Revert of Move base/prefs to components/prefs

components/prefs/pref_service_unittest.cc

Index: components/prefs/pref_service_unittest.cc
diff --git a/components/prefs/pref_service_unittest.cc b/components/prefs/pref_service_unittest.cc
deleted file mode 100644
index 649c35fcf7fe9657d78743f013f30d3fb20e9ec6..0000000000000000000000000000000000000000
--- a/components/prefs/pref_service_unittest.cc
+++ /dev/null
@@ -1,430 +0,0 @@
-// 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 <stddef.h>
-#include <stdint.h>
-
-#include <string>
-
-#include "base/macros.h"
-#include "base/prefs/json_pref_store.h"
-#include "base/prefs/mock_pref_change_callback.h"
-#include "base/prefs/pref_change_registrar.h"
-#include "base/prefs/pref_registry_simple.h"
-#include "base/prefs/pref_service_factory.h"
-#include "base/prefs/pref_value_store.h"
-#include "base/prefs/testing_pref_service.h"
-#include "base/prefs/testing_pref_store.h"
-#include "base/values.h"
-#include "testing/gmock/include/gmock/gmock.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-using testing::_;
-using testing::Mock;
-
-const char kPrefName[] = "pref.name";
-
-TEST(PrefServiceTest, NoObserverFire) {
-  TestingPrefServiceSimple prefs;
-
-  const char pref_name[] = "homepage";
-  prefs.registry()->RegisterStringPref(pref_name, std::string());
-
-  const char new_pref_value[] = "http://www.google.com/";
-  MockPrefChangeCallback obs(&prefs);
-  PrefChangeRegistrar registrar;
-  registrar.Init(&prefs);
-  registrar.Add(pref_name, obs.GetCallback());
-
-  // This should fire the checks in MockPrefChangeCallback::OnPreferenceChanged.
-  const base::StringValue expected_value(new_pref_value);
-  obs.Expect(pref_name, &expected_value);
-  prefs.SetString(pref_name, new_pref_value);
-  Mock::VerifyAndClearExpectations(&obs);
-
-  // Setting the pref to the same value should not set the pref value a second
-  // time.
-  EXPECT_CALL(obs, OnPreferenceChanged(_)).Times(0);
-  prefs.SetString(pref_name, new_pref_value);
-  Mock::VerifyAndClearExpectations(&obs);
-
-  // Clearing the pref should cause the pref to fire.
-  const base::StringValue expected_default_value((std::string()));
-  obs.Expect(pref_name, &expected_default_value);
-  prefs.ClearPref(pref_name);
-  Mock::VerifyAndClearExpectations(&obs);
-
-  // Clearing the pref again should not cause the pref to fire.
-  EXPECT_CALL(obs, OnPreferenceChanged(_)).Times(0);
-  prefs.ClearPref(pref_name);
-  Mock::VerifyAndClearExpectations(&obs);
-}
-
-TEST(PrefServiceTest, HasPrefPath) {
-  TestingPrefServiceSimple prefs;
-
-  const char path[] = "fake.path";
-
-  // Shouldn't initially have a path.
-  EXPECT_FALSE(prefs.HasPrefPath(path));
-
-  // Register the path. This doesn't set a value, so the path still shouldn't
-  // exist.
-  prefs.registry()->RegisterStringPref(path, std::string());
-  EXPECT_FALSE(prefs.HasPrefPath(path));
-
-  // Set a value and make sure we have a path.
