// 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/auto_reset.h"
#include "base/command_line.h"
#include "base/json/json_reader.h"
#include "base/json/json_writer.h"
#include "base/message_loop/message_loop.h"
#include "base/prefs/pref_service.h"
#include "base/prefs/scoped_user_pref_update.h"
#include "chrome/browser/content_settings/content_settings_mock_observer.h"
#include "chrome/browser/content_settings/cookie_settings.h"
#include "chrome/browser/content_settings/mock_settings_observer.h"
#include "chrome/common/pref_names.h"
#include "chrome/common/url_constants.h"
#include "chrome/test/base/testing_pref_service_syncable.h"
#include "chrome/test/base/testing_profile.h"
#include "components/content_settings/core/browser/content_settings_details.h"
#include "components/content_settings/core/browser/host_content_settings_map.h"
#include "content/public/test/test_browser_thread.h"
#include "net/base/static_cookie_policy.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "url/gurl.h"

using content::BrowserThread;

using ::testing::_;

class HostContentSettingsMapTest : public testing::Test {
 public:
  HostContentSettingsMapTest() : ui_thread_(BrowserThread::UI, &message_loop_) {
  }

 protected:
  base::MessageLoop message_loop_;
  content::TestBrowserThread ui_thread_;
};

TEST_F(HostContentSettingsMapTest, DefaultValues) {
  TestingProfile profile;
  HostContentSettingsMap* host_content_settings_map =
      profile.GetHostContentSettingsMap();

  // Check setting defaults.
  EXPECT_EQ(CONTENT_SETTING_ALLOW,
            host_content_settings_map->GetDefaultContentSetting(
                CONTENT_SETTINGS_TYPE_JAVASCRIPT, NULL));
  host_content_settings_map->SetDefaultContentSetting(
      CONTENT_SETTINGS_TYPE_IMAGES, CONTENT_SETTING_BLOCK);
  EXPECT_EQ(CONTENT_SETTING_BLOCK,
            host_content_settings_map->GetDefaultContentSetting(
                CONTENT_SETTINGS_TYPE_IMAGES, NULL));
  EXPECT_EQ(CONTENT_SETTING_ALLOW, host_content_settings_map->GetContentSetting(
                GURL(chrome::kChromeUINewTabURL),
                GURL(chrome::kChromeUINewTabURL),
                CONTENT_SETTINGS_TYPE_IMAGES,
                std::string()));

  host_content_settings_map->SetDefaultContentSetting(
      CONTENT_SETTINGS_TYPE_PLUGINS, CONTENT_SETTING_ALLOW);
  EXPECT_EQ(CONTENT_SETTING_ALLOW,
            host_content_settings_map->GetDefaultContentSetting(
                CONTENT_SETTINGS_TYPE_PLUGINS, NULL));
  host_content_settings_map->SetDefaultContentSetting(
      CONTENT_SETTINGS_TYPE_PLUGINS, CONTENT_SETTING_BLOCK);
  EXPECT_EQ(CONTENT_SETTING_BLOCK,
            host_content_settings_map->GetDefaultContentSetting(
                CONTENT_SETTINGS_TYPE_PLUGINS, NULL));
  host_content_settings_map->SetDefaultContentSetting(
      CONTENT_SETTINGS_TYPE_PLUGINS, CONTENT_SETTING_DETECT_IMPORTANT_CONTENT);
  EXPECT_EQ(CONTENT_SETTING_DETECT_IMPORTANT_CONTENT,
            host_content_settings_map->GetDefaultContentSetting(
                CONTENT_SETTINGS_TYPE_PLUGINS, NULL));

  host_content_settings_map->SetDefaultContentSetting(
      CONTENT_SETTINGS_TYPE_POPUPS, CONTENT_SETTING_ALLOW);
  EXPECT_EQ(CONTENT_SETTING_ALLOW,
            host_content_settings_map->GetDefaultContentSetting(
                CONTENT_SETTINGS_TYPE_POPUPS, NULL));
}

TEST_F(HostContentSettingsMapTest, IndividualSettings) {
  TestingProfile profile;
  HostContentSettingsMap* host_content_settings_map =
      profile.GetHostContentSettingsMap();

  // Check returning individual settings.
  GURL host("http://example.com/");
  ContentSettingsPattern pattern =
       ContentSettingsPattern::FromString("[*.]example.com");
  EXPECT_EQ(CONTENT_SETTING_ALLOW,
            host_content_settings_map->GetContentSetting(
                host, host, CONTENT_SETTINGS_TYPE_IMAGES, std::string()));
  host_content_settings_map->SetContentSetting(
      pattern,
      ContentSettingsPattern::Wildcard(),
      CONTENT_SETTINGS_TYPE_IMAGES,
      std::string(),
      CONTENT_SETTING_DEFAULT);
  EXPECT_EQ(CONTENT_SETTING_ALLOW,
            host_content_settings_map->GetContentSetting(
                host, host, CONTENT_SETTINGS_TYPE_IMAGES, std::string()));
  host_content_settings_map->SetContentSetting(
      pattern,
      ContentSettingsPattern::Wildcard(),
      CONTENT_SETTINGS_TYPE_IMAGES,
      std::string(),
      CONTENT_SETTING_BLOCK);
  EXPECT_EQ(CONTENT_SETTING_BLOCK,
            host_content_settings_map->GetContentSetting(
                host, host, CONTENT_SETTINGS_TYPE_IMAGES, std::string()));
  EXPECT_EQ(CONTENT_SETTING_ALLOW,
            host_content_settings_map->GetContentSetting(
                host, host, CONTENT_SETTINGS_TYPE_PLUGINS, std::string()));

