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Test Info:
- This WPT test may be referenced by the following Test IDs:
- /css/css-layout-api/fallback-intrinsic-sizes/unresolved-promise.https.html - WPT Dashboard Interop Dashboard
<!DOCTYPE html>
<html class=reftest-wait>
<link rel="help" href="https://drafts.css-houdini.org/css-layout-api/#invoke-an-intrinsic-sizes-callback">
<link rel="match" href="fallback-ref.html">
<meta name="assert" content="This test checks that a layout() class with an intrinsicSizes function that doesn't return a promise will fallback to block layout." />
<style>
.test {
background: red;
border: solid 2px;
width: min-content;
}
.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 {
intrinsicSizes() { return new Promise(() => { /* never resolves */ }); }
async layout() {}
});
</script>
<script>
importWorkletAndTerminateTestAfterAsyncPaint(CSS.layoutWorklet, document.getElementById('code').textContent);
</script>
</html>