MD History: Show sidebar next to content on wide screens

chrome/test/data/webui/md_history/history_drawer_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_drawer_test', function () {
+  function registerTests() {
+    suite('drawer-test', function() {
+      var app;
+      var menuButton;
+
+      suiteSetup(function() {
+        app = $('history-app');
+        menuButton = app.$.toolbar.$['main-toolbar'].$.menuButton;
+      });
+
+      test('drawer has correct selection', function() {
+        app.selectedPage_ = 'syncedTabs';

[dpapad, 2016/07/29 01:45:58]

Accessing private properties is usually a sign that the test is too coupled with
the current implementation instead of testing publicly exposed behavior.

[tsergeant, 2016/07/29 02:47:54]

Acknowledged.

+        app.hasDrawer_ = true;
+        return flush().then(function() {
+          var drawer = app.$$('#drawer');
+          var drawerSideBar = app.$$('#drawer-side-bar');
+
+          assertTrue(!!drawer);
+          assertTrue(!!drawerSideBar);
+          MockInteractions.tap(menuButton);
+          assertTrue(drawer.opened);
+
+          assertEquals('syncedTabs', drawerSideBar.$.menu.selected);
+        });
+      });
+    });
+  }
+
+  return {
+    registerTests: registerTests
+  };
+});