  // Check returning all settings for a host.
  host_content_settings_map->SetContentSetting(
      pattern,
      ContentSettingsPattern::Wildcard(),
      CONTENT_SETTINGS_TYPE_IMAGES,
      std::string(),
      CONTENT_SETTING_DEFAULT);
  EXPECT_EQ(CONTENT_SETTING_ALLOW,
            host_content_settings_map->GetContentSetting(
                host, host, CONTENT_SETTINGS_TYPE_IMAGES, std::string()));
  host_content_settings_map->SetContentSetting(
      pattern,
      ContentSettingsPattern::Wildcard(),
      CONTENT_SETTINGS_TYPE_JAVASCRIPT,
      std::string(),
      CONTENT_SETTING_BLOCK);
  EXPECT_EQ(CONTENT_SETTING_BLOCK,
            host_content_settings_map->GetContentSetting(
                host, host, CONTENT_SETTINGS_TYPE_JAVASCRIPT, std::string()));
  host_content_settings_map->SetContentSetting(
      pattern,
      ContentSettingsPattern::Wildcard(),
      CONTENT_SETTINGS_TYPE_PLUGINS,
      std::string(),
      CONTENT_SETTING_ALLOW);
  EXPECT_EQ(CONTENT_SETTING_ALLOW,
            host_content_settings_map->GetContentSetting(
                host, host, CONTENT_SETTINGS_TYPE_PLUGINS, std::string()));
  EXPECT_EQ(CONTENT_SETTING_BLOCK,
            host_content_settings_map->GetContentSetting(
                host, host, CONTENT_SETTINGS_TYPE_POPUPS, std::string()));
  EXPECT_EQ(CONTENT_SETTING_ASK,
            host_content_settings_map->GetContentSetting(
                host, host, CONTENT_SETTINGS_TYPE_GEOLOCATION, std::string()));
  EXPECT_EQ(
      CONTENT_SETTING_ASK,
      host_content_settings_map->GetContentSetting(
          host, host, CONTENT_SETTINGS_TYPE_NOTIFICATIONS, std::string()));
  EXPECT_EQ(CONTENT_SETTING_ASK,
            host_content_settings_map->GetContentSetting(
                host, host, CONTENT_SETTINGS_TYPE_FULLSCREEN, std::string()));
  EXPECT_EQ(CONTENT_SETTING_ASK,
            host_content_settings_map->GetContentSetting(
                host, host, CONTENT_SETTINGS_TYPE_MOUSELOCK, std::string()));

  // Check returning all hosts for a setting.
  ContentSettingsPattern pattern2 =
       ContentSettingsPattern::FromString("[*.]example.org");
  host_content_settings_map->SetContentSetting(
      pattern2,
      ContentSettingsPattern::Wildcard(),
      CONTENT_SETTINGS_TYPE_IMAGES,
      std::string(),
      CONTENT_SETTING_BLOCK);
  host_content_settings_map->SetContentSetting(
      pattern2,
      ContentSettingsPattern::Wildcard(),
      CONTENT_SETTINGS_TYPE_PLUGINS,
      std::string(),
      CONTENT_SETTING_BLOCK);
  ContentSettingsForOneType host_settings;
  host_content_settings_map->GetSettingsForOneType(
      CONTENT_SETTINGS_TYPE_IMAGES, std::string(), &host_settings);
  // |host_settings| contains the default setting and an exception.
  EXPECT_EQ(2U, host_settings.size());
  host_content_settings_map->GetSettingsForOneType(
      CONTENT_SETTINGS_TYPE_PLUGINS, std::string(), &host_settings);
  // |host_settings| contains the default setting and 2 exceptions.
  EXPECT_EQ(3U, host_settings.size());
  host_content_settings_map->GetSettingsForOneType(
      CONTENT_SETTINGS_TYPE_POPUPS, std::string(), &host_settings);
  // |host_settings| contains only the default setting.
  EXPECT_EQ(1U, host_settings.size());
}

TEST_F(HostContentSettingsMapTest, Clear) {
  TestingProfile profile;
  HostContentSettingsMap* host_content_settings_map =
      profile.GetHostContentSettingsMap();

  // Check clearing one type.
  ContentSettingsPattern pattern =
       ContentSettingsPattern::FromString("[*.]example.org");
  ContentSettingsPattern pattern2 =
      ContentSettingsPattern::FromString("[*.]example.net");
  host_content_settings_map->SetContentSetting(
      pattern2,
      ContentSettingsPattern::Wildcard(),
      CONTENT_SETTINGS_TYPE_IMAGES,
      std::string(),
      CONTENT_SETTING_BLOCK);
  host_content_settings_map->SetContentSetting(
      pattern,
      ContentSettingsPattern::Wildcard(),
      CONTENT_SETTINGS_TYPE_IMAGES,
      std::string(),
      CONTENT_SETTING_BLOCK);
  host_content_settings_map->SetContentSetting(
      pattern,
      ContentSettingsPattern::Wildcard(),
      CONTENT_SETTINGS_TYPE_PLUGINS,
      std::string(),
      CONTENT_SETTING_BLOCK);
  host_content_settings_map->SetContentSetting(
      pattern2,
      ContentSettingsPattern::Wildcard(),
      CONTENT_SETTINGS_TYPE_IMAGES,
      std::string(),
      CONTENT_SETTING_BLOCK);
  host_content_settings_map->ClearSettingsForOneType(
      CONTENT_SETTINGS_TYPE_IMAGES);
  ContentSettingsForOneType host_settings;
  host_content_settings_map->GetSettingsForOneType(
      CONTENT_SETTINGS_TYPE_IMAGES, std::string(), &host_settings);
  // |host_settings| contains only the default setting.
  EXPECT_EQ(1U, host_settings.size());
  host_content_settings_map->GetSettingsForOneType(
      CONTENT_SETTINGS_TYPE_PLUGINS, std::string(), &host_settings);
  // |host_settings| contains the default setting and an exception.
  EXPECT_EQ(2U, host_settings.size());
}

TEST_F(HostContentSettingsMapTest, Patterns) {
  TestingProfile profile;
  HostContentSettingsMap* host_content_settings_map =
      profile.GetHostContentSettingsMap();

  GURL host1("http://example.com/");
  GURL host2("http://www.example.com/");
  GURL host3("http://example.org/");
  ContentSettingsPattern pattern1 =
       ContentSettingsPattern::FromString("[*.]example.com");
  ContentSettingsPattern pattern2 =
       ContentSettingsPattern::FromString("example.org");
  EXPECT_EQ(CONTENT_SETTING_ALLOW,
            host_content_settings_map->GetContentSetting(
                host1, host1, CONTENT_SETTINGS_TYPE_IMAGES, std::string()));
  host_content_settings_map->SetContentSetting(
      pattern1,
      ContentSettingsPattern::Wildcard(),
      CONTENT_SETTINGS_TYPE_IMAGES,
      std::string(),
      CONTENT_SETTING_BLOCK);
  EXPECT_EQ(CONTENT_SETTING_BLOCK,
            host_content_settings_map->GetContentSetting(
                host1, host1, CONTENT_SETTINGS_TYPE_IMAGES, std::string()));
  EXPECT_EQ(CONTENT_SETTING_BLOCK,
            host_content_settings_map->GetContentSetting(
                host2, host2, CONTENT_SETTINGS_TYPE_IMAGES, std::string()));
  EXPECT_EQ(CONTENT_SETTING_ALLOW,
            host_content_settings_map->GetContentSetting(
                host3, host3, CONTENT_SETTINGS_TYPE_IMAGES, std::string()));
  host_content_settings_map->SetContentSetting(
      pattern2,
      ContentSettingsPattern::Wildcard(),
      CONTENT_SETTINGS_TYPE_IMAGES,
      std::string(),
      CONTENT_SETTING_BLOCK);
  EXPECT_EQ(CONTENT_SETTING_BLOCK,
            host_content_settings_map->GetContentSetting(
                host3, host3, CONTENT_SETTINGS_TYPE_IMAGES, std::string()));
}

