chromium/third_party/blink/web_tests/external/wpt/shadow-dom/event-dispatch-order.tentative.html

<!DOCTYPE html>
<title>Shadow DOM: event dispatch order for capture and non-capture listerns at a shadow host</title>
<meta name="author" title="Hayato Ito" href="mailto:[email protected]">
<link rel="help" href="https://github.com/whatwg/dom/issues/685">
<link rel="help" href="https://github.com/whatwg/dom/pull/686">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="resources/shadow-dom.js"></script>
<div id=host>
  <template id=shadowroot data-mode=open>
    <div id=target></div>
  </template>
</div>
<script>
test(() => {
  let nodes = createTestTree(host);
  let log = dispatchEventWithLog(nodes, nodes.target,
                                 new Event('my-event', { bubbles: true, composed: true }),
                                 { capture: true });
  let path = ['target', 'shadowroot', 'host'];
  assert_event_path_equals(log,
                           [['host', 'host', null, path, 'capture'],
                            ['shadowroot', 'target', null, path, 'capture'],
                            ['target', 'target', null, path, 'capture'],
                            ['target', 'target', null, path, 'non-capture'],
                            ['shadowroot', 'target', null, path, 'non-capture'],
                            ['host', 'host', null, path, 'non-capture'],
                           ]);
}, 'Event dispatch order: capture listerns should be called in capturing phase at a shadow host');
</script>