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<meta name="viewport" content="width=device-width, minimum-scale=1.0, initial-scale=1.0, user-scalable=yes">
<title>dom-util-behavior</title>

<script src="/node_modules/@webcomponents/webcomponentsjs/custom-elements-es5-adapter.js"></script>

<script src="/node_modules/@webcomponents/webcomponentsjs/webcomponents-lite.js"></script>
<script src="/components/wct-browser-legacy/browser.js"></script>
<test-fixture id="nested-structure">
  <template>
    <test-element></test-element>
    <div>
      <div class="a">
        <div class="b">
          <div class="c"></div>
        </div>
      </div>
    </div>
  </template>
</test-fixture>

<script type="module">
import '../../test/common-test-setup.js';
import {Polymer} from '@polymer/polymer/lib/legacy/polymer-fn.js';
import {DomUtilBehavior} from './dom-util-behavior.js';
suite('dom-util-behavior tests', () => {
  let element;
  let divs;

  suiteSetup(() => {
    // Define a Polymer element that uses this behavior.
    Polymer({
      is: 'test-element',
      behaviors: [DomUtilBehavior],
    });
  });

  setup(() => {
    const testDom = fixture('nested-structure');
    element = testDom[0];
    divs = testDom[1];
  });

  test('descendedFromClass', () => {
    // .c is a child of .a and not vice versa.
    assert.isTrue(element.descendedFromClass(divs.querySelector('.c'), 'a'));
    assert.isFalse(element.descendedFromClass(divs.querySelector('.a'), 'c'));

    // Stops at stop element.
    assert.isFalse(element.descendedFromClass(divs.querySelector('.c'), 'a',
        divs.querySelector('.b')));
  });
});
</script>