TEST_F(HostContentSettingsMapTest, Observer) {
  TestingProfile profile;
  HostContentSettingsMap* host_content_settings_map =
      profile.GetHostContentSettingsMap();
  MockSettingsObserver observer(host_content_settings_map);

  ContentSettingsPattern primary_pattern =
      ContentSettingsPattern::FromString("[*.]example.com");
  ContentSettingsPattern secondary_pattern =
      ContentSettingsPattern::Wildcard();
  EXPECT_CALL(observer,
              OnContentSettingsChanged(host_content_settings_map,
                                       CONTENT_SETTINGS_TYPE_IMAGES,
                                       false,
                                       primary_pattern,
                                       secondary_pattern,
                                       false));
  host_content_settings_map->SetContentSetting(
      primary_pattern,
      secondary_pattern,
      CONTENT_SETTINGS_TYPE_IMAGES,
      std::string(),
      CONTENT_SETTING_ALLOW);
  ::testing::Mock::VerifyAndClearExpectations(&observer);

  EXPECT_CALL(observer,
              OnContentSettingsChanged(host_content_settings_map,
                                       CONTENT_SETTINGS_TYPE_IMAGES, false,
                                       _, _, true));
  host_content_settings_map->ClearSettingsForOneType(
      CONTENT_SETTINGS_TYPE_IMAGES);
  ::testing::Mock::VerifyAndClearExpectations(&observer);

  EXPECT_CALL(observer,
              OnContentSettingsChanged(host_content_settings_map,
                                       CONTENT_SETTINGS_TYPE_IMAGES, false,
                                       _, _, true));
  host_content_settings_map->SetDefaultContentSetting(
      CONTENT_SETTINGS_TYPE_IMAGES, CONTENT_SETTING_BLOCK);
}

TEST_F(HostContentSettingsMapTest, ObserveDefaultPref) {
  TestingProfile profile;
  HostContentSettingsMap* host_content_settings_map =
      profile.GetHostContentSettingsMap();

  PrefService* prefs = profile.GetPrefs();

  // Make a copy of the default pref value so we can reset it later.
  scoped_ptr<base::Value> default_value(prefs->FindPreference(
      prefs::kDefaultContentSettings)->GetValue()->DeepCopy());

  GURL host("http://example.com");

  host_content_settings_map->SetDefaultContentSetting(
      CONTENT_SETTINGS_TYPE_IMAGES, CONTENT_SETTING_BLOCK);
  EXPECT_EQ(CONTENT_SETTING_BLOCK,
            host_content_settings_map->GetContentSetting(
                host, host, CONTENT_SETTINGS_TYPE_IMAGES, std::string()));

  // Make a copy of the pref's new value so we can reset it later.
  scoped_ptr<base::Value> new_value(prefs->FindPreference(
      prefs::kDefaultContentSettings)->GetValue()->DeepCopy());

  // Clearing the backing pref should also clear the internal cache.
  prefs->Set(prefs::kDefaultContentSettings, *default_value);
  EXPECT_EQ(CONTENT_SETTING_ALLOW,
            host_content_settings_map->GetContentSetting(
                host, host, CONTENT_SETTINGS_TYPE_IMAGES, std::string()));

  // Reseting the pref to its previous value should update the cache.
  prefs->Set(prefs::kDefaultContentSettings, *new_value);
  EXPECT_EQ(CONTENT_SETTING_BLOCK,
            host_content_settings_map->GetContentSetting(
                host, host, CONTENT_SETTINGS_TYPE_IMAGES, std::string()));
}

TEST_F(HostContentSettingsMapTest, ObserveExceptionPref) {
  TestingProfile profile;
  HostContentSettingsMap* host_content_settings_map =
      profile.GetHostContentSettingsMap();

  PrefService* prefs = profile.GetPrefs();

  // Make a copy of the default pref value so we can reset it later.
  scoped_ptr<base::Value> default_value(prefs->FindPreference(
      prefs::kContentSettingsPatternPairs)->GetValue()->DeepCopy());

  ContentSettingsPattern pattern =
       ContentSettingsPattern::FromString("[*.]example.com");
  GURL host("http://example.com");

  EXPECT_EQ(CONTENT_SETTING_ALLOW,
            host_content_settings_map->GetContentSetting(
                host, host, CONTENT_SETTINGS_TYPE_IMAGES, std::string()));

  host_content_settings_map->SetContentSetting(
      pattern,
      ContentSettingsPattern::Wildcard(),
      CONTENT_SETTINGS_TYPE_IMAGES,
      std::string(),
      CONTENT_SETTING_BLOCK);
  EXPECT_EQ(CONTENT_SETTING_BLOCK,
            host_content_settings_map->GetContentSetting(
                host, host, CONTENT_SETTINGS_TYPE_IMAGES, std::string()));

  // Make a copy of the pref's new value so we can reset it later.
  scoped_ptr<base::Value> new_value(prefs->FindPreference(
      prefs::kContentSettingsPatternPairs)->GetValue()->DeepCopy());

  // Clearing the backing pref should also clear the internal cache.
  prefs->Set(prefs::kContentSettingsPatternPairs, *default_value);
  EXPECT_EQ(CONTENT_SETTING_ALLOW,
            host_content_settings_map->GetContentSetting(
                host, host, CONTENT_SETTINGS_TYPE_IMAGES, std::string()));

  // Reseting the pref to its previous value should update the cache.
  prefs->Set(prefs::kContentSettingsPatternPairs, *new_value);
  EXPECT_EQ(CONTENT_SETTING_BLOCK,
            host_content_settings_map->GetContentSetting(
                host, host, CONTENT_SETTINGS_TYPE_IMAGES, std::string()));
}

