test/content.html

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<html>
<head>

  <title>iron-selector-content</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0">

  <script src="../node_modules/@webcomponents/webcomponentsjs/webcomponents-bundle.js"></script>
  <script src="../node_modules/wct-browser-legacy/browser.js"></script>

  <style>
    .iron-selected {
      background: #ccc;
    }
  </style>

</head>
<body>

  <test-fixture id="selector1">
    <template>
      <test-content-element selected="item0">
        <div id="item0">item0</div>
        <div id="item1">item1</div>
        <div id="item2">item2</div>
        <div id="item3">item3</div>
      </test-content-element>
    </template>
  </test-fixture>

  <test-fixture id="selector2">
    <template>
      <test-content-element selected="item0" selectable="item">
        <item id="item0">item0</item>
        <hr>
        <item id="item1">item1</item>
        <item id="item2">item2</item>
        <hr>
        <item id="item3">item3</item>
      </test-content-element>
    </template>
  </test-fixture>

  <test-fixture id="selector3-polymer1">
    <template>
      <test-content-element selected="item0">
        <template is="dom-repeat">
          <div id$="[[item.name]]">[[item.name]]</div>
        </template>
      </test-content-element>
    </template>
  </test-fixture>

  <test-fixture id="selector3-polymer2">
    <template>
      <test-content-element selected="item0">
        <dom-repeat>
          <template>
            <div id$="[[item.name]]">[[item.name]]</div>
          </template>
        </dom-repeat>
      </test-content-element>
    </template>
  </test-fixture>

  <script type="module">
    import '@polymer/test-fixture/test-fixture.js';
    import './content-element.js';
    import {dom, flush} from '@polymer/polymer/lib/legacy/polymer.dom.js';
    suite('content', function() {
      var s1;

      setup(function(done) {
        s1 = fixture('selector1');

        s1.selector.addEventListener(
            'iron-items-changed', function onIronItemsChanged() {
              s1.selector.removeEventListener(
                  'iron-items-changed', onIronItemsChanged);
              done();
            });
      });

      test('attribute selected', function() {
        // check selected class
        assert.isTrue(
            s1.querySelector('#item0').classList.contains('iron-selected'));
      });

      test('set selected', function() {
        // set selected
        s1.selected = 'item1';
        // check selected class
        assert.isTrue(
            s1.querySelector('#item1').classList.contains('iron-selected'));
      });

      test('get items', function() {
        assert.equal(s1.selector.items.length, 4);
      });

      test('activate event', function() {
        var item = s1.querySelector('#item2');
        item.dispatchEvent(new CustomEvent('tap', {bubbles: true}));
        // check selected class
        assert.isTrue(item.classList.contains('iron-selected'));
      });

      test('add item dynamically', function() {
        var item = document.createElement('div');
        item.id = 'item4';
        item.textContent = 'item4';
        dom(s1).appendChild(item);
        flush();
        // See the note in `forceSynchronousItemUpdate`.
        s1.selector.forceSynchronousItemUpdate();
        // set selected
        s1.selected = 'item4';
        // check items length
        assert.equal(s1.selector.items.length, 5);
        // check selected class
        assert.isTrue(
            s1.querySelector('#item4').classList.contains('iron-selected'));
      });
    });

    suite('content with selectable', function() {
      var s2;

      setup(function(done) {
        s2 = fixture('selector2');

        s2.selector.addEventListener(
            'iron-items-changed', function onIronItemsChanged() {
              s2.selector.removeEventListener(
                  'iron-items-changed', onIronItemsChanged);
              done();
            });
      });

      test('attribute selected', function() {
        // check selected class
        assert.isTrue(
            s2.querySelector('#item0').classList.contains('iron-selected'));
      });

      test('set selected', function() {
        // set selected
        s2.selected = 'item1';
        // check selected class
        assert.isTrue(
            s2.querySelector('#item1').classList.contains('iron-selected'));
      });

      test('get items', function() {
        assert.equal(s2.selector.items.length, 4);
      });

      test('activate event', function() {
        var item = s2.querySelector('#item2');
        item.dispatchEvent(new CustomEvent('tap', {bubbles: true}));
        // check selected class
        assert.isTrue(item.classList.contains('iron-selected'));
      });

      test('add item dynamically', function() {
        var item = document.createElement('item');
        item.id = 'item4';
        item.textContent = 'item4';
        dom(s2).appendChild(item);
        flush();
        // See the note in `forceSynchronousItemUpdate`.
        s2.selector.forceSynchronousItemUpdate();
        // set selected
        s2.selected = 'item4';
        // check items length
        assert.equal(s2.selector.items.length, 5);
        // check selected class
        assert.isTrue(
            s2.querySelector('#item4').classList.contains('iron-selected'));
      });
    });

    suite('content with dom-repeat', function() {
      var s3;
      var domRepeat;

      setup(function() {
        s3 = fixture('selector3-polymer2');
        domRepeat = s3.querySelector('dom-repeat');
      });

      test('supports repeated children', function() {
        domRepeat.items =
            [{name: 'item0'}, {name: 'item1'}, {name: 'item2'}, {name: 'item3'}];
        domRepeat.render();
        // See the note in `forceSynchronousItemUpdate`.
        s3.selector.forceSynchronousItemUpdate();
        // check selected
        assert.equal(s3.selected, 'item0');
        // check selected class
        assert.isTrue(
            s3.querySelector('#item0').classList.contains('iron-selected'));
        // set selected
        s3.selected = 'item2';
        // check selected class
        assert.isTrue(
            s3.querySelector('#item2').classList.contains('iron-selected'));
      });
    });
  </script>

</body>
</html>