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| 1 // Copyright (c) 2012 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/message_loop/message_loop.h" | |
| 6 #include "net/base/network_change_notifier.h" | |
| 7 #include "net/base/network_change_notifier_factory.h" | |
| 8 #include "net/base/network_change_notifier_win.h" | |
| 9 #include "testing/gmock/include/gmock/gmock.h" | |
| 10 #include "testing/gtest/include/gtest/gtest.h" | |
| 11 | |
| 12 using ::testing::AtLeast; | |
| 13 using ::testing::Invoke; | |
| 14 using ::testing::Return; | |
| 15 using ::testing::StrictMock; | |
| 16 | |
| 17 namespace net { | |
| 18 | |
| 19 namespace { | |
| 20 | |
| 21 // Subclass of NetworkChangeNotifierWin that overrides functions so that no | |
| 22 // Windows API networking functions are ever called. | |
| 23 class TestNetworkChangeNotifierWin : public NetworkChangeNotifierWin { | |
| 24 public: | |
| 25 TestNetworkChangeNotifierWin() {} | |
| 26 | |
| 27 virtual ~TestNetworkChangeNotifierWin() { | |
| 28 // This is needed so we don't try to stop watching for IP address changes, | |
| 29 // as we never actually started. | |
| 30 set_is_watching(false); | |
| 31 } | |
| 32 | |
| 33 // From NetworkChangeNotifierWin. | |
| 34 virtual NetworkChangeNotifier::ConnectionType | |
| 35 RecomputeCurrentConnectionType() const override { | |
| 36 return NetworkChangeNotifier::CONNECTION_UNKNOWN; | |
| 37 } | |
| 38 | |
| 39 // From NetworkChangeNotifierWin. | |
| 40 MOCK_METHOD0(WatchForAddressChangeInternal, bool()); | |
| 41 | |
| 42 private: | |
| 43 DISALLOW_COPY_AND_ASSIGN(TestNetworkChangeNotifierWin); | |
| 44 }; | |
| 45 | |
| 46 class TestIPAddressObserver | |
| 47 : public net::NetworkChangeNotifier::IPAddressObserver { | |
| 48 public: | |
| 49 TestIPAddressObserver() { | |
| 50 NetworkChangeNotifier::AddIPAddressObserver(this); | |
| 51 } | |
| 52 | |
| 53 ~TestIPAddressObserver() { | |
| 54 NetworkChangeNotifier::RemoveIPAddressObserver(this); | |
| 55 } | |
| 56 | |
| 57 MOCK_METHOD0(OnIPAddressChanged, void()); | |
| 58 | |
| 59 private: | |
| 60 DISALLOW_COPY_AND_ASSIGN(TestIPAddressObserver); | |
| 61 }; | |
| 62 | |
| 63 bool ExitMessageLoopAndReturnFalse() { | |
| 64 base::MessageLoop::current()->Quit(); | |
| 65 return false; | |
| 66 } | |
| 67 | |
| 68 } // namespace | |
| 69 | |
| 70 class NetworkChangeNotifierWinTest : public testing::Test { | |
| 71 public: | |
| 72 // Calls WatchForAddressChange, and simulates a WatchForAddressChangeInternal | |
| 73 // success. Expects that |network_change_notifier_| has just been created, so | |
| 74 // it's not watching anything yet, and there have been no previous | |
| 75 // WatchForAddressChangeInternal failures. | |
| 76 void StartWatchingAndSucceed() { | |
| 77 EXPECT_FALSE(network_change_notifier_.is_watching()); | |
| 78 EXPECT_EQ(0, network_change_notifier_.sequential_failures()); | |
| 79 | |
| 80 EXPECT_CALL(test_ip_address_observer_, OnIPAddressChanged()).Times(0); | |
| 81 EXPECT_CALL(network_change_notifier_, WatchForAddressChangeInternal()) | |
| 82 .Times(1) | |
| 83 .WillOnce(Return(true)); | |
| 84 | |
| 85 network_change_notifier_.WatchForAddressChange(); | |
| 86 | |
| 87 EXPECT_TRUE(network_change_notifier_.is_watching()); | |
| 88 EXPECT_EQ(0, network_change_notifier_.sequential_failures()); | |
| 89 | |
| 90 // If a task to notify observers of the IP address change event was | |
| 91 // incorrectly posted, make sure it gets run to trigger a failure. | |
| 92 base::MessageLoop::current()->RunUntilIdle(); | |
| 93 } | |
| 94 | |
| 95 // Calls WatchForAddressChange, and simulates a WatchForAddressChangeInternal | |
| 96 // failure. | |