TEST_F(HostContentSettingsMapTest, HostTrimEndingDotCheck) {
  TestingProfile profile;
  HostContentSettingsMap* host_content_settings_map =
      profile.GetHostContentSettingsMap();
  CookieSettings* cookie_settings =
      CookieSettings::Factory::GetForProfile(&profile).get();

  ContentSettingsPattern pattern =
       ContentSettingsPattern::FromString("[*.]example.com");
  GURL host_ending_with_dot("http://example.com./");

  EXPECT_EQ(CONTENT_SETTING_ALLOW,
            host_content_settings_map->GetContentSetting(
                host_ending_with_dot,
                host_ending_with_dot,
                CONTENT_SETTINGS_TYPE_IMAGES,
                std::string()));
  host_content_settings_map->SetContentSetting(
      pattern,
      ContentSettingsPattern::Wildcard(),
      CONTENT_SETTINGS_TYPE_IMAGES,
      std::string(),
      CONTENT_SETTING_DEFAULT);
  EXPECT_EQ(
      CONTENT_SETTING_ALLOW,
      host_content_settings_map->GetContentSetting(host_ending_with_dot,
                                                   host_ending_with_dot,
                                                   CONTENT_SETTINGS_TYPE_IMAGES,
                                                   std::string()));
  host_content_settings_map->SetContentSetting(
      pattern,
      ContentSettingsPattern::Wildcard(),
      CONTENT_SETTINGS_TYPE_IMAGES,
      std::string(),
      CONTENT_SETTING_BLOCK);
  EXPECT_EQ(
      CONTENT_SETTING_BLOCK,
      host_content_settings_map->GetContentSetting(host_ending_with_dot,
                                                   host_ending_with_dot,
                                                   CONTENT_SETTINGS_TYPE_IMAGES,
                                                   std::string()));

  EXPECT_TRUE(cookie_settings->IsSettingCookieAllowed(
      host_ending_with_dot, host_ending_with_dot));
  host_content_settings_map->SetContentSetting(
      pattern,
      ContentSettingsPattern::Wildcard(),
      CONTENT_SETTINGS_TYPE_COOKIES,
      std::string(),
      CONTENT_SETTING_DEFAULT);
  EXPECT_TRUE(cookie_settings->IsSettingCookieAllowed(
      host_ending_with_dot, host_ending_with_dot));
  host_content_settings_map->SetContentSetting(
      pattern,
      ContentSettingsPattern::Wildcard(),
      CONTENT_SETTINGS_TYPE_COOKIES,
      std::string(),
      CONTENT_SETTING_BLOCK);
  EXPECT_FALSE(cookie_settings->IsSettingCookieAllowed(
      host_ending_with_dot, host_ending_with_dot));

  EXPECT_EQ(CONTENT_SETTING_ALLOW,
            host_content_settings_map->GetContentSetting(
                host_ending_with_dot,
                host_ending_with_dot,
                CONTENT_SETTINGS_TYPE_JAVASCRIPT,
                std::string()));
  host_content_settings_map->SetContentSetting(
      pattern,
      ContentSettingsPattern::Wildcard(),
      CONTENT_SETTINGS_TYPE_JAVASCRIPT,
      std::string(),
      CONTENT_SETTING_DEFAULT);
  EXPECT_EQ(CONTENT_SETTING_ALLOW,
            host_content_settings_map->GetContentSetting(
                host_ending_with_dot,
                host_ending_with_dot,
                CONTENT_SETTINGS_TYPE_JAVASCRIPT,
                std::string()));
  host_content_settings_map->SetContentSetting(
      pattern,
      ContentSettingsPattern::Wildcard(),
      CONTENT_SETTINGS_TYPE_JAVASCRIPT,
      std::string(),
      CONTENT_SETTING_BLOCK);
  EXPECT_EQ(CONTENT_SETTING_BLOCK,
            host_content_settings_map->GetContentSetting(
                host_ending_with_dot,
                host_ending_with_dot,
                CONTENT_SETTINGS_TYPE_JAVASCRIPT,
                std::string()));

  EXPECT_EQ(CONTENT_SETTING_ALLOW,
            host_content_settings_map->GetContentSetting(
                host_ending_with_dot,
                host_ending_with_dot,
                CONTENT_SETTINGS_TYPE_PLUGINS,
                std::string()));
  host_content_settings_map->SetContentSetting(
      pattern,
      ContentSettingsPattern::Wildcard(),
      CONTENT_SETTINGS_TYPE_PLUGINS,
      std::string(),
      CONTENT_SETTING_DEFAULT);
  EXPECT_EQ(CONTENT_SETTING_ALLOW,
            host_content_settings_map->GetContentSetting(
                host_ending_with_dot,
                host_ending_with_dot,
                CONTENT_SETTINGS_TYPE_PLUGINS,
                std::string()));
  host_content_settings_map->SetContentSetting(
      pattern,
      ContentSettingsPattern::Wildcard(),
      CONTENT_SETTINGS_TYPE_PLUGINS,
      std::string(),
      CONTENT_SETTING_BLOCK);
  EXPECT_EQ(CONTENT_SETTING_BLOCK,
            host_content_settings_map->GetContentSetting(
                host_ending_with_dot,
                host_ending_with_dot,
                CONTENT_SETTINGS_TYPE_PLUGINS,
                std::string()));

  EXPECT_EQ(
      CONTENT_SETTING_BLOCK,
      host_content_settings_map->GetContentSetting(host_ending_with_dot,
                                                   host_ending_with_dot,
                                                   CONTENT_SETTINGS_TYPE_POPUPS,
                                                   std::string()));
  host_content_settings_map->SetContentSetting(
      pattern,
      ContentSettingsPattern::Wildcard(),
      CONTENT_SETTINGS_TYPE_POPUPS,
      std::string(),
      CONTENT_SETTING_DEFAULT);
  EXPECT_EQ(
      CONTENT_SETTING_BLOCK,
      host_content_settings_map->GetContentSetting(host_ending_with_dot,
                                                   host_ending_with_dot,
                                                   CONTENT_SETTINGS_TYPE_POPUPS,
                                                   std::string()));
  host_content_settings_map->SetContentSetting(
      pattern,
      ContentSettingsPattern::Wildcard(),
      CONTENT_SETTINGS_TYPE_POPUPS,
      std::string(),
      CONTENT_SETTING_ALLOW);
  EXPECT_EQ(
      CONTENT_SETTING_ALLOW,
      host_content_settings_map->GetContentSetting(host_ending_with_dot,
                                                   host_ending_with_dot,
                                                   CONTENT_SETTINGS_TYPE_POPUPS,
                                                   std::string()));
}

