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<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Overflow Test: ::scroll-marker activation scrolls into view with `start` as default direction position</title>
<link rel="help" href="https://drafts.csswg.org/css-overflow-5/#scroll-marker-activation">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-actions.js"></script>
<script src="/resources/testdriver-vendor.js"></script>
<style>
.toc {
overflow: auto;
overscroll-behavior: contain;
height: 50vh;
scroll-marker-group: before links;
counter-reset: --section;
padding-left: 200px;
&::scroll-marker-group {
position: absolute;
width: 200px;
}
& h3 {
counter-increment: --section;
&::scroll-marker {
font-size: 1rem;
display: block;
content: counter(--section) ". " attr(data-label);
}
&::scroll-marker:target-current {
color: ActiveText;
}
}
}
</style>
<div id="scroller" class="toc">
<h3 data-label="Introduction">Introduction</h3>
<p>Lorem ipsum</p>
<p>Lorem ipsum</p>
<h3 data-label="Focus">Focus Behavior</h3>
<p>Lorem ipsum</p>
<p>Lorem ipsum</p>
<p>Lorem ipsum</p>
<p>Lorem ipsum</p>
<h3 data-label="Roles">Roles</h3>
<p>Lorem ipsum</p>
<p>Lorem ipsum</p>
<p>Lorem ipsum</p>
<p>Lorem ipsum</p>
<p>Lorem ipsum</p>
<p>Lorem ipsum</p>
</div>
<script>
promise_test(async t => {
const secondScrollMarkerX = 34;
const secondScrollMarkerY = 37;
actions_promise = new test_driver.Actions()
.pointerMove(secondScrollMarkerX, secondScrollMarkerY)
.pointerDown()
.pointerUp()
.send();
await actions_promise;
assert_not_equals(scroller.scrollTop, 0, "scroll marker activation should scroll into view with `start` as direction position");
});
</script>
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