wpt / css / css-shadow / has-slotted-query-selector.html

Status: FAIL | Duration: 47ms | Subtests: 0/1 | Open test on wpt.live | wpt.fyi

TestTest Source

/css/css-shadow/has-slotted-query-selector.html

<!doctype html>
<meta charset="utf-8" />
<title>:has-slotted and query-selector</title>
<link rel="help" href="https://github.com/w3c/csswg-drafts/pull/10586" />
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div id="ancestor"><template shadowrootmode="open"><div id="host"><template shadowrootmode="open"><style>
  slot {
    color: rgb(0, 0, 0);
  }
  :has-slotted {
    color: rgb(0, 255, 0);
  }
</style><slot></slot></template><slot></slot></div></template></div>
<script>
  const host = ancestor.shadowRoot.querySelector('#host');
  for(const container of [host, ancestor]) {
    host.replaceChildren(document.createElement('slot'));
    ancestor.replaceChildren();
    const slot = host.shadowRoot.querySelector("slot");

    test(function () {
      assert_equals(slot.assignedNodes({flatten: true}).length, 0, "slot should have 0 nodes");
      assert_false(slot.matches(":has-slotted"), "slot element should not match :has-slotted");
      assert_equals(getComputedStyle(slot).color, "rgb(0, 0, 0)", "slot element should not match :has-slotted");
      assert_equals(host.shadowRoot.querySelectorAll(":has-slotted").length, 0, "slot element should not match :has-slotted");
    }, ":has-slotted does not match or querySelector when there are no assigned nodes" + (container == ancestor ? " (flattened)" : ""));

    test(function () {
      container.append(document.createElement("div"));
      assert_equals(slot.assignedNodes({flatten: true}).length, 1, "slot should have 1 node");
      assert_true(slot.matches(":has-slotted"), "slot element should match :has-slotted with 1 child node");
      assert_equals(getComputedStyle(slot).color, "rgb(0, 255, 0)", "slot element should match :has-slotted with 1 child node");
      assert_equals(host.shadowRoot.querySelectorAll(":has-slotted").length, 1, "slot element should match :has-slotted with 1 child node");
    }, ":has-slotted must match/querySelector when an element is assigned" + (container == ancestor ? " (flattened)" : ""));

    test(function () {
      container.replaceChildren();
      assert_equals(slot.assignedNodes({flatten: true}).length, 0, "slot should have 0 nodes");
      assert_false(slot.matches(":has-slotted"), "slot element should not match :has-slotted after empty");
      assert_equals(getComputedStyle(slot).color, "rgb(0, 0, 0)", "slot element should not match :has-slotted after empty");
      assert_equals(host.shadowRoot.querySelectorAll(":has-slotted").length, 0, "slot element should not match :has-slotted after empty");
    }, ":has-slotted does not when child nodes are replaced" + (container == ancestor ? " (flattened)" : ""));

    test(function () {
      container.append(document.createTextNode(""));
      assert_equals(slot.assignedNodes({flatten: true}).length, 1, "slot should have 1 node");
      assert_true(slot.matches(":has-slotted"), "slot element should match :has-slotted with 1 text node");
      assert_equals(getComputedStyle(slot).color, "rgb(0, 255, 0)", "slot element should match :has-slotted with 1 text node");
      assert_equals(host.shadowRoot.querySelectorAll(":has-slotted").length, 1, "slot element should match :has-slotted with 1 text node");
    }, ":has-slotted must match/querySelector when a text node is assigned" + (container == ancestor ? " (flattened)" : ""));
  }
</script>