paper-dropdown-menu/test/paper-dropdown-menu.html

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<html>
<head>
  <meta charset="UTF-8">
  <title>paper-dropdown-menu basic tests</title>
  <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>
  <script src="../../test-fixture/test-fixture-mocha.js"></script>
  <script src="../../iron-test-helpers/mock-interactions.js"></script>

  <link rel="import" href="../../paper-listbox/paper-listbox.html">
  <link rel="import" href="../../paper-item/paper-item.html">
  <link rel="import" href="../../test-fixture/test-fixture.html">
  <link rel="import" href="../paper-dropdown-menu.html">

</head>
<body>

  <test-fixture id="TrivialDropdownMenu">
    <template>
      <paper-dropdown-menu no-animations>
        <paper-listbox class="dropdown-content">
          <paper-item>Foo</paper-item>
          <paper-item>Bar</paper-item>
        </paper-listbox>
      </paper-dropdown-menu>
    </template>
  </test-fixture>

  <test-fixture id="PreselectedDropdownMenu">
    <template>
      <paper-dropdown-menu no-animations>
        <paper-listbox class="dropdown-content" selected="1">
          <paper-item>Foo</paper-item>
          <paper-item>Bar</paper-item>
        </paper-listbox>
      </paper-dropdown-menu>
    </template>
  </test-fixture>

  <script>

    function runAfterOpen(menu, callback) {
      menu.$.menuButton.$.dropdown.addEventListener('iron-overlay-opened', function() {
        Polymer.Base.async(callback, 1);
      });
      MockInteractions.tap(menu);
    }

    suite('<paper-dropdown-menu>', function() {
      var dropdownMenu;

      setup(function() {
        dropdownMenu = fixture('TrivialDropdownMenu');
        content = Polymer.dom(dropdownMenu).querySelector('.dropdown-content');
      });

      test('opens when tapped', function(done) {
        var contentRect = content.getBoundingClientRect();

        expect(contentRect.width).to.be.equal(0);
        expect(contentRect.height).to.be.equal(0);

        runAfterOpen(dropdownMenu, function() {
          contentRect = content.getBoundingClientRect();

          expect(dropdownMenu.opened).to.be.equal(true);

          expect(contentRect.width).to.be.greaterThan(0);
          expect(contentRect.height).to.be.greaterThan(0);
          done();
        });

        expect(dropdownMenu.opened).to.be.equal(true);
      });

      test('closes when an item is activated', function(done) {
        runAfterOpen(dropdownMenu, function() {
          var firstItem = Polymer.dom(content).querySelector('paper-item');

          MockInteractions.tap(firstItem);

          Polymer.Base.async(function() {
            expect(dropdownMenu.opened).to.be.equal(false);
            done();
          });
        });
      });

      test('sets selected item to the activated item', function(done) {
        runAfterOpen(dropdownMenu, function() {
          var firstItem = Polymer.dom(content).querySelector('paper-item');

          MockInteractions.tap(firstItem);

          Polymer.Base.async(function() {
            expect(dropdownMenu.selectedItem).to.be.equal(firstItem);
            done();
          });
        });
      });

      suite('when a value is preselected', function() {
        setup(function() {
          dropdownMenu = fixture('PreselectedDropdownMenu');
        });

        test('the input area shows the correct selection', function() {
          Polymer.dom.flush();
          var secondItem = Polymer.dom(dropdownMenu).querySelectorAll('paper-item')[1];
          expect(dropdownMenu.selectedItem).to.be.equal(secondItem);
        });
      });

      suite('deselecting', function() {
        var menu;

        setup(function() {
          dropdownMenu = fixture('PreselectedDropdownMenu');
          menu = Polymer.dom(dropdownMenu).querySelector('.dropdown-content');
        });

        test('an `iron-deselect` event clears the current selection', function() {
          Polymer.dom.flush();
          menu.selected = null;
          expect(dropdownMenu.selectedItem).to.be.equal(null);
        });
      });

      suite('validation', function() {
        test('a non required dropdown is valid regardless of its selection', function() {
          var dropdownMenu = fixture('TrivialDropdownMenu');
          menu = Polymer.dom(dropdownMenu).querySelector('.dropdown-content');

          // no selection.
          expect(dropdownMenu.validate()).to.be.true;
          expect(dropdownMenu.invalid).to.be.false;
          expect(dropdownMenu.value).to.not.be.ok;

          // some selection.
          menu.selected = 1;
          expect(dropdownMenu.validate()).to.be.true;
          expect(dropdownMenu.invalid).to.be.false;
          expect(dropdownMenu.value).to.be.equal('Bar');
        });

        test('a required dropdown is invalid without a selection', function() {
          var dropdownMenu = fixture('TrivialDropdownMenu');
          dropdownMenu.required = true;

          // no selection.
          expect(dropdownMenu.validate()).to.be.false;
          expect(dropdownMenu.invalid).to.be.true;
          expect(dropdownMenu.value).to.not.be.ok;
        });

        test('a required dropdown is valid with a selection', function() {
          var dropdownMenu = fixture('PreselectedDropdownMenu');
          Polymer.dom.flush();

          dropdownMenu.required = true;

          expect(dropdownMenu.validate()).to.be.true;
          expect(dropdownMenu.invalid).to.be.false;
          expect(dropdownMenu.value).to.be.equal('Bar');
        });
      });
    });
  </script>

</body>
</html>