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Side by Side Diff: base/prefs/scoped_user_pref_update_unittest.cc

Issue 1645073005: Revert of Move base/prefs to components/prefs (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 4 years, 10 months ago
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1 // Copyright 2013 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "base/prefs/mock_pref_change_callback.h"
6 #include "base/prefs/pref_change_registrar.h"
7 #include "base/prefs/pref_registry_simple.h"
8 #include "base/prefs/scoped_user_pref_update.h"
9 #include "base/prefs/testing_pref_service.h"
10 #include "testing/gmock/include/gmock/gmock.h"
11 #include "testing/gtest/include/gtest/gtest.h"
12
13 using testing::_;
14 using testing::Mock;
15
16 class ScopedUserPrefUpdateTest : public testing::Test {
17 public:
18 ScopedUserPrefUpdateTest() : observer_(&prefs_) {}
19 ~ScopedUserPrefUpdateTest() override {}
20
21 protected:
22 void SetUp() override {
23 prefs_.registry()->RegisterDictionaryPref(kPref);
24 registrar_.Init(&prefs_);
25 registrar_.Add(kPref, observer_.GetCallback());
26 }
27
28 static const char kPref[];
29 static const char kKey[];
30 static const char kValue[];
31
32 TestingPrefServiceSimple prefs_;
33 MockPrefChangeCallback observer_;
34 PrefChangeRegistrar registrar_;
35 };
36
37 const char ScopedUserPrefUpdateTest::kPref[] = "name";
38 const char ScopedUserPrefUpdateTest::kKey[] = "key";
39 const char ScopedUserPrefUpdateTest::kValue[] = "value";
40
41 TEST_F(ScopedUserPrefUpdateTest, RegularUse) {
42 // Dictionary that will be expected to be set at the end.
43 base::DictionaryValue expected_dictionary;
44 expected_dictionary.SetString(kKey, kValue);
45
46 {
47 EXPECT_CALL(observer_, OnPreferenceChanged(_)).Times(0);
48 DictionaryPrefUpdate update(&prefs_, kPref);
49 base::DictionaryValue* value = update.Get();
50 ASSERT_TRUE(value);
51 value->SetString(kKey, kValue);
52
53 // The dictionary was created for us but the creation should have happened
54 // silently without notifications.
55 Mock::VerifyAndClearExpectations(&observer_);
56
57 // Modifications happen online and are instantly visible, though.
58 const base::DictionaryValue* current_value = prefs_.GetDictionary(kPref);
59 ASSERT_TRUE(current_value);
60 EXPECT_TRUE(expected_dictionary.Equals(current_value));
61
62 // Now we are leaving the scope of the update so we should be notified.
63 observer_.Expect(kPref, &expected_dictionary);
64 }
65 Mock::VerifyAndClearExpectations(&observer_);
66
67 const base::DictionaryValue* current_value = prefs_.GetDictionary(kPref);
68 ASSERT_TRUE(current_value);
69 EXPECT_TRUE(expected_dictionary.Equals(current_value));
70 }
71
72 TEST_F(ScopedUserPrefUpdateTest, NeverTouchAnything) {
73 const base::DictionaryValue* old_value = prefs_.GetDictionary(kPref);
74 EXPECT_CALL(observer_, OnPreferenceChanged(_)).Times(0);
75 {
76 DictionaryPrefUpdate update(&prefs_, kPref);
77 }
78 const base::DictionaryValue* new_value = prefs_.GetDictionary(kPref);
79 EXPECT_EQ(old_value, new_value);
80 Mock::VerifyAndClearExpectations(&observer_);
81 }
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