character-data-append.html

Enable keyboard shortcuts

This WPT test may be referenced by the following Test IDs:
- /soft-navigation-heuristics/icp/tentative/character-data-append.html - WPT Dashboard Interop Dashboard

<!DOCTYPE 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="/soft-navigation-heuristics/resources/soft-navigation-test-helper.js"></script>

<div id="target">Initial Text</div>

<button id="testButton">Click Me!</button>

<script>

  promise_test(async t => {

    testButton.addEventListener('click', () => {

      const textNode = target.childNodes[0];

      textNode.appendData(' and Appended Text');

    }, {once: true});

    const icpPromise = new SoftNavigationTestHelper(t).waitForIcp();

    if (test_driver) {

      test_driver.click(testButton);

    const icps = await icpPromise;

    assert_equals(icps.length, 1, 'Expected exactly one ICP entry');

    assert_equals(

        icps[0].largestContentfulPaint.id, 'target',

        'Expected the LCP element to be "target"');

  }, 'InteractionContentfulPaint supports CharacterData.appendData');

</script>