[protector] Added UI for invalid Preferences backup case.

chrome/browser/protector/prefs_backup_invalid_change_unittest.cc

+// Copyright (c) 2012 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 "base/memory/scoped_ptr.h"
+#include "chrome/browser/prefs/session_startup_pref.h"
+#include "chrome/browser/protector/base_setting_change.h"
+#include "chrome/test/base/testing_profile.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace protector {
+
+namespace {
+
+const char kStartupUrl[] = "http://example.com/";
+
+}  // namespace
+
+class PrefsBackupInvalidChangeTest : public testing::Test {
+ protected:
+  TestingProfile profile_;
+};
+
+// Test that correct default values are applied by Init.
+TEST_F(PrefsBackupInvalidChangeTest, Defaults) {
+  SessionStartupPref startup_pref(SessionStartupPref::URLS);
+  startup_pref.urls.push_back(GURL(kStartupUrl));
+  SessionStartupPref::SetStartupPref(&profile_, startup_pref);
+
+  scoped_ptr<BaseSettingChange> change(CreatePrefsBackupInvalidChange());
+  change->Init(&profile_);
+
+  SessionStartupPref new_startup_pref =
+      SessionStartupPref::GetStartupPref(&profile_);
+  // Startup type should be reset to default.
+  EXPECT_EQ(SessionStartupPref::GetDefaultStartupType(), new_startup_pref.type);
+  // Startup URLs should be left unchanged.
+  EXPECT_EQ(1UL, new_startup_pref.urls.size());
+  EXPECT_EQ(std::string(kStartupUrl), new_startup_pref.urls[0].spec());
+}
+
+// Test that "restore last session" setting is not changed by Init.
+TEST_F(PrefsBackupInvalidChangeTest, DefaultsWithSessionRestore) {
+  SessionStartupPref startup_pref(SessionStartupPref::LAST);
+  startup_pref.urls.push_back(GURL(kStartupUrl));
+  SessionStartupPref::SetStartupPref(&profile_, startup_pref);
+
+  scoped_ptr<BaseSettingChange> change(CreatePrefsBackupInvalidChange());
+  change->Init(&profile_);
+
+  SessionStartupPref new_startup_pref =
+      SessionStartupPref::GetStartupPref(&profile_);
+  // Both startup type and startup URLs should be left unchanged.
+  EXPECT_EQ(SessionStartupPref::LAST, new_startup_pref.type);
+  EXPECT_EQ(1UL, new_startup_pref.urls.size());
+  EXPECT_EQ(std::string(kStartupUrl), new_startup_pref.urls[0].spec());
+}
+
+}  // namespace protector