edit-context-undo-redo.tentative.html

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This WPT test may be referenced by the following Test IDs:
- /editing/edit-context/edit-context-undo-redo.tentative.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<html>

<head>

<title>EditContext: Firing beforeinput for undo and redo.</title>

<link rel="help" href="https://github.com/w3c/edit-context/issues/153">

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

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

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

<script src="/resources/testdriver-actions.js"></script>

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

<script src="/editing/include/editor-test-utils.js"></script>

</head>

<body>

<div></div>

<script>

'use strict';

const host = document.querySelector('div');

let beforeInput;

host.addEventListener('beforeinput', e => beforeInput = e);

const utils = new EditorTestUtils(host);

promise_test(async () => {

  const editContext = host.editContext = new EditContext();

  host.focus();

  await test_driver.send_keys(host, 'hello');

  await utils.sendUndoShortcutKey();

  assert_equals(beforeInput.inputType, 'historyUndo',

    'Should fire historyUndo beforeinput.');

  assert_equals(editContext.text, 'hello',

    'Undo should not change EditContext text.');

}, 'Undo in EditContext.');

promise_test(async () => {

  const editContext = host.editContext = new EditContext();

  host.focus();

  await test_driver.send_keys(host, 'hello');

  await utils.sendRedoShortcutKey();

  assert_equals(beforeInput.inputType, 'historyRedo',

    'Should fire historyRedo beforeinput.');

  assert_equals(editContext.text, 'hello',

    'Redo should not change EditContext text.');

}, 'Redo in EditContext.');

</script>

</body>

</html>