-  prefs.SetString(path, "blah");
-  EXPECT_TRUE(prefs.HasPrefPath(path));
-}
-
-TEST(PrefServiceTest, Observers) {
-  const char pref_name[] = "homepage";
-
-  TestingPrefServiceSimple prefs;
-  prefs.SetUserPref(pref_name,
-                    new base::StringValue("http://www.cnn.com"));
-  prefs.registry()->RegisterStringPref(pref_name, std::string());
-
-  const char new_pref_value[] = "http://www.google.com/";
-  const base::StringValue expected_new_pref_value(new_pref_value);
-  MockPrefChangeCallback obs(&prefs);
-  PrefChangeRegistrar registrar;
-  registrar.Init(&prefs);
-  registrar.Add(pref_name, obs.GetCallback());
-
-  PrefChangeRegistrar registrar_two;
-  registrar_two.Init(&prefs);
-
-  // This should fire the checks in MockPrefChangeCallback::OnPreferenceChanged.
-  obs.Expect(pref_name, &expected_new_pref_value);
-  prefs.SetString(pref_name, new_pref_value);
-  Mock::VerifyAndClearExpectations(&obs);
-
-  // Now try adding a second pref observer.
-  const char new_pref_value2[] = "http://www.youtube.com/";
-  const base::StringValue expected_new_pref_value2(new_pref_value2);
-  MockPrefChangeCallback obs2(&prefs);
-  obs.Expect(pref_name, &expected_new_pref_value2);
-  obs2.Expect(pref_name, &expected_new_pref_value2);
-  registrar_two.Add(pref_name, obs2.GetCallback());
-  // This should fire the checks in obs and obs2.
-  prefs.SetString(pref_name, new_pref_value2);
-  Mock::VerifyAndClearExpectations(&obs);
-  Mock::VerifyAndClearExpectations(&obs2);
-
-  // Set a recommended value.
-  const base::StringValue recommended_pref_value("http://www.gmail.com/");
-  obs.Expect(pref_name, &expected_new_pref_value2);
-  obs2.Expect(pref_name, &expected_new_pref_value2);
-  // This should fire the checks in obs and obs2 but with an unchanged value
-  // as the recommended value is being overridden by the user-set value.
-  prefs.SetRecommendedPref(pref_name, recommended_pref_value.DeepCopy());
-  Mock::VerifyAndClearExpectations(&obs);
-  Mock::VerifyAndClearExpectations(&obs2);
-
-  // Make sure obs2 still works after removing obs.
-  registrar.Remove(pref_name);
-  EXPECT_CALL(obs, OnPreferenceChanged(_)).Times(0);
-  obs2.Expect(pref_name, &expected_new_pref_value);
-  // This should only fire the observer in obs2.
-  prefs.SetString(pref_name, new_pref_value);
-  Mock::VerifyAndClearExpectations(&obs);
-  Mock::VerifyAndClearExpectations(&obs2);
-}
-
-// Make sure that if a preference changes type, so the wrong type is stored in
-// the user pref file, it uses the correct fallback value instead.
-TEST(PrefServiceTest, GetValueChangedType) {
-  const int kTestValue = 10;
-  TestingPrefServiceSimple prefs;
-  prefs.registry()->RegisterIntegerPref(kPrefName, kTestValue);
-
-  // Check falling back to a recommended value.
-  prefs.SetUserPref(kPrefName,
-                    new base::StringValue("not an integer"));
-  const PrefService::Preference* pref = prefs.FindPreference(kPrefName);
-  ASSERT_TRUE(pref);
-  const base::Value* value = pref->GetValue();
-  ASSERT_TRUE(value);
-  EXPECT_EQ(base::Value::TYPE_INTEGER, value->GetType());
-  int actual_int_value = -1;
-  EXPECT_TRUE(value->GetAsInteger(&actual_int_value));
-  EXPECT_EQ(kTestValue, actual_int_value);
-}
-
-TEST(PrefServiceTest, GetValueAndGetRecommendedValue) {
-  const int kDefaultValue = 5;
-  const int kUserValue = 10;
-  const int kRecommendedValue = 15;
-  TestingPrefServiceSimple prefs;
-  prefs.registry()->RegisterIntegerPref(kPrefName, kDefaultValue);
-
-  // Create pref with a default value only.
