event-retarget.html

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This test has a WPT meta file that expects 1 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /event-timing/event-retarget.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<html>

<meta charset=utf-8 />

<script src=/resources/testharness.js></script>

<script src=/resources/testharnessreport.js></script>

<script src=/resources/testdriver.js></script>

<script src=/resources/testdriver-vendor.js></script>

<script src=resources/event-timing-test-utils.js></script>

<custom-button id='custom_button'></custom-button>

<script>

async_test(function(t) {

  assert_implements(window.PerformanceEventTiming, 'Event Timing is not supported.');

  let innerButtonClicked = false;

  customElements.define('custom-button', class extends HTMLElement {

    connectedCallback() {

      this.attachShadow({mode: 'open'});

      this.shadowRoot.innerHTML = `<button id='inner_button_id'>Click me</button>`;

      this.shadowRoot.getElementById('inner_button_id').onclick = () => {

        innerButtonClicked = true;

};

});

  const observer = new PerformanceObserver(t.step_func((entryList) => {

    const entries = entryList.getEntriesByName('pointerdown');

    if (entries.length === 0)

      return;

    // There must only be one pointerdown entry.

    assert_equals(entries.length, 1);

    verifyClickEvent(entries[0], 'custom_button', true);

    assert_true(innerButtonClicked);

    t.done()

  }));

  observer.observe({entryTypes: ['event']});

  clickAndBlockMain('custom_button');

}, "Event Timing: target reports the last Event Target, i.e. nothing from shadow DOM.");

</script>

</html>