available-block-size-invalid.https.html

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This WPT test may be referenced by the following Test IDs:
- /css/css-layout-api/child-constraints/available-block-size-invalid.https.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<html class=reftest-wait>

<link rel="help" href="https://drafts.css-houdini.org/css-layout-api/#dom-layoutconstraintsoptions-availableblocksize">

<link rel="match" href="../green-square-ref.html">

<meta name="assert" content="This test checks that setting an invalid available block-size works as expected." />

<style>

.test {

  writing-mode: horizontal-tb;

  background: red;

  width: 100px;

.child {

  writing-mode: vertical-rl;

  visibility: hidden;

  line-height: 0;

  --available-block-size: -20;

.inline {

  display: inline-block;

  width: 8px;

.inline-size-10 { height: 10px; }

@supports (display: layout(test)) {

  .test {

    background: green;

    display: layout(test);

</style>

<script src="/common/reftest-wait.js"></script>

<script src="/common/worklet-reftest.js"></script>

<div class="test">

  <!-- The invalid available block-size should be clamped to zero. -->

  <div class="child" style="--block-size-expected: 10; --inline-size-expected: 16;">

    <span class="inline inline-size-10"></span>

    <span class="inline inline-size-10"></span>

  </div>

</div>

<script>

importWorkletAndTerminateTestAfterAsyncPaint(CSS.layoutWorklet, {url: 'support/layout-child-sizes-worklet.js'});

</script>