css/css-pseudo/marker-hit-testing.html

<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Pseudo-Elements Test: Hit testing ::marker</title>
<link rel="help" href="https://drafts.csswg.org/css-pseudo-4/#marker-pseudo">
<link rel="author" title="Oriol Brufau" href="mailto:obrufau@igalia.com">
<meta name="assert" content="This test checks that hit-testing a ::marker, the APIs provide the nearest element ancestor." />
<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
<style>
ol {
  display: inline-block;
  padding-left: 100px;
}
li {
  font: 50px/100px Ahem;
  width: 50px;
}
.inside {
  list-style-position: inside;
}
.image {
  list-style-image: url("/images/green-100x50.png");
}
.string {
  list-style-type: "X";
}
.marker::marker {
  content: "X";
}
.nested {
  display: block;
}
.nested::before {
  content: '';
  display: list-item;
}
</style>
<!-- The <li> are 50px wide, and the ::marker are at least 50px wide.
     Since they are outside, try to locate them at -40px to the left of
     the <li>, i.e. -65px from the center of the <li> -->
<ol class="outside" data-x="-65">
  <li class="image"></li>
  <li class="string"></li>
  <li class="marker"></li>
  <li class="nested image"></li>
  <li class="nested string"></li>
</ol>
<!-- The <li> are 50px wide, and the inside ::marker are at least 50px,
     so locate them at the horizontal center of the <li> -->
<ol class="inside" data-x="0">
  <li class="image"></li>
  <li class="string"></li>
  <li class="marker"></li>
  <li class="nested image"></li>
  <li class="nested string"></li>
</ol>
<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>
<script>
function check(event, li) {
  assert_equals(event.target, li, "event.target");
  if (event.path) {
    assert_equals(event.path[0], li, "event.path");
  }
  const el = document.elementFromPoint(event.clientX, event.clientY);
  assert_equals(el, li, "elementFromPoint");
}
setup({ explicit_done: true });
addEventListener("load", async function() {
  for (let list of document.querySelectorAll("ol")) {
    for (let li of list.querySelectorAll("li")) {
      const listener = e => check(e, li);
      async_test(function(t) {
        document.addEventListener("mousedown", t.step_func_done(listener));
      }, list.className + " " + li.className + " ::marker's content");
      async_test(function(t) {
        document.addEventListener("mouseup", t.step_func_done(listener));
      }, list.className + " " + li.className + " ::marker");
      await new test_driver.Actions()
        // Send an event at the vertical middle of the <li>, this should
        // hit the contents of the ::marker
        .pointerMove(+list.dataset.x, 0, {origin: li})
        .pointerDown()
        // The ::marker is 100px tall but its contents only 50px tall.
        // Send an event inside the ::marker but above its contents.
        .pointerMove(+list.dataset.x, -40, {origin: li})
        .pointerUp()
        .send();
    }
  }
  done();
});
</script>