Write last_modified date to Content Settings in the PrefProvider

chrome/browser/content_settings/content_settings_pref_provider_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 "components/content_settings/core/browser/content_settings_pref_provider.h"
 
 #include <memory>
 
 #include "base/auto_reset.h"
 #include "base/command_line.h"
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
 #include "base/message_loop/message_loop.h"
+#include "base/test/test_timeouts.h"
 #include "base/threading/platform_thread.h"
 #include "base/values.h"
 #include "chrome/browser/content_settings/content_settings_mock_observer.h"
 #include "chrome/browser/prefs/browser_prefs.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/url_constants.h"
 #include "chrome/test/base/testing_profile.h"
 #include "components/content_settings/core/browser/content_settings_pref.h"
 #include "components/content_settings/core/browser/content_settings_registry.h"
@@ skipping 83 matching lines @@
     // Ensure all content settings are initialized.
     ContentSettingsRegistry::GetInstance();
   }
 
  private:
   content::TestBrowserThreadBundle thread_bundle_;
 };
 
 TEST_F(PrefProviderTest, Observer) {
   TestingProfile profile;
-  PrefProvider pref_content_settings_provider(profile.GetPrefs(), false);
+  PrefProvider pref_content_settings_provider(profile.GetPrefs(),
+                                              false /* incognito */,
+                                              true /* store_last_modified */);
 
   ContentSettingsPattern pattern =
       ContentSettingsPattern::FromString("[*.]example.com");
   MockObserver mock_observer;
   EXPECT_CALL(mock_observer, OnContentSettingChanged(
                                  pattern, ContentSettingsPattern::Wildcard(),
                                  CONTENT_SETTINGS_TYPE_COOKIES, ""));
 
   pref_content_settings_provider.AddObserver(&mock_observer);
 
@@ skipping 27 matching lines @@
   data_for_pattern->SetInteger("setting", CONTENT_SETTING_ALLOW);
   pref_data.SetWithoutPathExpansion(kPattern, std::move(data_for_pattern));
   prefs->Set(kFullscreenPrefPath, pref_data);
 #if !defined(OS_ANDROID)
   prefs->Set(kMouselockPrefPath, pref_data);
 #endif
   prefs->Set(kGeolocationPrefPath, pref_data);
 
   // Instantiate a new PrefProvider here, because we want to test the
   // constructor's behavior after setting the above.
-  PrefProvider provider(prefs, false);
+  PrefProvider provider(prefs, false /* incognito */,
+                        true /* store_last_modified */);
   provider.ShutdownOnUIThread();
 
   // Check that fullscreen and mouselock have been deleted.
   EXPECT_FALSE(prefs->HasPrefPath(kFullscreenPrefPath));
 #if !defined(OS_ANDROID)
   EXPECT_FALSE(prefs->HasPrefPath(kMouselockPrefPath));
 #endif
   EXPECT_TRUE(prefs->HasPrefPath(kGeolocationPrefPath));
   GURL primary_url("http://example.com/");
   EXPECT_EQ(CONTENT_SETTING_ALLOW,
@@ skipping 37 matching lines @@
 
   auto mic_pattern_data = base::MakeUnique<base::DictionaryValue>();
   mic_pattern_data->SetInteger("setting", CONTENT_SETTING_ALLOW);
   mic_pattern_data->SetDouble(kObsoleteLastUsed, 1480000000.0);
   base::DictionaryValue mic_pref_data;
   mic_pref_data.SetWithoutPathExpansion(kPattern, std::move(mic_pattern_data));
   prefs->Set(kMicPrefPath, mic_pref_data);
 
   // Instantiate a new PrefProvider here, because we want to test the
   // constructor's behavior after setting the above.
-  PrefProvider provider(prefs, false);
+  PrefProvider provider(prefs, false /* incognito */,
+                        true /* store_last_modified */);
 
   // Check that last_used data has been deleted.
   EXPECT_TRUE(prefs->GetDictionary(kGeolocationPrefPath)->empty());
   auto* mic_prefs = prefs->GetDictionary(kMicPrefPath);
   const base::DictionaryValue* mic_result_pattern_data;
   ASSERT_TRUE(mic_prefs->GetDictionaryWithoutPathExpansion(
       kPattern, &mic_result_pattern_data));
   EXPECT_EQ(static_cast<size_t>(1), mic_result_pattern_data->size());
   int mic_result_setting;
   EXPECT_TRUE(
@@ skipping 32 matching lines @@
   chrome::RegisterUserProfilePrefs(otr_registry.get());
 
