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<!DOCTYPE html>
<meta charset="utf-8">
<link rel="help" href="https://drafts.csswg.org/css-scroll-anchoring-1/">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<style>
#scroller {
height: 200px;
overflow: scroll;
}
#before { height: 50px; }
#table-row {
display: table-row;
overflow-anchor: none;
width: 100px;
height: 100px;
}
#after { margin-bottom: 500px; }
</style>
<div id="scroller">
<div id="before"></div>
<div id="table-row">content</div>
<div id="after"></div>
</div>
<script>
// Tests that the anchor exclusion API works with table parts that generate
// anonymous table box wrappers
test(() => {
let scroller = document.querySelector('#scroller');
let before = document.querySelector('#before');
// Scroll down so that #table-row is the only element in view
scroller.scrollTop = 50;
// Expand #before so that we might perform a scroll adjustment
before.style.height = "100px";
// We shouldn't have selected #table-row as an anchor as it is
// 'overflow-anchor: none'
assert_equals(scroller.scrollTop, 50);
}, "A table with anonymous wrappers and 'overflow-anchor: none' shouldn't generate any scroll anchor candidates.");
</script>
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