event-composed.html

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This WPT test may be referenced by the following Test IDs:
- /shadow-dom/event-composed.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<title>Shadow DOM: Event composed</title>

<meta name="author" title="Hayato Ito" href="mailto:hayato@google.com">

<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(() => {

  const e = new Event('test');

  assert_equals(e.composed, false);

}, 'A new events composed value should be set to false by default.');

test(() => {

  const e = new Event('test', { composed: true });

  assert_equals(e.composed, true);

}, 'Users should be able to set a composed value.');

function assertScoped(event) {

  let nodes = createTestTree(host);

  let log = dispatchEventWithLog(nodes, nodes.target, event);

  let expectedPath = ['target', 'shadowRoot'];

  assert_event_path_equals(log,

                           [['target', 'target', null, expectedPath],

                            ['shadowRoot', 'target', null, expectedPath]]);

function assertComposed(event) {

  let nodes = createTestTree(host);

  let log = dispatchEventWithLog(nodes, nodes.target, event);

  let expectedPath = ['target', 'shadowRoot', 'host'];

  assert_event_path_equals(log,

                           [['target', 'target', null, expectedPath],

                            ['shadowRoot', 'target', null, expectedPath],

                            ['host', 'host', null, expectedPath]]);

test(() => {

  assertScoped(new Event('test', { bubbles: true }));

}, 'An event should be scoped by default');

test(() => {

  assertComposed(new Event('test', { bubbles: true, composed: true }));

}, 'An event should not be scoped if composed is specified');

test(() => {

  assertScoped(new MouseEvent('click', { bubbles: true }));

}, 'A synthetic MouseEvent should be scoped by default');

test(() => {

  assertComposed(new MouseEvent('click', { bubbles: true, composed: true }));

}, 'A synthetic MouseEvent with composed=true should not be scoped');

test(() => {

  assertScoped(new FocusEvent('focus', { bubbles: true }));

}, 'A synthetic FocusEvent should be scoped by default');

test(() => {

  assertComposed(new FocusEvent('focus', { bubbles: true, composed: true }));

}, 'A synthetic FocusEvent with composed=true should not be scoped');

function assertUAComposed(eventType, callback) {

  let nodes = createTestTree(host);

  let log = dispatchUAEventWithLog(nodes, nodes.target, eventType, callback);

  let expectedPath = ['target', 'shadowRoot', 'host'];

  assert_event_path_equals(log,

                           [['target', 'target', null, expectedPath],

                            ['shadowRoot', 'target', null, expectedPath],

                            ['host', 'host', null, expectedPath]]);

test(() => {

  assertUAComposed('click', (target) => { target.click(); });

}, 'A UA click event should not be scoped');

// TODO(hayato): Test other UIEvents.

</script>