Move base/prefs to components/prefs

base/prefs/scoped_user_pref_update_unittest.cc

-// Copyright 2013 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/prefs/mock_pref_change_callback.h"
-#include "base/prefs/pref_change_registrar.h"
-#include "base/prefs/pref_registry_simple.h"
-#include "base/prefs/scoped_user_pref_update.h"
-#include "base/prefs/testing_pref_service.h"
-#include "testing/gmock/include/gmock/gmock.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-using testing::_;
-using testing::Mock;
-
-class ScopedUserPrefUpdateTest : public testing::Test {
- public:
-  ScopedUserPrefUpdateTest() : observer_(&prefs_) {}
-  ~ScopedUserPrefUpdateTest() override {}
-
- protected:
-  void SetUp() override {
-    prefs_.registry()->RegisterDictionaryPref(kPref);
-    registrar_.Init(&prefs_);
-    registrar_.Add(kPref, observer_.GetCallback());
-  }
-
-  static const char kPref[];
-  static const char kKey[];
-  static const char kValue[];
-
-  TestingPrefServiceSimple prefs_;
-  MockPrefChangeCallback observer_;
-  PrefChangeRegistrar registrar_;
-};
-
-const char ScopedUserPrefUpdateTest::kPref[] = "name";
-const char ScopedUserPrefUpdateTest::kKey[] = "key";
-const char ScopedUserPrefUpdateTest::kValue[] = "value";
-
-TEST_F(ScopedUserPrefUpdateTest, RegularUse) {
-  // Dictionary that will be expected to be set at the end.
-  base::DictionaryValue expected_dictionary;
-  expected_dictionary.SetString(kKey, kValue);
-
-  {
-    EXPECT_CALL(observer_, OnPreferenceChanged(_)).Times(0);
-    DictionaryPrefUpdate update(&prefs_, kPref);
-    base::DictionaryValue* value = update.Get();
-    ASSERT_TRUE(value);
-    value->SetString(kKey, kValue);
-
-    // The dictionary was created for us but the creation should have happened
-    // silently without notifications.
-    Mock::VerifyAndClearExpectations(&observer_);
-
-    // Modifications happen online and are instantly visible, though.
-    const base::DictionaryValue* current_value = prefs_.GetDictionary(kPref);
-    ASSERT_TRUE(current_value);
-    EXPECT_TRUE(expected_dictionary.Equals(current_value));
-
-    // Now we are leaving the scope of the update so we should be notified.
-    observer_.Expect(kPref, &expected_dictionary);
-  }
-  Mock::VerifyAndClearExpectations(&observer_);
-
-  const base::DictionaryValue* current_value = prefs_.GetDictionary(kPref);
-  ASSERT_TRUE(current_value);
-  EXPECT_TRUE(expected_dictionary.Equals(current_value));
-}
-
-TEST_F(ScopedUserPrefUpdateTest, NeverTouchAnything) {
-  const base::DictionaryValue* old_value = prefs_.GetDictionary(kPref);
-  EXPECT_CALL(observer_, OnPreferenceChanged(_)).Times(0);
-  {
-    DictionaryPrefUpdate update(&prefs_, kPref);
-  }
-  const base::DictionaryValue* new_value = prefs_.GetDictionary(kPref);
-  EXPECT_EQ(old_value, new_value);
-  Mock::VerifyAndClearExpectations(&observer_);
-}