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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #import "base/ios/crb_protocol_observers.h" | 5 #import "base/ios/crb_protocol_observers.h" |
6 #include "base/ios/weak_nsobject.h" | 6 #include "base/ios/weak_nsobject.h" |
7 #include "base/mac/scoped_nsautorelease_pool.h" | 7 #include "base/mac/scoped_nsautorelease_pool.h" |
8 #include "base/mac/scoped_nsobject.h" | 8 #include "base/mac/scoped_nsobject.h" |
9 #include "testing/gtest/include/gtest/gtest.h" | 9 #include "testing/gtest/include/gtest/gtest.h" |
10 #include "testing/gtest_mac.h" | 10 #include "testing/gtest_mac.h" |
11 #include "testing/platform_test.h" | 11 #include "testing/platform_test.h" |
12 | 12 |
13 @protocol TestObserver | 13 @protocol TestObserver |
14 | 14 |
15 @required | 15 @required |
16 - (void)requiredMethod; | 16 - (void)requiredMethod; |
17 - (void)reset; | 17 - (void)reset; |
18 | 18 |
19 @optional | 19 @optional |
20 - (void)optionalMethod; | 20 - (void)optionalMethod; |
21 - (void)mutateByAddingObserver:(id<TestObserver>)observer; | |
22 - (void)mutateByRemovingObserver:(id<TestObserver>)observer; | |
21 | 23 |
22 @end | 24 @end |
23 | 25 |
24 // Implements only the required methods in the TestObserver protocol. | 26 // Implements only the required methods in the TestObserver protocol. |
25 @interface TestPartialObserver : NSObject<TestObserver> | 27 @interface TestPartialObserver : NSObject<TestObserver> |
26 @property(nonatomic, readonly) BOOL requiredMethodInvoked; | 28 @property(nonatomic, readonly) BOOL requiredMethodInvoked; |
27 @end | 29 @end |
28 | 30 |
29 // Implements all the methods in the TestObserver protocol. | 31 // Implements all the methods in the TestObserver protocol. |
30 @interface TestCompleteObserver : TestPartialObserver<TestObserver> | 32 @interface TestCompleteObserver : TestPartialObserver<TestObserver> |
31 @property(nonatomic, readonly) BOOL optionalMethodInvoked; | 33 @property(nonatomic, readonly) BOOL optionalMethodInvoked; |
32 @end | 34 @end |
33 | 35 |
36 @interface TestMutateObserver : TestCompleteObserver | |
37 | |
38 - (instancetype)initWithObserver:(CRBProtocolObservers*)observer | |
39 NS_DESIGNATED_INITIALIZER; | |
40 | |
41 @end | |
42 | |
34 namespace { | 43 namespace { |
35 | 44 |
36 class CRBProtocolObserversTest : public PlatformTest { | 45 class CRBProtocolObserversTest : public PlatformTest { |
37 public: | 46 public: |
38 CRBProtocolObserversTest() {} | 47 CRBProtocolObserversTest() {} |
39 | 48 |
40 protected: | 49 protected: |
41 void SetUp() override { | 50 void SetUp() override { |
42 PlatformTest::SetUp(); | 51 PlatformTest::SetUp(); |
43 | 52 |
44 observers_.reset([[CRBProtocolObservers observersWithProtocol: | 53 observers_.reset([[CRBProtocolObservers observersWithProtocol: |
45 @protocol(TestObserver)] retain]); | 54 @protocol(TestObserver)] retain]); |
46 | 55 |
47 partial_observer_.reset([[TestPartialObserver alloc] init]); | 56 partial_observer_.reset([[TestPartialObserver alloc] init]); |
48 EXPECT_FALSE([partial_observer_ requiredMethodInvoked]); | 57 EXPECT_FALSE([partial_observer_ requiredMethodInvoked]); |
49 | 58 |
50 complete_observer_.reset([[TestCompleteObserver alloc] init]); | 59 complete_observer_.reset([[TestCompleteObserver alloc] init]); |
51 EXPECT_FALSE([complete_observer_ requiredMethodInvoked]); | 60 EXPECT_FALSE([complete_observer_ requiredMethodInvoked]); |
52 EXPECT_FALSE([complete_observer_ optionalMethodInvoked]); | 61 EXPECT_FALSE([complete_observer_ optionalMethodInvoked]); |
62 | |
63 mutate_observer_.reset( | |
64 [[TestMutateObserver alloc] initWithObserver:observers_.get()]); | |
65 EXPECT_FALSE([mutate_observer_ requiredMethodInvoked]); | |
53 } | 66 } |
54 | 67 |
55 base::scoped_nsobject<id> observers_; | 68 base::scoped_nsobject<id> observers_; |
56 base::scoped_nsobject<TestPartialObserver> partial_observer_; | 69 base::scoped_nsobject<TestPartialObserver> partial_observer_; |
57 base::scoped_nsobject<TestCompleteObserver> complete_observer_; | 70 base::scoped_nsobject<TestCompleteObserver> complete_observer_; |
71 base::scoped_nsobject<TestMutateObserver> mutate_observer_; | |
58 }; | 72 }; |
59 | 73 |
60 // Verifies basic functionality of -[CRBProtocolObservers addObserver:] and | 74 // Verifies basic functionality of -[CRBProtocolObservers addObserver:] and |