   TestingProfile::Builder profile_builder;
   profile_builder.SetPrefService(base::WrapUnique(regular_prefs));
   std::unique_ptr<TestingProfile> profile = profile_builder.Build();
 
   TestingProfile::Builder otr_profile_builder;
   otr_profile_builder.SetPrefService(base::WrapUnique(otr_prefs));
   otr_profile_builder.BuildIncognito(profile.get());
 
-  PrefProvider pref_content_settings_provider(regular_prefs, false);
-  PrefProvider pref_content_settings_provider_incognito(otr_prefs, true);
+  PrefProvider pref_content_settings_provider(
+      regular_prefs, false /* incognito */, true /* store_last_modified */);
+  PrefProvider pref_content_settings_provider_incognito(
+      otr_prefs, true /* incognito */, true /* store_last_modified */);
   ContentSettingsPattern pattern =
       ContentSettingsPattern::FromString("[*.]example.com");
   pref_content_settings_provider.SetWebsiteSetting(
       pattern, pattern, CONTENT_SETTINGS_TYPE_COOKIES, std::string(),
       new base::Value(CONTENT_SETTING_ALLOW));
 
   GURL host("http://example.com/");
   // The value should of course be visible in the regular PrefProvider.
   EXPECT_EQ(CONTENT_SETTING_ALLOW,
             TestUtils::GetContentSetting(&pref_content_settings_provider, host,
                                          host, CONTENT_SETTINGS_TYPE_COOKIES,
                                          std::string(), false));
   // And also in the OTR version.
   EXPECT_EQ(CONTENT_SETTING_ALLOW,
             TestUtils::GetContentSetting(
                 &pref_content_settings_provider_incognito, host, host,
                 CONTENT_SETTINGS_TYPE_COOKIES, std::string(), false));
   const WebsiteSettingsInfo* info = WebsiteSettingsRegistry::GetInstance()->Get(
       CONTENT_SETTINGS_TYPE_COOKIES);
   // But the value should not be overridden in the OTR user prefs accidentally.
   EXPECT_FALSE(otr_user_prefs->IsSetInOverlay(info->pref_name()));
 
   pref_content_settings_provider.ShutdownOnUIThread();
   pref_content_settings_provider_incognito.ShutdownOnUIThread();
 }
 
 TEST_F(PrefProviderTest, GetContentSettingsValue) {
   TestingProfile testing_profile;
-  PrefProvider provider(testing_profile.GetPrefs(), false);
+  PrefProvider provider(testing_profile.GetPrefs(), false /* incognito */,
+                        true /* store_last_modified */);
 
   GURL primary_url("http://example.com/");
   ContentSettingsPattern primary_pattern =
       ContentSettingsPattern::FromString("[*.]example.com");
 
   EXPECT_EQ(CONTENT_SETTING_DEFAULT,
             TestUtils::GetContentSetting(&provider, primary_url, primary_url,
                                          CONTENT_SETTINGS_TYPE_COOKIES,
                                          std::string(), false));
 
@@ skipping 20 matching lines @@
                              NULL);
   EXPECT_EQ(NULL, TestUtils::GetContentSettingValue(
                       &provider, primary_url, primary_url,
                       CONTENT_SETTINGS_TYPE_COOKIES, std::string(), false));
   provider.ShutdownOnUIThread();
 }
 
 TEST_F(PrefProviderTest, Patterns) {
   TestingProfile testing_profile;
   PrefProvider pref_content_settings_provider(testing_profile.GetPrefs(),
-                                              false);
+                                              false /* incognito */,
+                                              true /* store_last_modified */);
 
   GURL host1("http://example.com/");
   GURL host2("http://www.example.com/");
   GURL host3("http://example.org/");
   GURL host4("file:///tmp/test.html");
   ContentSettingsPattern pattern1 =
       ContentSettingsPattern::FromString("[*.]example.com");
   ContentSettingsPattern pattern2 =
       ContentSettingsPattern::FromString("example.org");
   ContentSettingsPattern pattern3 =
@@ skipping 39 matching lines @@
                                          host4, CONTENT_SETTINGS_TYPE_COOKIES,
                                          std::string(), false));
 
   pref_content_settings_provider.ShutdownOnUIThread();
 }
 
 #if BUILDFLAG(ENABLE_PLUGINS)
 TEST_F(PrefProviderTest, ResourceIdentifier) {
   TestingProfile testing_profile;
   PrefProvider pref_content_settings_provider(testing_profile.GetPrefs(),
-                                              false);
+                                              false /* incognito */,
+                                              true /* store_last_modified */);
 