| 97 void StartWatchingAndFail() { | |
| 98 EXPECT_FALSE(network_change_notifier_.is_watching()); | |
| 99 EXPECT_EQ(0, network_change_notifier_.sequential_failures()); | |
| 100 | |
| 101 EXPECT_CALL(test_ip_address_observer_, OnIPAddressChanged()).Times(0); | |
| 102 EXPECT_CALL(network_change_notifier_, WatchForAddressChangeInternal()) | |
| 103 // Due to an expected race, it's theoretically possible for more than | |
| 104 // one call to occur, though unlikely. | |
| 105 .Times(AtLeast(1)) | |
| 106 .WillRepeatedly(Return(false)); | |
| 107 | |
| 108 network_change_notifier_.WatchForAddressChange(); | |
| 109 | |
| 110 EXPECT_FALSE(network_change_notifier_.is_watching()); | |
| 111 EXPECT_LT(0, network_change_notifier_.sequential_failures()); | |
| 112 | |
| 113 // If a task to notify observers of the IP address change event was | |
| 114 // incorrectly posted, make sure it gets run. | |
| 115 base::MessageLoop::current()->RunUntilIdle(); | |
| 116 } | |
| 117 | |
| 118 // Simulates a network change event, resulting in a call to OnObjectSignaled. | |
| 119 // The resulting call to WatchForAddressChangeInternal then succeeds. | |
| 120 void SignalAndSucceed() { | |
| 121 EXPECT_TRUE(network_change_notifier_.is_watching()); | |
| 122 EXPECT_EQ(0, network_change_notifier_.sequential_failures()); | |
| 123 | |
| 124 EXPECT_CALL(test_ip_address_observer_, OnIPAddressChanged()).Times(1); | |
| 125 EXPECT_CALL(network_change_notifier_, WatchForAddressChangeInternal()) | |
| 126 .Times(1) | |
| 127 .WillOnce(Return(true)); | |
| 128 | |
| 129 network_change_notifier_.OnObjectSignaled(INVALID_HANDLE_VALUE); | |
| 130 | |
| 131 EXPECT_TRUE(network_change_notifier_.is_watching()); | |
| 132 EXPECT_EQ(0, network_change_notifier_.sequential_failures()); | |
| 133 | |
| 134 // Run the task to notify observers of the IP address change event. | |
| 135 base::MessageLoop::current()->RunUntilIdle(); | |
| 136 } | |
| 137 | |
| 138 // Simulates a network change event, resulting in a call to OnObjectSignaled. | |
| 139 // The resulting call to WatchForAddressChangeInternal then fails. | |
| 140 void SignalAndFail() { | |
| 141 EXPECT_TRUE(network_change_notifier_.is_watching()); | |
| 142 EXPECT_EQ(0, network_change_notifier_.sequential_failures()); | |
| 143 | |
| 144 EXPECT_CALL(test_ip_address_observer_, OnIPAddressChanged()).Times(1); | |
| 145 EXPECT_CALL(network_change_notifier_, WatchForAddressChangeInternal()) | |
| 146 // Due to an expected race, it's theoretically possible for more than | |
| 147 // one call to occur, though unlikely. | |
| 148 .Times(AtLeast(1)) | |
| 149 .WillRepeatedly(Return(false)); | |
| 150 | |
| 151 network_change_notifier_.OnObjectSignaled(INVALID_HANDLE_VALUE); | |
| 152 | |
| 153 EXPECT_FALSE(network_change_notifier_.is_watching()); | |
| 154 EXPECT_LT(0, network_change_notifier_.sequential_failures()); | |
| 155 | |
| 156 // Run the task to notify observers of the IP address change event. | |
| 157 base::MessageLoop::current()->RunUntilIdle(); | |
| 158 } | |
| 159 | |
| 160 // Runs the message loop until WatchForAddressChange is called again, as a | |
| 161 // result of the already posted task after a WatchForAddressChangeInternal | |
| 162 // failure. Simulates a success on the resulting call to | |
| 163 // WatchForAddressChangeInternal. | |
| 164 void RetryAndSucceed() { | |
| 165 EXPECT_FALSE(network_change_notifier_.is_watching()); | |
| 166 EXPECT_LT(0, network_change_notifier_.sequential_failures()); | |
| 167 | |
| 168 EXPECT_CALL(test_ip_address_observer_, OnIPAddressChanged()).Times(1) | |
| 169 .WillOnce( | |
| 170 Invoke(base::MessageLoop::current(), &base::MessageLoop::Quit)); | |
