel="match" href="fallback-layout-fallback-ref.html"> |
| <meta name="assert" content="This test checks that a layout() class with a layout function that doesn't return a promise will fallback to block layout." /> |
| <style> |
| .test { |
| background: red; |
| border: solid 2px; |
| width: 100px; |
| } |
| |
| .child { |
| height: 100px; |
| } |
| |
| @supports (display: layout(unresolved-promise)) { |
| .test { |
| display: layout(unresolved-promise); |
| background: green; |
| } |
| } |
| </style> |
| <script src="/common/reftest-wait.js"></script> |
| <script src="/common/worklet-reftest.js"></script> |
| |
| <div class="test"> |
| <div class="child"></div> |
| </div> |
| |
| <script id="code" type="text/worklet"> |
| registerLayout('unresolved-promise', class { |
| async intrinsicSizes() {} |
| layout() { return new Promise(() => { /* never resolves */ }); } |
| }); |
| </script> |
| |
| <script> |
| importWorkletAndTerminateTestAfterAsyncPaint(CSS.layoutWorklet, document.getElementById('code').textContent); |
| </script> |
| </html> |
