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<!DOCTYPE html>
<meta charset="utf-8">
<title>Tests getComputedStyle() for inset properties using position-area</title>
<link rel="help" href="https://drafts.csswg.org/css-anchor-position-1">
<link rel="help" href="https://drafts.csswg.org/cssom/#resolved-value">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<style>
#container {
position: relative;
width: 300px;
height: 300px;
}
#anchor {
anchor-name: --a;
margin-left: 80px;
margin-top: 130px;
width: 100px;
height: 100px;
}
.anchored {
position: absolute;
position-anchor: --a;
position-area: center center;
}
#t1 {
inset: 10px;
}
#t2 {
inset: auto;
}
</style>
<div id="container">
<div id="anchor"></div>
<div id="t1" class="anchored"></div>
<div id="t2" class="anchored"></div>
</div>
<script>
test(() => {
const style = getComputedStyle(t1);
assert_equals(style.top, "10px");
assert_equals(style.left, "10px");
assert_equals(style.bottom, "10px");
assert_equals(style.right, "10px");
}, "position-area does not affect resolved inset properties");
test(() => {
const style = getComputedStyle(t2);
assert_equals(style.top, "0px");
assert_equals(style.left, "0px");
assert_equals(style.bottom, "0px");
assert_equals(style.right, "0px");
}, "'auto' inset properties resolve to 0px when position-area is non-initial");
</script>
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