61 // -[CRBProtocolObservers removeObserver:]. | 75 // -[CRBProtocolObservers removeObserver:]. |
62 TEST_F(CRBProtocolObserversTest, AddRemoveObserver) { | 76 TEST_F(CRBProtocolObserversTest, AddRemoveObserver) { |
63 // Add an observer and verify that the CRBProtocolObservers instance forwards | 77 // Add an observer and verify that the CRBProtocolObservers instance forwards |
64 // an invocation to it. | 78 // an invocation to it. |
65 [observers_ addObserver:partial_observer_]; | 79 [observers_ addObserver:partial_observer_]; |
66 [observers_ requiredMethod]; | 80 [observers_ requiredMethod]; |
67 EXPECT_TRUE([partial_observer_ requiredMethodInvoked]); | 81 EXPECT_TRUE([partial_observer_ requiredMethodInvoked]); |
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112 // autoreleased array that holds all the observers. | 126 // autoreleased array that holds all the observers. |
113 base::mac::ScopedNSAutoreleasePool pool; | 127 base::mac::ScopedNSAutoreleasePool pool; |
114 [observers_ requiredMethod]; | 128 [observers_ requiredMethod]; |
115 EXPECT_TRUE([partial_observer_ requiredMethodInvoked]); | 129 EXPECT_TRUE([partial_observer_ requiredMethodInvoked]); |
116 } | 130 } |
117 | 131 |
118 partial_observer_.reset(); | 132 partial_observer_.reset(); |
119 EXPECT_FALSE(weak_observer.get()); | 133 EXPECT_FALSE(weak_observer.get()); |
120 } | 134 } |
121 | 135 |
136 // Verifies that - [CRBProtocolObservers addObserver:] and | |
137 // - [CRBProtocolObservers removeObserver:] can be called while methods are | |
138 // being forwarded. | |
139 TEST_F(CRBProtocolObserversTest, MutateObservers) { | |
140 // Indirectly add an observer while forwarding an observer method. | |
141 [observers_ addObserver:mutate_observer_]; | |
142 | |
143 [observers_ mutateByAddingObserver:partial_observer_]; | |
144 EXPECT_FALSE([partial_observer_ requiredMethodInvoked]); | |
145 | |
146 // Check that methods are correctly forwared to the indirectly added observer. | |
147 [mutate_observer_ reset]; | |
148 [observers_ requiredMethod]; | |
149 EXPECT_TRUE([mutate_observer_ requiredMethodInvoked]); | |
150 EXPECT_TRUE([partial_observer_ requiredMethodInvoked]); | |
151 | |
152 [mutate_observer_ reset]; | |
153 [partial_observer_ reset]; | |
154 | |
155 // Indirectly remove an observer while forwarding an observer method. | |
156 [observers_ mutateByRemovingObserver:partial_observer_]; | |
157 | |
158 // Check that method is not forwared to the indirectly removed observer. | |
159 [observers_ requiredMethod]; | |
160 EXPECT_TRUE([mutate_observer_ requiredMethodInvoked]); | |
161 EXPECT_FALSE([partial_observer_ requiredMethodInvoked]); | |
162 } | |
163 | |
droger
2015/06/04 10:04:23
We should also probably test the case where _invoc
jbbegue
2015/06/04 12:13:03
I added a test for the nested case.
I also added a
| |
122 } // namespace | 164 } // namespace |
123 | 165 |
124 @implementation TestPartialObserver { | 166 @implementation TestPartialObserver { |
125 BOOL _requiredMethodInvoked; | 167 BOOL _requiredMethodInvoked; |
126 } | 168 } |
127 | 169 |
128 - (BOOL)requiredMethodInvoked { | 170 - (BOOL)requiredMethodInvoked { |
129 return _requiredMethodInvoked; | 171 return _requiredMethodInvoked; |
130 } | 172 } |
131 | 173 |
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150 - (void)optionalMethod { | 192 - (void)optionalMethod { |
151 _optionalMethodInvoked = YES; | 193 _optionalMethodInvoked = YES; |
152 } | 194 } |
153 | 195 |
154 - (void)reset { | 196 - (void)reset { |
155 [super reset]; | 197 [super reset]; |
156 _optionalMethodInvoked = NO; | 198 _optionalMethodInvoked = NO; |
157 } | 199 } |
158 | 200 |
159 @end | 201 @end |
202 | |
203 @implementation TestMutateObserver { | |
204 __weak CRBProtocolObservers* _observers; | |
205 } | |
206 | |
207 - (instancetype)initWithObserver:(CRBProtocolObservers*)observers { | |
208 self = [super init]; | |
209 if (self) { | |
210 _observers = observers; | |
211 } | |
212 return self; | |
213 } | |
214 | |
215 - (void)mutateByAddingObserver:(id<TestObserver>)observer { | |
216 [_observers addObserver:observer]; | |
217 } | |
218 | |
219 - (void)mutateByRemovingObserver:(id<TestObserver>)observer { | |
220 [_observers removeObserver:observer]; | |
221 } | |
222 | |
223 @end | |
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