<!DOCTYPE html>
<title>CSS Overflow Test: ::scroll-button and ::scroll-marker pseudo-elements are not present in event path</title>
<link rel="help" href="https://drafts.csswg.org/css-overflow-5/#scroll-buttons">
<link rel="help" href="https://drafts.csswg.org/css-overflow-5/#scroll-marker">
<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 {
    height: 100px;
    width: 100px;
    overflow: scroll;
    scroll-marker-group: before;
  }

  #scroller::scroll-marker-group {
    height: 10px;
  }

  #target {
    height: 100px;
    width: 200px;
  }

  #scroller::scroll-button(right) {
    content: "";
    height: 10px;
    width: 10px;
  }

  #target::scroll-marker {
    content: "";
    height: 10px;
    width: 10px;
    display: block;
  }
</style>
<div id="scroller">
  <div id="target"></div>
</div>
<script>
  const scrollButtonHalfHeight = 5;
  const scrollButtonHalfWidth = 5;
  const scrollMarkerHalfHeight = 5;
  const scrollMarkerHalfWidth = 5;
  const scrollerBottom = scroller.getBoundingClientRect().bottom;

  let scrollerActualEventPath = null;
  scroller.addEventListener("click", (e) => {
    scrollerActualEventPath = e.composedPath();
  });

  const scrollerExpectedEventPath = [scroller, document.body, document.documentElement, document, window];
  promise_test(async t => {
    // Click on the ::scroll-button pseudo-element.
    const scrollButtonX = scrollButtonHalfWidth;
    const scrollButtonY = scrollerBottom + scrollButtonHalfHeight;
    await new test_driver.Actions()
      .pointerMove(scrollButtonX, scrollButtonY)
      .pointerDown()
      .pointerUp()
      .send();
    assert_array_equals(scrollerActualEventPath, scrollerExpectedEventPath, "::scroll-button pseudo-element should not be in the event path");
  });

  let targetActualEventPath = null;
  target.addEventListener("click", (e) => {
    targetActualEventPath = e.composedPath();
  });

  const targetExpectedEventPath = [target, scroller, document.body, document.documentElement, document, window];
  promise_test(async t => {
    // Click on the ::scroll-marker pseudo-element.
    const scrollMarkerX = scrollMarkerHalfWidth;
    const scrollMarkerY = scrollMarkerHalfHeight;
    await new test_driver.Actions()
      .pointerMove(scrollMarkerX, scrollMarkerY)
      .pointerDown()
      .pointerUp()
      .send();
    assert_array_equals(targetActualEventPath, targetExpectedEventPath, "::scroll-marker pseudo-element should not be in the event path");
  });
</script>