<!doctype html> <!– @license Copyright © 2015 The Polymer Project Authors. All rights reserved. This code may only be used under the BSD style license found at polymer.github.io/LICENSE.txt The complete set of authors may be found at polymer.github.io/AUTHORS.txt The complete set of contributors may be found at polymer.github.io/CONTRIBUTORS.txt Code distributed by Google as part of the polymer project is also subject to an additional IP rights grant found at polymer.github.io/PATENTS.txt –>

<html> <head>

<title>iron-selector-basic</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>
<script src="../../test-fixture/test-fixture-mocha.js"></script>

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

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

  .my-selected {
    background: red;
  }
</style>

</head> <body>

<test-fixture id="defaults">
  <template>
    <iron-selector>
      <div>Item 0</div>
      <div>Item 1</div>
      <div>Item 2</div>
      <div>Item 3</div>
      <div>Item 4</div>
    </iron-selector>
  </template>
</test-fixture>

<br><br>

<test-fixture id="basic">
  <template>
    <iron-selector selected="item2" attr-for-selected="id">
      <div id="item0">Item 0</div>
      <div id="item1">Item 1</div>
      <div id="item2">Item 2</div>
      <div id="item3">Item 3</div>
      <div id="item4">Item 4</div>
    </iron-selector>
  </template>
</test-fixture>

<script>

  suite('defaults', function() {

    var s1;

    setup(function () {
      s1 = fixture('defaults');
    });

    test('to nothing selected', function() {
      assert.equal(s1.selected, null);
    });

    test('to iron-selected as selectedClass', function() {
      assert.equal(s1.selectedClass, 'iron-selected');
    });

    test('to false as multi', function() {
      assert.isFalse(s1.multi);
    });

    test('to tap as activateEvent', function() {
      assert.equal(s1.activateEvent, 'tap');
    });

    test('to nothing as attrForSelected', function() {
      assert.equal(s1.attrForSelected, null);
    });

    test('as many items as children', function() {
      assert.equal(s1.items.length, s1.querySelectorAll('div').length);
    });
  });

  suite('basic', function() {

    var s2;

    setup(function () {
      s2 = fixture('basic');
    });

    test('honors the attrForSelected attribute', function(done) {
      Polymer.Base.async(function() {
        assert.equal(s2.attrForSelected, 'id');
        assert.equal(s2.selected, 'item2');
        assert.equal(s2.selectedItem, document.querySelector('#item2'));
        done();
      });
    });

    test('allows assignment to selected', function() {
      // set selected
      s2.selected = 'item4';
      // check selected class
      assert.isTrue(s2.children[4].classList.contains('iron-selected'));
      // check item
      assert.equal(s2.selectedItem, s2.children[4]);
    });

    test('fire iron-select when selected is set', function() {
      // setup listener for iron-select event
      var selectedEventCounter = 0;
      s2.addEventListener('iron-select', function(e) {
        selectedEventCounter++;
      });
      // set selected
      s2.selected = 'item4';
      // check iron-select event
      assert.equal(selectedEventCounter, 1);
    });

    test('set selected to old value', function() {
      // setup listener for iron-select event
      var selectedEventCounter = 0;
      s2.addEventListener('iron-select', function(e) {
        selectedEventCounter++;
      });
      // selecting the same value shouldn't fire iron-select
      s2.selected = 'item2';
      assert.equal(selectedEventCounter, 0);
    });

    test('force synchronous item update', function() {
      expect(s2.items.length).to.be.equal(5);
      Polymer.dom(s2).appendChild(document.createElement('div'));
      expect(s2.items.length).to.be.equal(5);
      s2.forceSynchronousItemUpdate();
      expect(s2.items.length).to.be.equal(6);
    });

    suite('`select()` and `selectIndex()`', function() {
      test('`select()` selects an item with the given value', function() {
        s2.select('item1');
        assert.equal(s2.selected, 'item1');

        s2.select('item3');
        assert.equal(s2.selected, 'item3');

        s2.select('item2');
        assert.equal(s2.selected, 'item2');
      });

      test('`selectIndex()` selects an item with the given index', function() {
        assert.equal(s2.selectedItem, undefined);

        s2.selectIndex(1);
        assert.equal(s2.selected, 'item1');
        assert.equal(s2.selectedItem, s2.items[1]);

        s2.selectIndex(3);
        assert.equal(s2.selected, 'item3');
        assert.equal(s2.selectedItem, s2.items[3]);

        s2.selectIndex(4);
        assert.equal(s2.selected, 'item4');
        assert.equal(s2.selectedItem, s2.items[4]);
      });
    });

    suite('items changing', function() {
      var s1;

      setup(function() {
        s1 = fixture('defaults');
      });

      test('cause iron-items-changed to fire', function(done) {
        var newItem = document.createElement('div');
        var changeCount = 0;

        newItem.id = 'item999';

        s2.addEventListener('iron-items-changed', function(event) {
          changeCount++;
          var mutation = event.detail;
          assert.notEqual(mutation, undefined);
          assert.notEqual(mutation.addedNodes, undefined);
          assert.notEqual(mutation.removedNodes, undefined);
        });

        Polymer.dom(s2).appendChild(newItem);

        Polymer.Base.async(function() {
          Polymer.dom(s2).removeChild(newItem);

          Polymer.Base.async(function() {
            expect(changeCount).to.be.equal(2);
            done();
          }, 1);
        }, 1);
      });

      test('updates selected item', function(done) {
        s1.addEventListener('iron-items-changed', function firstListener() {
          s1.removeEventListener('iron-items-changed', firstListener);
          var firstElementChild = Polymer.dom(s1).firstElementChild;
          expect(firstElementChild).to.be.equal(s1.selectedItem);
          expect(firstElementChild.classList.contains('iron-selected'))
              .to.be.eql(true);
          Polymer.dom(s1).removeChild(s1.selectedItem);

          s1.addEventListener('iron-items-changed', function() {
            firstElementChild = Polymer.dom(s1).firstElementChild;
            expect(firstElementChild).to.be.equal(s1.selectedItem);
            expect(firstElementChild.classList.contains('iron-selected'))
                .to.be.eql(true);
            done();
          });
        });
        s1.selected = 0;
      });
    });

    suite('dynamic selector', function() {
      test('selects dynamically added child automatically', function(done) {
        var selector = document.createElement('iron-selector');
        var child = document.createElement('div');

        selector.selected = '0';
        child.textContent = 'Item 0';

        Polymer.dom(selector).appendChild(child);
        document.body.appendChild(selector);

        Polymer.Base.async(function() {
          assert.equal(child.className, 'iron-selected');
          document.body.removeChild(selector);
          done();
        }, 1);
      });
    });
  });

</script>

</body> </html>