TEST_F(HostContentSettingsMapTest, NestedSettings) {
  TestingProfile profile;
  HostContentSettingsMap* host_content_settings_map =
      profile.GetHostContentSettingsMap();

  GURL host("http://a.b.example.com/");
  ContentSettingsPattern pattern1 =
       ContentSettingsPattern::FromString("[*.]example.com");
  ContentSettingsPattern pattern2 =
       ContentSettingsPattern::FromString("[*.]b.example.com");
  ContentSettingsPattern pattern3 =
       ContentSettingsPattern::FromString("a.b.example.com");

  host_content_settings_map->SetContentSetting(
      pattern1,
      ContentSettingsPattern::Wildcard(),
      CONTENT_SETTINGS_TYPE_IMAGES,
      std::string(),
      CONTENT_SETTING_BLOCK);

  host_content_settings_map->SetContentSetting(
      pattern2,
      ContentSettingsPattern::Wildcard(),
      CONTENT_SETTINGS_TYPE_COOKIES,
      std::string(),
      CONTENT_SETTING_BLOCK);

  host_content_settings_map->SetContentSetting(
      pattern3,
      ContentSettingsPattern::Wildcard(),
      CONTENT_SETTINGS_TYPE_PLUGINS,
      std::string(),
      CONTENT_SETTING_BLOCK);
  host_content_settings_map->SetDefaultContentSetting(
      CONTENT_SETTINGS_TYPE_JAVASCRIPT, CONTENT_SETTING_BLOCK);

  EXPECT_EQ(CONTENT_SETTING_BLOCK,
            host_content_settings_map->GetContentSetting(
                host, host, CONTENT_SETTINGS_TYPE_COOKIES, std::string()));
  EXPECT_EQ(CONTENT_SETTING_BLOCK,
            host_content_settings_map->GetContentSetting(
                host, host, CONTENT_SETTINGS_TYPE_IMAGES, std::string()));
  EXPECT_EQ(CONTENT_SETTING_BLOCK,
            host_content_settings_map->GetContentSetting(
                host, host, CONTENT_SETTINGS_TYPE_JAVASCRIPT, std::string()));
  EXPECT_EQ(CONTENT_SETTING_BLOCK,
            host_content_settings_map->GetContentSetting(
                host, host, CONTENT_SETTINGS_TYPE_PLUGINS, std::string()));
  EXPECT_EQ(CONTENT_SETTING_BLOCK,
            host_content_settings_map->GetContentSetting(
                host, host, CONTENT_SETTINGS_TYPE_POPUPS, std::string()));
  EXPECT_EQ(CONTENT_SETTING_ASK,
            host_content_settings_map->GetContentSetting(
                host, host, CONTENT_SETTINGS_TYPE_GEOLOCATION, std::string()));
  EXPECT_EQ(
      CONTENT_SETTING_ASK,
      host_content_settings_map->GetContentSetting(
          host, host, CONTENT_SETTINGS_TYPE_NOTIFICATIONS, std::string()));
  EXPECT_EQ(CONTENT_SETTING_ASK,
            host_content_settings_map->GetContentSetting(
                host, host, CONTENT_SETTINGS_TYPE_FULLSCREEN, std::string()));
  EXPECT_EQ(CONTENT_SETTING_ASK,
            host_content_settings_map->GetContentSetting(
                host, host, CONTENT_SETTINGS_TYPE_MOUSELOCK, std::string()));
}

TEST_F(HostContentSettingsMapTest, OffTheRecord) {
  TestingProfile profile;
  HostContentSettingsMap* host_content_settings_map =
      profile.GetHostContentSettingsMap();
  scoped_refptr<HostContentSettingsMap> otr_map(
      new HostContentSettingsMap(profile.GetPrefs(),
                                 true));

  GURL host("http://example.com/");
  ContentSettingsPattern pattern =
       ContentSettingsPattern::FromString("[*.]example.com");

  EXPECT_EQ(CONTENT_SETTING_ALLOW,
            host_content_settings_map->GetContentSetting(
                host, host, CONTENT_SETTINGS_TYPE_IMAGES, std::string()));
  EXPECT_EQ(CONTENT_SETTING_ALLOW,
            otr_map->GetContentSetting(
                host, host, CONTENT_SETTINGS_TYPE_IMAGES, std::string()));

  // Changing content settings on the main map should also affect the
  // incognito map.
  host_content_settings_map->SetContentSetting(
      pattern,
      ContentSettingsPattern::Wildcard(),
      CONTENT_SETTINGS_TYPE_IMAGES,
      std::string(),
      CONTENT_SETTING_BLOCK);
  EXPECT_EQ(CONTENT_SETTING_BLOCK,
            host_content_settings_map->GetContentSetting(
                host, host, CONTENT_SETTINGS_TYPE_IMAGES, std::string()));
  EXPECT_EQ(CONTENT_SETTING_BLOCK,
            otr_map->GetContentSetting(
                host, host, CONTENT_SETTINGS_TYPE_IMAGES, std::string()));

  // Changing content settings on the incognito map should NOT affect the
  // main map.
  otr_map->SetContentSetting(pattern,
                             ContentSettingsPattern::Wildcard(),
                             CONTENT_SETTINGS_TYPE_IMAGES,
                             std::string(),
                             CONTENT_SETTING_ALLOW);
  EXPECT_EQ(CONTENT_SETTING_BLOCK,
            host_content_settings_map->GetContentSetting(
                host, host, CONTENT_SETTINGS_TYPE_IMAGES, std::string()));
  EXPECT_EQ(CONTENT_SETTING_ALLOW,
            otr_map->GetContentSetting(
                host, host, CONTENT_SETTINGS_TYPE_IMAGES, std::string()));

  otr_map->ShutdownOnUIThread();
}

// For a single Unicode encoded pattern, check if it gets converted to punycode
// and old pattern gets deleted.
TEST_F(HostContentSettingsMapTest, CanonicalizeExceptionsUnicodeOnly) {
  TestingProfile profile;
  PrefService* prefs = profile.GetPrefs();

