MD History: Refactored design for displaying history information

chrome/test/data/webui/md_history/history_card_test.js

-// Copyright 2016 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-cr.define('md_history.history_card_test', function() {
-  function registerTests() {
-    suite('history-card', function() {
-      var element;
-
-      suiteSetup(function() {
-        element = document.createElement('history-card');
-        element.historyItems = [
-          {"time": "1000000000"},
-          {"time": "10000000"},
-          {"time": "900000"}
-        ];
-      })
-
-      test('basic separator insertion', function(done) {
-        flush(function() {
-          // Check that the correct number of time gaps are inserted.
-          var spacers =
-              Polymer.dom(element.root).querySelectorAll('#time-gap-separator');
-          assertEquals(2, spacers.length);
-          done();
-        });
-      });
-
-      test('separator insertion when items change but item list length stays ' +
-          'the same', function(done) {
-        element.set('historyItems', [{"time": "900000"},
-                                     {"time": "900000"},
-                                     {"time": "900000"}]);
-
-        flush(function() {
-          var items =
-            Polymer.dom(element.root).querySelectorAll('history-item');
-          var spacers =
-            Polymer.dom(element.root).querySelectorAll('#time-gap-separator');
-
-          assertEquals('900000', items[0].timestamp_);
-          assertEquals('900000', items[1].timestamp_);
-          assertEquals('900000', items[2].timestamp_);
-
-          // Note that the spacers aren't actually removed, are just set to:
-          // display: none;
-          for (var i = 0; i < spacers.length; i++) {
-            assertEquals(spacers[i].style.display, 'none');
-          }
-          done();
-        });
-      });
-    });
-  }
-  return {
-    registerTests: registerTests
-  };
-});