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  • Committer: Didier Roche
  • Date: 2016-05-10 23:09:11 UTC
  • Revision ID: didier.roche@canonical.com-20160510230911-c7xr490zrj3yrzxd
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facedetection/www/bower_components/iron-list/test/dynamic-item-size.html
 
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<!doctype html>
 
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<!--
 
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@license
 
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Copyright (c) 2015 The Polymer Project Authors. All rights reserved.
 
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This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE
 
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The complete set of authors may be found at http://polymer.github.io/AUTHORS
 
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The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS
 
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Code distributed by Google as part of the polymer project is also
 
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subject to an additional IP rights grant found at http://polymer.github.io/PATENTS
 
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-->
 
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<html>
 
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<head>
 
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  <meta charset="UTF-8">
 
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  <title>iron-list test</title>
 
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  <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0">
 
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  <script src="../../webcomponentsjs/webcomponents-lite.js"></script>
 
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  <script src="../../web-component-tester/browser.js"></script>
 
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  <script src="../../iron-test-helpers/mock-interactions.js"></script>
 
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  <link rel="import" href="helpers.html">
 
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  <link rel="import" href="x-list.html">
 
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</head>
 
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<body>
 
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  <test-fixture id="trivialList">
 
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    <template>
 
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      <x-list item-height="0" pre></x-list>
 
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    </template>
 
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  </test-fixture>
 
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  <script>
 
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    suite('Dynamic item size', function() {
 
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      var list, container;
 
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      setup(function() {
 
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        container = fixture('trivialList');
 
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        list = container.list;
 
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      });
 
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      test('update size using item index', function(done) {
 
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        list.items = buildDataSet(100);
 
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        flush(function() {
 
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          var firstItem = getFirstItemFromList(list);
 
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          var initHeight = firstItem.offsetHeight;
 
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          list.set('items.0.index', '1\n2\n3\n4');
 
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          list.updateSizeForItem(0);
 
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          assert.isAbove(firstItem.offsetHeight, initHeight*3);
 
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          list.set('items.0.index', '1');
 
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          list.updateSizeForItem(0);
 
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          assert.equal(firstItem.offsetHeight, initHeight);
 
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          done();
 
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        });
 
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      });
 
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      test('update size using item object', function(done) {
 
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        list.items = buildDataSet(100);
 
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        flush(function() {
 
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          var firstItem = getFirstItemFromList(list);
 
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          var initHeight = firstItem.offsetHeight;
 
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          list.set('items.0.index', '1\n2\n3\n4');
 
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          list.updateSizeForItem(list.items[0]);
 
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          assert.isAbove(firstItem.offsetHeight, initHeight*3);
 
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          list.set('items.0.index', '1');
 
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          list.updateSizeForItem(list.items[0]);
 
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          assert.equal(firstItem.offsetHeight, initHeight);
 
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          done();
 
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        });
 
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      });
 
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      test('ignore items that are not rendered', function(done) {
 
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        list.items = buildDataSet(100);
 
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        flush(function() {
 
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          list.updateSizeForItem(list.items[list.items.length - 1]);
 
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          done();
 
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        });
 
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      });
 
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      test('throw if the item is invalid', function(done) {
 
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        list.items = buildDataSet(100);
 
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        flush(function() {
 
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          var firstItem = getFirstItemFromList(list);
 
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          var initHeight = firstItem.offsetHeight;
 
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          var throws = 0;
 
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          try {
 
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            list.updateSizeForItem(100);
 
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          } catch (error) {
 
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            throws++;
 
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          }
 
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          try {
 
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            list.updateSizeForItem({});
 
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          } catch (error) {
 
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            throws++;
 
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          }
 
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          assert.equal(throws, 2);
 
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          done();
 
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        });
 
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      });
 
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    });
 
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  </script>
 
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</body>
 
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</html>