  // Set utf-8 data.
  {
    DictionaryPrefUpdate update(prefs, prefs::kContentSettingsPatternPairs);
    base::DictionaryValue* all_settings_dictionary = update.Get();
    ASSERT_TRUE(NULL != all_settings_dictionary);

    base::DictionaryValue* dummy_payload = new base::DictionaryValue;
    dummy_payload->SetInteger("images", CONTENT_SETTING_ALLOW);
    all_settings_dictionary->SetWithoutPathExpansion("[*.]\xC4\x87ira.com,*",
                                                     dummy_payload);
  }
  profile.GetHostContentSettingsMap();

  const base::DictionaryValue* all_settings_dictionary =
      prefs->GetDictionary(prefs::kContentSettingsPatternPairs);
  const base::DictionaryValue* result = NULL;
  EXPECT_FALSE(all_settings_dictionary->GetDictionaryWithoutPathExpansion(
      "[*.]\xC4\x87ira.com,*", &result));
  EXPECT_TRUE(all_settings_dictionary->GetDictionaryWithoutPathExpansion(
      "[*.]xn--ira-ppa.com,*", &result));
}

// If both Unicode and its punycode pattern exist, make sure we don't touch the
// settings for the punycode, and that Unicode pattern gets deleted.
TEST_F(HostContentSettingsMapTest, CanonicalizeExceptionsUnicodeAndPunycode) {
  TestingProfile profile;

  scoped_ptr<base::Value> value(base::JSONReader::Read(
      "{\"[*.]\\xC4\\x87ira.com,*\":{\"images\":1}}"));
  profile.GetPrefs()->Set(prefs::kContentSettingsPatternPairs, *value);

  // Set punycode equivalent, with different setting.
  scoped_ptr<base::Value> puny_value(base::JSONReader::Read(
      "{\"[*.]xn--ira-ppa.com,*\":{\"images\":2}}"));
  profile.GetPrefs()->Set(prefs::kContentSettingsPatternPairs, *puny_value);

  // Initialize the content map.
  profile.GetHostContentSettingsMap();

  const base::DictionaryValue* content_setting_prefs =
      profile.GetPrefs()->GetDictionary(prefs::kContentSettingsPatternPairs);
  std::string prefs_as_json;
  base::JSONWriter::Write(content_setting_prefs, &prefs_as_json);
  EXPECT_STREQ("{\"[*.]xn--ira-ppa.com,*\":{\"images\":2}}",
               prefs_as_json.c_str());
}

// If a default-content-setting is managed, the managed value should be used
// instead of the default value.
TEST_F(HostContentSettingsMapTest, ManagedDefaultContentSetting) {
  TestingProfile profile;
  HostContentSettingsMap* host_content_settings_map =
      profile.GetHostContentSettingsMap();
  TestingPrefServiceSyncable* prefs = profile.GetTestingPrefService();

  EXPECT_EQ(CONTENT_SETTING_ALLOW,
            host_content_settings_map->GetDefaultContentSetting(
                CONTENT_SETTINGS_TYPE_JAVASCRIPT, NULL));

  // Set managed-default-content-setting through the coresponding preferences.
  prefs->SetManagedPref(prefs::kManagedDefaultJavaScriptSetting,
                        new base::FundamentalValue(CONTENT_SETTING_BLOCK));
  EXPECT_EQ(CONTENT_SETTING_BLOCK,
            host_content_settings_map->GetDefaultContentSetting(
                CONTENT_SETTINGS_TYPE_JAVASCRIPT, NULL));

  // Remove managed-default-content-settings-preferences.
  prefs->RemoveManagedPref(prefs::kManagedDefaultJavaScriptSetting);
  EXPECT_EQ(CONTENT_SETTING_ALLOW,
            host_content_settings_map->GetDefaultContentSetting(
                CONTENT_SETTINGS_TYPE_JAVASCRIPT, NULL));

  // Set preference to manage the default-content-setting for Plugins.
  prefs->SetManagedPref(prefs::kManagedDefaultPluginsSetting,
                        new base::FundamentalValue(CONTENT_SETTING_BLOCK));
  EXPECT_EQ(CONTENT_SETTING_BLOCK,
            host_content_settings_map->GetDefaultContentSetting(
                CONTENT_SETTINGS_TYPE_PLUGINS, NULL));

  // Remove the preference to manage the default-content-setting for Plugins.
  prefs->RemoveManagedPref(prefs::kManagedDefaultPluginsSetting);
  EXPECT_EQ(CONTENT_SETTING_ALLOW,
            host_content_settings_map->GetDefaultContentSetting(
                CONTENT_SETTINGS_TYPE_PLUGINS, NULL));
}

TEST_F(HostContentSettingsMapTest,
       GetNonDefaultContentSettingsIfTypeManaged) {
  TestingProfile profile;
  HostContentSettingsMap* host_content_settings_map =
      profile.GetHostContentSettingsMap();
  TestingPrefServiceSyncable* prefs = profile.GetTestingPrefService();

  // Set pattern for JavaScript setting.
  ContentSettingsPattern pattern =
       ContentSettingsPattern::FromString("[*.]example.com");
  host_content_settings_map->SetContentSetting(
      pattern,
      ContentSettingsPattern::Wildcard(),
      CONTENT_SETTINGS_TYPE_JAVASCRIPT,
      std::string(),
      CONTENT_SETTING_BLOCK);

  EXPECT_EQ(CONTENT_SETTING_ALLOW,
            host_content_settings_map->GetDefaultContentSetting(
                CONTENT_SETTINGS_TYPE_JAVASCRIPT, NULL));

  GURL host("http://example.com/");
  EXPECT_EQ(CONTENT_SETTING_BLOCK,
            host_content_settings_map->GetContentSetting(
                host, host, CONTENT_SETTINGS_TYPE_JAVASCRIPT, std::string()));

  // Set managed-default-content-setting for content-settings-type JavaScript.
  prefs->SetManagedPref(prefs::kManagedDefaultJavaScriptSetting,
                        new base::FundamentalValue(CONTENT_SETTING_ALLOW));
  EXPECT_EQ(CONTENT_SETTING_ALLOW,
            host_content_settings_map->GetContentSetting(
                host, host, CONTENT_SETTINGS_TYPE_JAVASCRIPT, std::string()));
}

// Managed default content setting should have higher priority
// than user defined patterns.
TEST_F(HostContentSettingsMapTest,
       ManagedDefaultContentSettingIgnoreUserPattern) {
  TestingProfile profile;
  HostContentSettingsMap* host_content_settings_map =
      profile.GetHostContentSettingsMap();
  TestingPrefServiceSyncable* prefs = profile.GetTestingPrefService();

  // Block all JavaScript.
  host_content_settings_map->SetDefaultContentSetting(
      CONTENT_SETTINGS_TYPE_JAVASCRIPT, CONTENT_SETTING_BLOCK);

