polygerrit-ui/app/elements/edit/gr-default-editor/gr-default-editor_test.html

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<meta name="viewport" content="width=device-width, minimum-scale=1.0, initial-scale=1.0, user-scalable=yes">
<title>gr-default-editor</title>
<script src="/test/common-test-setup.js"></script>
<script src="/bower_components/webcomponentsjs/custom-elements-es5-adapter.js"></script>

<script src="/bower_components/webcomponentsjs/webcomponents-lite.js"></script>
<script src="/bower_components/web-component-tester/browser.js"></script>
<link rel="import" href="../../../test/common-test-setup.html"/>

<link rel="import" href="gr-default-editor.html">

<script>void(0);</script>

<test-fixture id="basic">
  <template>
    <gr-default-editor></gr-default-editor>
  </template>
</test-fixture>

<script>
  suite('gr-default-editor tests', () => {
    let element;

    setup(() => {
      element = fixture('basic');
      element.fileContent = '';
    });

    test('fires content-change event', done => {
      const contentChangedHandler = e => {
        assert.equal(e.detail.value, 'test');
        done();
      };
      const textarea = element.$.textarea;
      element.addEventListener('content-change', contentChangedHandler);
      textarea.value = 'test';
      textarea.dispatchEvent(new CustomEvent('input',
          {target: textarea, bubbles: true, composed: true}));
    });
  });
</script>