template-repeat.html 3.11 KB
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<html>
<head>

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

  <script src="../../webcomponentsjs/webcomponents-lite.js"></script>
  <script src="../../web-component-tester/browser.js"></script>

  <link rel="import" href="../iron-selector.html">

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

</head>
<body>

  <template is="dom-bind">
    <iron-selector id="selector" selected="1">
      <template id="t" is="dom-repeat">
        <div id$="[[item.name]]">{{item.name}}</div>
      </template>
    </iron-selector>
  </template>

  <script>

    suite('dom-repeat', function() {

      var scope, s, t;

      setup(function() {
        scope = document.querySelector('template[is="dom-bind"]');
        s = scope.$.selector;
        t = scope.$.t;
        t.items = [{name:'item0'}, {name: 'item1'}, {name: 'item2'}, {name: 'item3'}];
      });

      teardown(function() {
        t.items = [];
      });

      test('supports repeated items', function(done) {
        setTimeout(function() {
          // check items
          assert.equal(s.items.length, 4);
          // check selected
          assert.equal(s.selected, 1);
          // check selected item
          var item = s.selectedItem;
          assert.equal(s.items[1], item);
          // check selected class
          assert.isTrue(item.classList.contains('iron-selected'));
          done();
        });
      });

      test('update items', function(done) {
        setTimeout(function() {
          // check items
          assert.equal(s.items.length, 4);
          // check selected
          assert.equal(s.selected, 1);
          // update items
          t.items = [{name:'foo'}, {name: 'bar'}];
          setTimeout(function() {
            // check items
            assert.equal(s.items.length, 2);
            // check selected (should still honor the selected)
            assert.equal(s.selected, 1);
            // check selected class
            assert.isTrue(s.querySelector('#bar').classList.contains('iron-selected'));
            done();
          });
        });
      });

      test('set selected to something else', function(done) {
        setTimeout(function() {
          // set selected to something else
          s.selected = 3;
          // check selected item
          var item = s.selectedItem;
          assert.equal(s.items[3], item);
          // check selected class
          assert.isTrue(item.classList.contains('iron-selected'));
          done();
        });
      });

    });

  </script>

</body>
</html>