-  const PrefService::Preference* pref = prefs.FindPreference(kPrefName);
-  ASSERT_TRUE(pref);
-
-  // Check that GetValue() returns the default value.
-  const base::Value* value = pref->GetValue();
-  ASSERT_TRUE(value);
-  EXPECT_EQ(base::Value::TYPE_INTEGER, value->GetType());
-  int actual_int_value = -1;
-  EXPECT_TRUE(value->GetAsInteger(&actual_int_value));
-  EXPECT_EQ(kDefaultValue, actual_int_value);
-
-  // Check that GetRecommendedValue() returns no value.
-  value = pref->GetRecommendedValue();
-  ASSERT_FALSE(value);
-
-  // Set a user-set value.
-  prefs.SetUserPref(kPrefName, new base::FundamentalValue(kUserValue));
-
-  // Check that GetValue() returns the user-set value.
-  value = pref->GetValue();
-  ASSERT_TRUE(value);
-  EXPECT_EQ(base::Value::TYPE_INTEGER, value->GetType());
-  actual_int_value = -1;
-  EXPECT_TRUE(value->GetAsInteger(&actual_int_value));
-  EXPECT_EQ(kUserValue, actual_int_value);
-
-  // Check that GetRecommendedValue() returns no value.
-  value = pref->GetRecommendedValue();
-  ASSERT_FALSE(value);
-
-  // Set a recommended value.
-  prefs.SetRecommendedPref(kPrefName,
-                           new base::FundamentalValue(kRecommendedValue));
-
-  // Check that GetValue() returns the user-set value.
-  value = pref->GetValue();
-  ASSERT_TRUE(value);
-  EXPECT_EQ(base::Value::TYPE_INTEGER, value->GetType());
-  actual_int_value = -1;
-  EXPECT_TRUE(value->GetAsInteger(&actual_int_value));
-  EXPECT_EQ(kUserValue, actual_int_value);
-
-  // Check that GetRecommendedValue() returns the recommended value.
-  value = pref->GetRecommendedValue();
-  ASSERT_TRUE(value);
-  EXPECT_EQ(base::Value::TYPE_INTEGER, value->GetType());
-  actual_int_value = -1;
-  EXPECT_TRUE(value->GetAsInteger(&actual_int_value));
-  EXPECT_EQ(kRecommendedValue, actual_int_value);
-
-  // Remove the user-set value.
-  prefs.RemoveUserPref(kPrefName);
-
-  // Check that GetValue() returns the recommended value.
-  value = pref->GetValue();
-  ASSERT_TRUE(value);
-  EXPECT_EQ(base::Value::TYPE_INTEGER, value->GetType());
-  actual_int_value = -1;
-  EXPECT_TRUE(value->GetAsInteger(&actual_int_value));
-  EXPECT_EQ(kRecommendedValue, actual_int_value);
-
-  // Check that GetRecommendedValue() returns the recommended value.
-  value = pref->GetRecommendedValue();
-  ASSERT_TRUE(value);
-  EXPECT_EQ(base::Value::TYPE_INTEGER, value->GetType());
-  actual_int_value = -1;
-  EXPECT_TRUE(value->GetAsInteger(&actual_int_value));
-  EXPECT_EQ(kRecommendedValue, actual_int_value);
-}
-
-// A PrefStore which just stores the last write flags that were used to write
-// values to it.
