// 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/pref_service.h"
#include "chrome/browser/prefs/session_startup_pref.h"
#include "chrome/browser/protector/base_setting_change.h"
#include "chrome/common/pref_names.h"
#include "chrome/test/base/testing_profile.h"
#include "testing/gtest/include/gtest/gtest.h"

#if defined(OS_MACOSX)
#include "base/mac/mac_util.h"
#endif

namespace protector {

namespace {

const char kStartupUrl[] = "http://example.com/";

}  // namespace

class PrefsBackupInvalidChangeTest : public testing::Test {
 protected:
  virtual void SetUp() OVERRIDE {
    // Make the tests independent of the Mac startup pref migration (see
    // SessionStartupPref::MigrateMacDefaultPrefIfNecessary).
    PrefService* prefs = profile_.GetPrefs();
    prefs->SetString(prefs::kProfileCreatedByVersion, "22.0.0.0.0");
  }

  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());
  // Homepage prefs are reset to defaults.
  PrefService* prefs = profile_.GetPrefs();
  EXPECT_FALSE(prefs->HasPrefPath(prefs::kHomePageIsNewTabPage));
  EXPECT_FALSE(prefs->HasPrefPath(prefs::kHomePage));
  EXPECT_FALSE(prefs->HasPrefPath(prefs::kShowHomeButton));
}

// 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