scroll-marker-group-hover.html

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This test has a WPT meta file that expects 1 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /css/css-overflow/scroll-marker-group-hover.html - WPT Dashboard Interop Dashboard

<!doctype html>

<meta charset="utf-8">

<title>CSS Overflow Test: ::scroll-marker-group supports hover</title>

<link rel="help" href="https://drafts.csswg.org/css-overflow-5/#scroll-marker-group-pseudo">

<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>

  body {

    margin: 0;

  #scroller {

    overflow: auto;

    scroll-marker-group: before;

    &::scroll-marker-group {

      background: red;

      height: 100px;

      width: 100px;

    &::scroll-marker-group:hover {

      background: green;

</style>

<div id="scroller"></div>

<script>

  promise_test(async t => {

    assert_equals(getComputedStyle(scroller, "::scroll-marker-group").backgroundColor, "rgb(255, 0, 0)", "::scroll-marker-group is unhovered");

    const watcher = new EventWatcher(t, scroller, 'mouseover');

    const waitMouseover = watcher.wait_for('mouseover');

    await new test_driver.Actions()

      .pointerMove(15, 15)

      .send();

    await waitMouseover;

    assert_equals(getComputedStyle(scroller, "::scroll-marker-group").backgroundColor, "rgb(0, 128, 0)", "::scroll-marker-group is hovered");

});

</script>