-class WriteFlagChecker : public TestingPrefStore {
- public:
-  WriteFlagChecker() {}
-
-  void ReportValueChanged(const std::string& key, uint32_t flags) override {
-    SetLastWriteFlags(flags);
-  }
-
-  void SetValue(const std::string& key,
-                scoped_ptr<base::Value> value,
-                uint32_t flags) override {
-    SetLastWriteFlags(flags);
-  }
-
-  void SetValueSilently(const std::string& key,
-                        scoped_ptr<base::Value> value,
-                        uint32_t flags) override {
-    SetLastWriteFlags(flags);
-  }
-
-  void RemoveValue(const std::string& key, uint32_t flags) override {
-    SetLastWriteFlags(flags);
-  }
-
-  uint32_t GetLastFlagsAndClear() {
-    CHECK(last_write_flags_set_);
-    uint32_t result = last_write_flags_;
-    last_write_flags_set_ = false;
-    last_write_flags_ = WriteablePrefStore::DEFAULT_PREF_WRITE_FLAGS;
-    return result;
-  }
-
-  bool last_write_flags_set() { return last_write_flags_set_; }
-
- private:
-  ~WriteFlagChecker() override {}
-
-  void SetLastWriteFlags(uint32_t flags) {
-    CHECK(!last_write_flags_set_);
-    last_write_flags_set_ = true;
-    last_write_flags_ = flags;
-  }
-
-  bool last_write_flags_set_ = false;
-  uint32_t last_write_flags_ = WriteablePrefStore::DEFAULT_PREF_WRITE_FLAGS;
-};
-
-TEST(PrefServiceTest, WriteablePrefStoreFlags) {
-  scoped_refptr<WriteFlagChecker> flag_checker(new WriteFlagChecker);
-  scoped_refptr<PrefRegistrySimple> registry(new PrefRegistrySimple);
-  base::PrefServiceFactory factory;
-  factory.set_user_prefs(flag_checker);
-  scoped_ptr<PrefService> prefs(factory.Create(registry.get()));
-
-  // The first 8 bits of write flags are reserved for subclasses. Create a
-  // custom flag in this range
-  uint32_t kCustomRegistrationFlag = 1 << 2;
-
-  // A map of the registration flags that will be tested and the write flags
-  // they are expected to convert to.
-  struct RegistrationToWriteFlags {
-    const char* pref_name;
-    uint32_t registration_flags;
-    uint32_t write_flags;
-  };
-  const RegistrationToWriteFlags kRegistrationToWriteFlags[] = {
-      {"none",
-       PrefRegistry::NO_REGISTRATION_FLAGS,
-       WriteablePrefStore::DEFAULT_PREF_WRITE_FLAGS},
-      {"lossy",
-       PrefRegistry::LOSSY_PREF,
-       WriteablePrefStore::LOSSY_PREF_WRITE_FLAG},
-      {"custom",
-       kCustomRegistrationFlag,
-       WriteablePrefStore::DEFAULT_PREF_WRITE_FLAGS},
-      {"lossyandcustom",
-       PrefRegistry::LOSSY_PREF | kCustomRegistrationFlag,
-       WriteablePrefStore::LOSSY_PREF_WRITE_FLAG}};
-
-  for (size_t i = 0; i < arraysize(kRegistrationToWriteFlags); ++i) {
-    RegistrationToWriteFlags entry = kRegistrationToWriteFlags[i];
-    registry->RegisterDictionaryPref(
-        entry.pref_name, new base::DictionaryValue(), entry.registration_flags);
-
-    SCOPED_TRACE("Currently testing pref with name: " +
-                 std::string(entry.pref_name));
-
-    prefs->GetMutableUserPref(entry.pref_name, base::Value::TYPE_DICTIONARY);
-    EXPECT_TRUE(flag_checker->last_write_flags_set());
-    EXPECT_EQ(entry.write_flags, flag_checker->GetLastFlagsAndClear());
-
-    prefs->ReportUserPrefChanged(entry.pref_name);
-    EXPECT_TRUE(flag_checker->last_write_flags_set());
-    EXPECT_EQ(entry.write_flags, flag_checker->GetLastFlagsAndClear());
-
-    prefs->ClearPref(entry.pref_name);
-    EXPECT_TRUE(flag_checker->last_write_flags_set());
-    EXPECT_EQ(entry.write_flags, flag_checker->GetLastFlagsAndClear());
-
-    prefs->SetUserPrefValue(entry.pref_name, new base::DictionaryValue());
-    EXPECT_TRUE(flag_checker->last_write_flags_set());
-    EXPECT_EQ(entry.write_flags, flag_checker->GetLastFlagsAndClear());
-  }
-}
-
-class PrefServiceSetValueTest : public testing::Test {
- protected:
-  static const char kName[];
-  static const char kValue[];
-
-  PrefServiceSetValueTest() : observer_(&prefs_) {}
-
-  TestingPrefServiceSimple prefs_;
-  MockPrefChangeCallback observer_;
-};
-
-const char PrefServiceSetValueTest::kName[] = "name";
-const char PrefServiceSetValueTest::kValue[] = "value";
-
-TEST_F(PrefServiceSetValueTest, SetStringValue) {
-  const char default_string[] = "default";
-  const base::StringValue default_value(default_string);
-  prefs_.registry()->RegisterStringPref(kName, default_string);
-
-  PrefChangeRegistrar registrar;
-  registrar.Init(&prefs_);
-  registrar.Add(kName, observer_.GetCallback());
-
-  // Changing the controlling store from default to user triggers notification.
