MD Settings: Fix Advanced Toggle when on an Advanced section route.

chrome/test/data/webui/settings/settings_main_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('settings_main_page', function() {
   /**
    * @implements {SearchManager}
    */
   var TestSearchManager = function() {
     /** @private {boolean} */
@@ skipping 24 matching lines @@
   };
 
   function registerTests() {
     var settingsPrefs = null;
 
     suiteSetup(function() {
       settingsPrefs = document.createElement('settings-prefs');
       return CrSettingsPrefs.initialized;
     });
 
-    suite('SearchTests', function() {
+    suite('MainPageTests', function() {
       /** @type {?TestSearchManager} */
       var searchManager = null;
 
       /** @type {?SettingsMainElement} */
       var settingsMain = null;
 
       setup(function() {
+        settings.navigateTo(settings.Route.BASIC);
         searchManager = new TestSearchManager();
         settings.setSearchManagerForTesting(searchManager);
         PolymerTest.clearBody();
         settingsMain = document.createElement('settings-main');
         settingsMain.prefs = settingsPrefs.prefs;
         settingsMain.toolbarSpinnerActive = false;
         document.body.appendChild(settingsMain);
       });
 
       teardown(function() { settingsMain.remove(); });
@@ skipping 52 matching lines @@
         return settingsMain.searchContents('Query1').then(function() {
           searchManager.setMatchesFound(false);
           return settingsMain.searchContents('');
         }).then(function() {
           Polymer.dom.flush();
           // Checking that it remains hidden after results are cleared.
           assertEquals(
               'none', settingsMain.$$('settings-advanced-page').style.display);
         });
       });
+
+      test('can collapse advanced on advanced section route', function() {
+        settings.navigateTo(settings.Route.PRIVACY);
+        Polymer.dom.flush();
+
+        var advancedToggle = settingsMain.$$('#advancedToggle');
+        assertTrue(!!advancedToggle);
+
+        MockInteractions.tap(advancedToggle);
+        Polymer.dom.flush();
+
+        assertFalse(settingsMain.showPages_.advanced);
+      });
+
+      test('navigating to a basic page does not collapse advanced', function() {
+        settings.navigateTo(settings.Route.PRIVACY);
+        Polymer.dom.flush();
+
+        var advancedToggle = settingsMain.$$('#advancedToggle');
+        assertTrue(!!advancedToggle);
+
+        settings.navigateTo(settings.Route.PEOPLE);
+        Polymer.dom.flush();
+
+        assertTrue(settingsMain.showPages_.advanced);
+      });
     });
   }
 
   return {
     registerTests: registerTests,
   };
 });