bower_components/iron-list/test/physical-count.html

<!doctype html>
<!--
@license
Copyright (c) 2015 The Polymer Project Authors. All rights reserved.
This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE
The complete set of authors may be found at http://polymer.github.io/AUTHORS
The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS
Code distributed by Google as part of the polymer project is also
subject to an additional IP rights grant found at http://polymer.github.io/PATENTS
-->
<html>
<head>
  <meta charset="UTF-8">
  <title>iron-list test</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>
  <link rel="import" href="../../test-fixture/test-fixture.html">
  <link rel="import" href="../../paper-styles/paper-styles.html">
  <link rel="import" href="helpers.html">
  <link rel="import" href="x-list.html">
</head>
<body>
  <test-fixture id="trivialList">
    <template>
      <x-list item-height="2" list-height="300"></x-list>
    </template>
  </test-fixture>
  <script>
    suite('dynamic physical count', function() {
      var list, container;
      setup(function() {
        container = fixture('trivialList');
        list = container.list;
      });
      test('increase pool size', function(done) {
        list.items = buildDataSet(1000);
        flush(function() {
          var lastItem = getLastItemFromList(list);
          var lastItemHeight = lastItem.offsetHeight;
          var expectedFinalItem = list.offsetHeight/lastItemHeight;
          assert.equal(lastItemHeight, 2);
          assert.equal(getLastItemFromList(list).textContent, expectedFinalItem);
          done();
        });
      });
      test('increase pool size on resize', function(done) {
        list.items = buildDataSet(1000);
        flush(function() {
          // change the height of the list
          container.listHeight = 500;
          // resize
          list.fire('iron-resize');
          flush(function() {
            var lastItem = getLastItemFromList(list);
            var lastItemHeight = lastItem.offsetHeight;
            var expectedFinalItem = list.offsetHeight/lastItemHeight;
            assert.equal(lastItemHeight, 2);
            assert.equal(getLastItemFromList(list).textContent, expectedFinalItem);
            done();
          });
        });
      });
    });
  </script>
</body>
</html>