-  observer_.Expect(kName, &default_value);
-  prefs_.Set(kName, default_value);
-  Mock::VerifyAndClearExpectations(&observer_);
-
-  EXPECT_CALL(observer_, OnPreferenceChanged(_)).Times(0);
-  prefs_.Set(kName, default_value);
-  Mock::VerifyAndClearExpectations(&observer_);
-
-  base::StringValue new_value(kValue);
-  observer_.Expect(kName, &new_value);
-  prefs_.Set(kName, new_value);
-  Mock::VerifyAndClearExpectations(&observer_);
-}
-
-TEST_F(PrefServiceSetValueTest, SetDictionaryValue) {
-  prefs_.registry()->RegisterDictionaryPref(kName);
-  PrefChangeRegistrar registrar;
-  registrar.Init(&prefs_);
-  registrar.Add(kName, observer_.GetCallback());
-
-  EXPECT_CALL(observer_, OnPreferenceChanged(_)).Times(0);
-  prefs_.RemoveUserPref(kName);
-  Mock::VerifyAndClearExpectations(&observer_);
-
-  base::DictionaryValue new_value;
-  new_value.SetString(kName, kValue);
-  observer_.Expect(kName, &new_value);
-  prefs_.Set(kName, new_value);
-  Mock::VerifyAndClearExpectations(&observer_);
-
-  EXPECT_CALL(observer_, OnPreferenceChanged(_)).Times(0);
-  prefs_.Set(kName, new_value);
-  Mock::VerifyAndClearExpectations(&observer_);
-
-  base::DictionaryValue empty;
-  observer_.Expect(kName, &empty);
-  prefs_.Set(kName, empty);
-  Mock::VerifyAndClearExpectations(&observer_);
-}
-
-TEST_F(PrefServiceSetValueTest, SetListValue) {
-  prefs_.registry()->RegisterListPref(kName);
-  PrefChangeRegistrar registrar;
-  registrar.Init(&prefs_);
-  registrar.Add(kName, observer_.GetCallback());
-
-  EXPECT_CALL(observer_, OnPreferenceChanged(_)).Times(0);
-  prefs_.RemoveUserPref(kName);
-  Mock::VerifyAndClearExpectations(&observer_);
-
-  base::ListValue new_value;
-  new_value.Append(new base::StringValue(kValue));
-  observer_.Expect(kName, &new_value);
-  prefs_.Set(kName, new_value);
-  Mock::VerifyAndClearExpectations(&observer_);
-
-  EXPECT_CALL(observer_, OnPreferenceChanged(_)).Times(0);
-  prefs_.Set(kName, new_value);
-  Mock::VerifyAndClearExpectations(&observer_);
-
-  base::ListValue empty;
-  observer_.Expect(kName, &empty);
-  prefs_.Set(kName, empty);
-  Mock::VerifyAndClearExpectations(&observer_);
-}