   GURL host("http://example.com/");
   ContentSettingsPattern pattern =
       ContentSettingsPattern::FromString("[*.]example.com");
   std::string resource1("someplugin");
   std::string resource2("otherplugin");
 
   EXPECT_EQ(CONTENT_SETTING_DEFAULT,
             TestUtils::GetContentSetting(&pref_content_settings_provider, host,
                                          host, CONTENT_SETTINGS_TYPE_PLUGINS,
@@ skipping 19 matching lines @@
   sync_preferences::TestingPrefServiceSyncable prefs;
   PrefProvider::RegisterProfilePrefs(prefs.registry());
 
   // Chain of events: a preference changes, |PrefProvider| notices it, and reads
   // and writes the preference. When the preference is written, a notification
   // is sent, and this used to happen when |PrefProvider| was still holding its
   // lock.
 
   const WebsiteSettingsInfo* info = WebsiteSettingsRegistry::GetInstance()->Get(
       CONTENT_SETTINGS_TYPE_COOKIES);
-  PrefProvider provider(&prefs, false);
+  PrefProvider provider(&prefs, false /* incognito */,
+                        true /* store_last_modified */);
   DeadlockCheckerObserver observer(&prefs, &provider);
   {
     DictionaryPrefUpdate update(&prefs, info->pref_name());
     base::DictionaryValue* mutable_settings = update.Get();
     mutable_settings->SetWithoutPathExpansion(
         "www.example.com,*", base::MakeUnique<base::DictionaryValue>());
   }
   EXPECT_TRUE(observer.notification_received());
 
   provider.ShutdownOnUIThread();
 }
 
 TEST_F(PrefProviderTest, IncognitoInheritsValueMap) {
   sync_preferences::TestingPrefServiceSyncable prefs;
   PrefProvider::RegisterProfilePrefs(prefs.registry());
 
   ContentSettingsPattern pattern_1 =
       ContentSettingsPattern::FromString("google.com");
   ContentSettingsPattern pattern_2 =
       ContentSettingsPattern::FromString("www.google.com");
   ContentSettingsPattern wildcard =
       ContentSettingsPattern::FromString("*");
   std::unique_ptr<base::Value> value(new base::Value(CONTENT_SETTING_ALLOW));
 
   // Create a normal provider and set a setting.
-  PrefProvider normal_provider(&prefs, false);
+  PrefProvider normal_provider(&prefs, false /* incognito */,
+                               true /* store_last_modified */);
   normal_provider.SetWebsiteSetting(pattern_1, wildcard,
                                     CONTENT_SETTINGS_TYPE_COOKIES,
                                     std::string(), value->DeepCopy());
 
   // Non-OTR provider, Non-OTR iterator has one setting (pattern 1).
   {
     std::unique_ptr<RuleIterator> it(normal_provider.GetRuleIterator(
         CONTENT_SETTINGS_TYPE_COOKIES, std::string(), false));
     EXPECT_TRUE(it->HasNext());
     EXPECT_EQ(pattern_1, it->Next().primary_pattern);
     EXPECT_FALSE(it->HasNext());
   }
 
   // Non-OTR provider, OTR iterator has no settings.
   {
     std::unique_ptr<RuleIterator> it(normal_provider.GetRuleIterator(
         CONTENT_SETTINGS_TYPE_COOKIES, std::string(), true));
     EXPECT_FALSE(it);
   }
 
   // Create an incognito provider and set a setting.
-  PrefProvider incognito_provider(&prefs, true);
+  PrefProvider incognito_provider(&prefs, true /* incognito */,
+                                  true /* store_last_modified */);
   incognito_provider.SetWebsiteSetting(pattern_2, wildcard,
                                        CONTENT_SETTINGS_TYPE_COOKIES,
                                        std::string(), value->DeepCopy());
 
   // OTR provider, non-OTR iterator has one setting (pattern 1).
   {
     std::unique_ptr<RuleIterator> it(incognito_provider.GetRuleIterator(
         CONTENT_SETTINGS_TYPE_COOKIES, std::string(), false));
     EXPECT_TRUE(it->HasNext());
     EXPECT_EQ(pattern_1, it->Next().primary_pattern);
@@ skipping 17 matching lines @@
   sync_preferences::TestingPrefServiceSyncable prefs;
   PrefProvider::RegisterProfilePrefs(prefs.registry());
 