  // Set an exception to allow "[*.]example.com"
  ContentSettingsPattern pattern =
      ContentSettingsPattern::FromString("[*.]example.com");

  host_content_settings_map->SetContentSetting(
      pattern,
      ContentSettingsPattern::Wildcard(),
      CONTENT_SETTINGS_TYPE_JAVASCRIPT,
      std::string(),
      CONTENT_SETTING_ALLOW);

  EXPECT_EQ(CONTENT_SETTING_BLOCK,
            host_content_settings_map->GetDefaultContentSetting(
                CONTENT_SETTINGS_TYPE_JAVASCRIPT, NULL));
  GURL host("http://example.com/");
  EXPECT_EQ(CONTENT_SETTING_ALLOW,
            host_content_settings_map->GetContentSetting(
                host, host, CONTENT_SETTINGS_TYPE_JAVASCRIPT, std::string()));

  // Set managed-default-content-settings-preferences.
  prefs->SetManagedPref(prefs::kManagedDefaultJavaScriptSetting,
                        new base::FundamentalValue(CONTENT_SETTING_BLOCK));
  EXPECT_EQ(CONTENT_SETTING_BLOCK,
            host_content_settings_map->GetContentSetting(
                host, host, CONTENT_SETTINGS_TYPE_JAVASCRIPT, std::string()));

  // Remove managed-default-content-settings-preferences.
  prefs->RemoveManagedPref(prefs::kManagedDefaultJavaScriptSetting);
  EXPECT_EQ(CONTENT_SETTING_ALLOW,
            host_content_settings_map->GetContentSetting(
                host, host, CONTENT_SETTINGS_TYPE_JAVASCRIPT, std::string()));
}

// If a default-content-setting is set to managed setting, the user defined
// setting should be preserved.
TEST_F(HostContentSettingsMapTest, OverwrittenDefaultContentSetting) {
  TestingProfile profile;
  HostContentSettingsMap* host_content_settings_map =
      profile.GetHostContentSettingsMap();
  TestingPrefServiceSyncable* prefs = profile.GetTestingPrefService();

  // Set user defined default-content-setting for Cookies.
  host_content_settings_map->SetDefaultContentSetting(
      CONTENT_SETTINGS_TYPE_COOKIES, CONTENT_SETTING_BLOCK);
  EXPECT_EQ(CONTENT_SETTING_BLOCK,
            host_content_settings_map->GetDefaultContentSetting(
                CONTENT_SETTINGS_TYPE_COOKIES, NULL));

  // Set preference to manage the default-content-setting for Cookies.
  prefs->SetManagedPref(prefs::kManagedDefaultCookiesSetting,
                        new base::FundamentalValue(CONTENT_SETTING_ALLOW));
  EXPECT_EQ(CONTENT_SETTING_ALLOW,
            host_content_settings_map->GetDefaultContentSetting(
                CONTENT_SETTINGS_TYPE_COOKIES, NULL));

  // Remove the preference to manage the default-content-setting for Cookies.
  prefs->RemoveManagedPref(prefs::kManagedDefaultCookiesSetting);
  EXPECT_EQ(CONTENT_SETTING_BLOCK,
            host_content_settings_map->GetDefaultContentSetting(
                CONTENT_SETTINGS_TYPE_COOKIES, NULL));
}

// If a setting for a default-content-setting-type is set while the type is
// managed, then the new setting should be preserved and used after the
// default-content-setting-type is not managed anymore.
TEST_F(HostContentSettingsMapTest, SettingDefaultContentSettingsWhenManaged) {
  TestingProfile profile;
  HostContentSettingsMap* host_content_settings_map =
      profile.GetHostContentSettingsMap();
  TestingPrefServiceSyncable* prefs = profile.GetTestingPrefService();

  prefs->SetManagedPref(prefs::kManagedDefaultPluginsSetting,
                        new base::FundamentalValue(CONTENT_SETTING_ALLOW));
  EXPECT_EQ(CONTENT_SETTING_ALLOW,
            host_content_settings_map->GetDefaultContentSetting(
                CONTENT_SETTINGS_TYPE_PLUGINS, NULL));

  host_content_settings_map->SetDefaultContentSetting(
      CONTENT_SETTINGS_TYPE_PLUGINS, CONTENT_SETTING_BLOCK);
  EXPECT_EQ(CONTENT_SETTING_ALLOW,
            host_content_settings_map->GetDefaultContentSetting(
                CONTENT_SETTINGS_TYPE_PLUGINS, NULL));

  prefs->RemoveManagedPref(prefs::kManagedDefaultPluginsSetting);
  EXPECT_EQ(CONTENT_SETTING_BLOCK,
            host_content_settings_map->GetDefaultContentSetting(
                CONTENT_SETTINGS_TYPE_PLUGINS, NULL));
}

TEST_F(HostContentSettingsMapTest, GetContentSetting) {
  TestingProfile profile;
  HostContentSettingsMap* host_content_settings_map =
      profile.GetHostContentSettingsMap();

  GURL host("http://example.com/");
  GURL embedder("chrome://foo");
  ContentSettingsPattern pattern =
       ContentSettingsPattern::FromString("[*.]example.com");
  host_content_settings_map->SetContentSetting(
      pattern,
      ContentSettingsPattern::Wildcard(),
      CONTENT_SETTINGS_TYPE_IMAGES,
      std::string(),
      CONTENT_SETTING_BLOCK);
  EXPECT_EQ(CONTENT_SETTING_BLOCK,
            host_content_settings_map->GetContentSetting(
                host, host, CONTENT_SETTINGS_TYPE_IMAGES, std::string()));
  EXPECT_EQ(CONTENT_SETTING_ALLOW,
            host_content_settings_map->GetContentSetting(
                embedder, host, CONTENT_SETTINGS_TYPE_IMAGES, std::string()));
}