| 171 EXPECT_CALL(network_change_notifier_, WatchForAddressChangeInternal()) | |
| 172 .Times(1).WillOnce(Return(true)); | |
| 173 | |
| 174 base::MessageLoop::current()->Run(); | |
| 175 | |
| 176 EXPECT_TRUE(network_change_notifier_.is_watching()); | |
| 177 EXPECT_EQ(0, network_change_notifier_.sequential_failures()); | |
| 178 } | |
| 179 | |
| 180 // Runs the message loop until WatchForAddressChange is called again, as a | |
| 181 // result of the already posted task after a WatchForAddressChangeInternal | |
| 182 // failure. Simulates a failure on the resulting call to | |
| 183 // WatchForAddressChangeInternal. | |
| 184 void RetryAndFail() { | |
| 185 EXPECT_FALSE(network_change_notifier_.is_watching()); | |
| 186 EXPECT_LT(0, network_change_notifier_.sequential_failures()); | |
| 187 | |
| 188 int initial_sequential_failures = | |
| 189 network_change_notifier_.sequential_failures(); | |
| 190 | |
| 191 EXPECT_CALL(test_ip_address_observer_, OnIPAddressChanged()).Times(0); | |
| 192 EXPECT_CALL(network_change_notifier_, WatchForAddressChangeInternal()) | |
| 193 // Due to an expected race, it's theoretically possible for more than | |
| 194 // one call to occur, though unlikely. | |
| 195 .Times(AtLeast(1)) | |
| 196 .WillRepeatedly(Invoke(ExitMessageLoopAndReturnFalse)); | |
| 197 | |
| 198 base::MessageLoop::current()->Run(); | |
| 199 | |
| 200 EXPECT_FALSE(network_change_notifier_.is_watching()); | |
| 201 EXPECT_LT(initial_sequential_failures, | |
| 202 network_change_notifier_.sequential_failures()); | |
| 203 | |
| 204 // If a task to notify observers of the IP address change event was | |
| 205 // incorrectly posted, make sure it gets run. | |
| 206 base::MessageLoop::current()->RunUntilIdle(); | |
| 207 } | |
| 208 | |
| 209 private: | |
| 210 // Note that the order of declaration here is important. | |
| 211 | |
| 212 // Allows creating a new NetworkChangeNotifier. Must be created before | |
| 213 // |network_change_notifier_| and destroyed after it to avoid DCHECK failures. | |
| 214 NetworkChangeNotifier::DisableForTest disable_for_test_; | |
| 215 | |
| 216 StrictMock<TestNetworkChangeNotifierWin> network_change_notifier_; | |
| 217 | |
| 218 // Must be created after |network_change_notifier_|, so it can add itself as | |
| 219 // an IPAddressObserver. | |
| 220 StrictMock<TestIPAddressObserver> test_ip_address_observer_; | |
| 221 }; | |
| 222 | |
| 223 TEST_F(NetworkChangeNotifierWinTest, NetChangeWinBasic) { | |
| 224 StartWatchingAndSucceed(); | |
| 225 } | |
| 226 | |
| 227 TEST_F(NetworkChangeNotifierWinTest, NetChangeWinFailStart) { | |
| 228 StartWatchingAndFail(); | |
| 229 } | |
| 230 | |
| 231 TEST_F(NetworkChangeNotifierWinTest, NetChangeWinFailStartOnce) { | |
| 232 StartWatchingAndFail(); | |
| 233 RetryAndSucceed(); | |
| 234 } | |
| 235 | |
| 236 TEST_F(NetworkChangeNotifierWinTest, NetChangeWinFailStartTwice) { | |
| 237 StartWatchingAndFail(); | |
| 238 RetryAndFail(); | |
| 239 RetryAndSucceed(); | |
| 240 } | |
| 241 | |
| 242 TEST_F(NetworkChangeNotifierWinTest, NetChangeWinSignal) { | |
| 243 StartWatchingAndSucceed(); | |
| 244 SignalAndSucceed(); | |
| 245 } | |
| 246 | |
| 247 TEST_F(NetworkChangeNotifierWinTest, NetChangeWinFailSignalOnce) { | |
| 248 StartWatchingAndSucceed(); | |
| 249 SignalAndFail(); | |
| 250 RetryAndSucceed(); | |
| 251 } | |
| 252 | |
| 253 TEST_F(NetworkChangeNotifierWinTest, NetChangeWinFailSignalTwice) { | |
| 254 StartWatchingAndSucceed(); | |
| 255 SignalAndFail(); | |
| 256 RetryAndFail(); | |
| 257 RetryAndSucceed(); | |
| 258 } | |
| 259 | |
| 260 } // namespace net | |
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