   ContentSettingsPattern pattern =
       ContentSettingsPattern::FromString("google.com");
   ContentSettingsPattern wildcard =
       ContentSettingsPattern::FromString("*");
   std::unique_ptr<base::Value> value(new base::Value(CONTENT_SETTING_ALLOW));
   ResourceIdentifier res_id("abcde");
 
-  PrefProvider provider(&prefs, false);
+  PrefProvider provider(&prefs, false /* incognito */,
+                        true /* store_last_modified */);
 
   // Non-empty pattern, syncable, empty resource identifier.
   provider.SetWebsiteSetting(pattern, wildcard,
                              CONTENT_SETTINGS_TYPE_JAVASCRIPT,
                              ResourceIdentifier(), value->DeepCopy());
 
   // Non-empty pattern, non-syncable, empty resource identifier.
   provider.SetWebsiteSetting(pattern, wildcard,
                              CONTENT_SETTINGS_TYPE_GEOLOCATION,
                              ResourceIdentifier(), value->DeepCopy());
@@ skipping 45 matching lines @@
 
   for (const char* pref : nonempty_prefs) {
     DictionaryPrefUpdate update(&prefs, pref);
     const base::DictionaryValue* dictionary = update.Get();
     EXPECT_EQ(1u, dictionary->size());
   }
 
   provider.ShutdownOnUIThread();
 }
 
+TEST_F(PrefProviderTest, LastModified) {
+  sync_preferences::TestingPrefServiceSyncable prefs;
+  PrefProvider::RegisterProfilePrefs(prefs.registry());
+
+  ContentSettingsPattern pattern_1 =
+      ContentSettingsPattern::FromString("google.com");
+  ContentSettingsPattern pattern_2 =
+      ContentSettingsPattern::FromString("www.google.com");
+  auto value = base::MakeUnique<base::Value>(CONTENT_SETTING_ALLOW);
+
+  base::Time t1 = base::Time::Now();
+
+  // Create a  provider and set a few settings.
+  PrefProvider provider(&prefs, false /* incognito */,
+                        true /* store_last_modified */);
+  provider.SetWebsiteSetting(pattern_1, ContentSettingsPattern::Wildcard(),
+                             CONTENT_SETTINGS_TYPE_COOKIES, std::string(),
+                             value->DeepCopy());
+  provider.SetWebsiteSetting(pattern_2, ContentSettingsPattern::Wildcard(),
+                             CONTENT_SETTINGS_TYPE_COOKIES, std::string(),
+                             value->DeepCopy());
+  // Make sure that the timestamps for pattern_1 and patter_2 are before |t2|.
+  base::PlatformThread::Sleep(TestTimeouts::tiny_timeout());
+  base::Time t2 = base::Time::Now();
+
+  base::Time last_modified = provider.GetWebsiteSettingLastModified(
+      pattern_1, ContentSettingsPattern::Wildcard(),
+      CONTENT_SETTINGS_TYPE_COOKIES, std::string());
+  EXPECT_GE(last_modified, t1);
+  EXPECT_LT(last_modified, t2);
+  last_modified = provider.GetWebsiteSettingLastModified(
+      pattern_2, ContentSettingsPattern::Wildcard(),
+      CONTENT_SETTINGS_TYPE_COOKIES, std::string());
+  EXPECT_GE(last_modified, t1);
+  EXPECT_LT(last_modified, t2);
+
+  // A change for pattern_1, which will update the last_modified timestamp.
+  auto value2 = base::MakeUnique<base::Value>(CONTENT_SETTING_BLOCK);
+  provider.SetWebsiteSetting(pattern_1, ContentSettingsPattern::Wildcard(),
+                             CONTENT_SETTINGS_TYPE_COOKIES, std::string(),
+                             value2->DeepCopy());
+
+  last_modified = provider.GetWebsiteSettingLastModified(
+      pattern_1, ContentSettingsPattern::Wildcard(),
+      CONTENT_SETTINGS_TYPE_COOKIES, std::string());
+  EXPECT_GE(last_modified, t2);
+
+  // The timestamp of pattern_2 shouldn't change.
+  last_modified = provider.GetWebsiteSettingLastModified(
+      pattern_2, ContentSettingsPattern::Wildcard(),
+      CONTENT_SETTINGS_TYPE_COOKIES, std::string());
+  EXPECT_GE(last_modified, t1);
+  EXPECT_LT(last_modified, t2);
+
+  provider.ShutdownOnUIThread();
+}
+
 }  // namespace content_settings