TEST_F(HostContentSettingsMapTest, ShouldAllowAllContent) {
  GURL http_host("http://example.com/");
  GURL https_host("https://example.com/");
  GURL embedder("chrome://foo");
  GURL extension("chrome-extension://foo");
  EXPECT_FALSE(HostContentSettingsMap::ShouldAllowAllContent(
                   http_host, embedder, CONTENT_SETTINGS_TYPE_NOTIFICATIONS));
  EXPECT_FALSE(HostContentSettingsMap::ShouldAllowAllContent(
                   http_host, embedder, CONTENT_SETTINGS_TYPE_GEOLOCATION));
  EXPECT_FALSE(HostContentSettingsMap::ShouldAllowAllContent(
                   http_host, embedder, CONTENT_SETTINGS_TYPE_COOKIES));
  EXPECT_TRUE(HostContentSettingsMap::ShouldAllowAllContent(
                  https_host, embedder, CONTENT_SETTINGS_TYPE_COOKIES));
  EXPECT_TRUE(HostContentSettingsMap::ShouldAllowAllContent(
                  https_host, embedder, CONTENT_SETTINGS_TYPE_COOKIES));
  EXPECT_TRUE(HostContentSettingsMap::ShouldAllowAllContent(
                  embedder, http_host, CONTENT_SETTINGS_TYPE_COOKIES));
#if defined(ENABLE_EXTENSIONS)
  EXPECT_TRUE(HostContentSettingsMap::ShouldAllowAllContent(
                  extension, extension, CONTENT_SETTINGS_TYPE_COOKIES));
#else
  EXPECT_FALSE(HostContentSettingsMap::ShouldAllowAllContent(
                   extension, extension, CONTENT_SETTINGS_TYPE_COOKIES));
#endif
  EXPECT_FALSE(HostContentSettingsMap::ShouldAllowAllContent(
                   extension, extension, CONTENT_SETTINGS_TYPE_PLUGINS));
  EXPECT_FALSE(HostContentSettingsMap::ShouldAllowAllContent(
                   extension, http_host, CONTENT_SETTINGS_TYPE_COOKIES));
}

TEST_F(HostContentSettingsMapTest, IsSettingAllowedForType) {
  TestingProfile profile;
  PrefService* prefs = profile.GetPrefs();

  EXPECT_TRUE(HostContentSettingsMap::IsSettingAllowedForType(
                  prefs, CONTENT_SETTING_ASK,
                  CONTENT_SETTINGS_TYPE_FULLSCREEN));

  // TODO(msramek): Add more checks for setting type - setting pairs where
  // it is not obvious whether or not they are allowed.
}

TEST_F(HostContentSettingsMapTest, AddContentSettingsObserver) {
  TestingProfile profile;
  HostContentSettingsMap* host_content_settings_map =
      profile.GetHostContentSettingsMap();
  content_settings::MockObserver mock_observer;

  GURL host("http://example.com/");
  ContentSettingsPattern pattern =
      ContentSettingsPattern::FromString("[*.]example.com");
  EXPECT_CALL(mock_observer,
              OnContentSettingChanged(pattern,
                                      ContentSettingsPattern::Wildcard(),
                                      CONTENT_SETTINGS_TYPE_IMAGES,
                                      ""));

  host_content_settings_map->AddObserver(&mock_observer);

  EXPECT_EQ(CONTENT_SETTING_ALLOW,
            host_content_settings_map->GetContentSetting(
                host, host, CONTENT_SETTINGS_TYPE_IMAGES, std::string()));
  host_content_settings_map->SetContentSetting(
      pattern,
      ContentSettingsPattern::Wildcard(),
      CONTENT_SETTINGS_TYPE_IMAGES,
      std::string(),
      CONTENT_SETTING_DEFAULT);
}

TEST_F(HostContentSettingsMapTest, OverrideAllowedWebsiteSetting) {
  TestingProfile profile;
  HostContentSettingsMap* host_content_settings_map =
      profile.GetHostContentSettingsMap();
  GURL host("http://example.com/");
  ContentSettingsPattern pattern =
      ContentSettingsPattern::FromString("[*.]example.com");
  host_content_settings_map->SetContentSetting(
      pattern,
      ContentSettingsPattern::Wildcard(),
      CONTENT_SETTINGS_TYPE_GEOLOCATION,
      std::string(),
      CONTENT_SETTING_ALLOW);

  EXPECT_EQ(CONTENT_SETTING_ALLOW,
            host_content_settings_map->GetContentSetting(
                host, host, CONTENT_SETTINGS_TYPE_GEOLOCATION, std::string()));

  // Disabling should override an allowed exception.
  host_content_settings_map->SetContentSettingOverride(
      CONTENT_SETTINGS_TYPE_GEOLOCATION, false);
  EXPECT_EQ(CONTENT_SETTING_BLOCK,
            host_content_settings_map->GetContentSetting(
                host, host, CONTENT_SETTINGS_TYPE_GEOLOCATION, std::string()));

  host_content_settings_map->SetContentSettingOverride(
      CONTENT_SETTINGS_TYPE_GEOLOCATION, true);
  EXPECT_EQ(CONTENT_SETTING_ALLOW,
            host_content_settings_map->GetContentSetting(
                host, host, CONTENT_SETTINGS_TYPE_GEOLOCATION, std::string()));
}

TEST_F(HostContentSettingsMapTest, OverrideAllowedDefaultSetting) {
  TestingProfile profile;
  HostContentSettingsMap* host_content_settings_map =
      profile.GetHostContentSettingsMap();

  // Check setting defaults.
  EXPECT_EQ(CONTENT_SETTING_ALLOW,
            host_content_settings_map->GetDefaultContentSetting(
                CONTENT_SETTINGS_TYPE_IMAGES, NULL));

  GURL host("http://example.com/");
  EXPECT_EQ(CONTENT_SETTING_ALLOW,
            host_content_settings_map->GetContentSetting(
                host, host, CONTENT_SETTINGS_TYPE_IMAGES, std::string()));

  // Disabling should override an allowed default setting.
  host_content_settings_map->SetContentSettingOverride(
      CONTENT_SETTINGS_TYPE_IMAGES, false);
  EXPECT_EQ(CONTENT_SETTING_BLOCK,
            host_content_settings_map->GetContentSetting(
                host, host, CONTENT_SETTINGS_TYPE_IMAGES, std::string()));

  // Enabling shouldn't override positively.
  host_content_settings_map->SetContentSettingOverride(
      CONTENT_SETTINGS_TYPE_IMAGES, true);
  EXPECT_EQ(CONTENT_SETTING_ALLOW,
            host_content_settings_map->GetContentSetting(
                host, host, CONTENT_SETTINGS_TYPE_IMAGES, std::string()));
  host_content_settings_map->SetDefaultContentSetting(
      CONTENT_SETTINGS_TYPE_IMAGES, CONTENT_SETTING_BLOCK);
  EXPECT_EQ(CONTENT_SETTING_BLOCK,
            host_content_settings_map->GetContentSetting(
                host, host, CONTENT_SETTINGS_TYPE_IMAGES, std::string()));
}