gecko-dev/testing/web-platform/tests/css/css-layout-api/constraints-data-sab-failure.https.html
Anne van Kesteren 89254b8078 Bug 1623924 [wpt PR 22359] - XHR/CSS/Compression: use Wasm to get at a SharedArrayBuffer instancd, a=testonly
Automatic update from web-platform-tests
XHR/CSS/Compression: use Wasm to get at a SharedArrayBuffer instance

For https://github.com/web-platform-tests/wpt/issues/22358.
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wpt-commits: c8d8f8e2d426e71c11f86512fadd5d8744413c13
wpt-pr: 22359
2020-03-31 11:30:44 +00:00

62 lines
1.6 KiB
HTML

<!DOCTYPE html>
<html class=reftest-wait>
<link rel="help" href="https://drafts.css-houdini.org/css-layout-api/#dom-layoutconstraints-data">
<link rel="match" href="green-square-ref.html">
<meta name="assert" content="This test checks that a SharedArrayBuffer can't be passed to a child layout." />
<style>
.test {
background: red;
width: 100px;
}
@supports (display: layout(parent)) {
.test {
display: layout(parent);
background: green;
}
.child {
display: layout(child);
}
}
</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('parent', class {
async intrinsicSizes() {}
async layout([child], edges, constraints, styleMap) {
let childFragment = null;
try {
childFragment = await child.layoutNextFragment({
// See https://github.com/whatwg/html/issues/5380 for why not `new SharedArrayBuffer()`
data: { sab: new WebAssembly.Memory({ shared:true, initial:1, maximum:1 }).buffer }
});
} catch(e) {
// Success! The structured cloning algorithm should have thrown an error.
childFragment = await child.layoutNextFragment({});
return {autoBlockSize: 100, childFragments: [childFragment]};
}
return {autoBlockSize: 0, childFragments: [childFragment]};
}
});
registerLayout('child', class {
async intrinsicSizes() {}
async layout() {
return {autoBlockSize: 0};
}
});
</script>
<script>
importWorkletAndTerminateTestAfterAsyncPaint(CSS.layoutWorklet, document.getElementById('code').textContent);
</script>
</html>