NTP: Allow hiding tips and bookmark sync....

chrome/browser/dom_ui/new_tab_ui_uitest.cc

 // Copyright (c) 2009 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.
 
 #include "chrome/test/ui/ui_test.h"
 
+#include "base/file_path.h"
 #include "chrome/app/chrome_dll_resource.h"
+#include "chrome/browser/dom_ui/new_tab_ui.h"
+#include "chrome/common/pref_names.h"
+#include "chrome/common/pref_service.h"
 #include "chrome/test/automation/browser_proxy.h"
 #include "chrome/test/automation/tab_proxy.h"
 #include "chrome/test/automation/window_proxy.h"
 
 class NewTabUITest : public UITest {
  public:
   NewTabUITest() {
     dom_automation_enabled_ = true;
 
     // Setup the DEFAULT_THEME profile (has fake history entries).
@@ skipping 29 matching lines @@
         L"window.domAutomationController.send("
         L"document.getElementsByClassName('filler').length)",
         &filler_thumbnails_count));
     if (filler_thumbnails_count == 0)
       break;
     PlatformThread::Sleep(kWaitDuration);
     wait_time -= kWaitDuration;
   }
   EXPECT_EQ(0, filler_thumbnails_count);
 }
+
+TEST_F(NewTabUITest, UpdateUserPrefsVersion) {
+  PrefService prefs(FilePath(), NULL);
+
+  // Does the migration
+  NewTabUI::RegisterUserPrefs(&prefs);
+
+  ASSERT_EQ(NewTabUI::current_pref_version(),
+            prefs.GetInteger(prefs::kNTPPrefVersion));
+
+  // Reset the version
+  prefs.ClearPref(prefs::kNTPPrefVersion);
+  ASSERT_EQ(0, prefs.GetInteger(prefs::kNTPPrefVersion));
+
+  bool migrated = NewTabUI::UpdateUserPrefsVersion(&prefs);
+  ASSERT_TRUE(migrated);
+  ASSERT_EQ(NewTabUI::current_pref_version(),
+            prefs.GetInteger(prefs::kNTPPrefVersion));
+
+  migrated = NewTabUI::UpdateUserPrefsVersion(&prefs);
+  ASSERT_FALSE(migrated);
+}