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<!DOCTYPE html>
<meta charset="utf-8">
<title>contain-intrinsic-width: auto none in vertical writing mode</title>
<link rel="author" title="Rob Buis" href="mailto:rbuis@igalia.com">
<link rel="help" href="https://drafts.csswg.org/css-sizing-4/#intrinsic-size-override">
<meta name="assert" content="Tests that 'contain-intrinsic-width: auto none' respects the auto keyword in vertical writing mode">
<style>
#target {
width: max-content;
height: max-content;
}
.cis-auto {
contain-intrinsic-width: auto none;
}
.skip-contents {
content-visibility: hidden;
}
.size-100-50 {
inline-size: 100px;
block-size: 50px;
}
.size-75-25 {
inline-size: 75px;
block-size: 25px;
}
.vertical {
writing-mode: vertical-lr;
}
</style>
<div id="log"></div>
<div id="parent">
<div id="target">
<div id="contents"></div>
</div>
</div>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
const parent = document.getElementById("parent");
const target = document.getElementById("target");
const contents = document.getElementById("contents");
function checkSize(expectedWidth, expectedHeight, msg) {
assert_equals(target.clientWidth, expectedWidth, msg + " - clientWidth");
assert_equals(target.clientHeight, expectedHeight, msg + " - clientHeight");
}
function nextRendering() {
return new Promise(resolve => {
requestAnimationFrame(() => requestAnimationFrame(() => resolve()));
});
}
function cleanup() {
parent.className = "";
target.className = "";
contents.className = "";
checkSize(0, 0, "Sizing after cleanup");
}
promise_test(async function() {
this.add_cleanup(cleanup);
parent.classList.add("vertical");
target.className = "cis-auto skip-contents";
contents.classList.add("size-100-50");
checkSize(0, 0, "Size containment with no last remembered width");
target.classList.remove("skip-contents");
checkSize(50, 100, "Sizing normally");
await nextRendering();
target.classList.add("skip-contents");
checkSize(50, 0, "Using last remembered width");
contents.classList.remove("size-100-50");
contents.classList.add("size-75-25");
checkSize(50, 0, "Still using last remembered width");
target.classList.remove("skip-contents");
checkSize(25, 75, "Sizing normally with different size");
target.classList.add("skip-contents");
checkSize(50, 0, "Going back to last remembered width");
target.classList.remove("skip-contents");
await nextRendering();
target.classList.add("skip-contents");
checkSize(25, 0, "Using the new last remembered width");
}, "Basic usage");
</script>
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