Mercurial > hg > orthanc-stone

annotate UnitTestsSources/TestMessageBroker.cpp @ 622:8a3a25f2d42c

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uncoupling oracle from context
author Sebastien Jodogne <s.jodogne@gmail.com>
date Tue, 07 May 2019 12:32:21 +0200
parents 8adc8cfb50c7
children 573e35378999
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1 /**
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2 * Stone of Orthanc
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
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a750f11892ec merge default->am-vsol-upgrade
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5 * Copyright (C) 2017-2019 Osimis S.A., Belgium
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6 *
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7 * This program is free software: you can redistribute it and/or
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8 * modify it under the terms of the GNU Affero General Public License
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9 * as published by the Free Software Foundation, either version 3 of
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10 * the License, or (at your option) any later version.
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11 *
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12 * This program is distributed in the hope that it will be useful, but
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13 * WITHOUT ANY WARRANTY; without even the implied warranty of
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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15 * Affero General Public License for more details.
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16 *
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17 * You should have received a copy of the GNU Affero General Public License
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18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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19 **/
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20
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21
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22 #include "gtest/gtest.h"
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23
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24 #include "Framework/Messages/MessageBroker.h"
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25 #include "Framework/Messages/Promise.h"
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26 #include "Framework/Messages/IObservable.h"
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27 #include "Framework/Messages/IObserver.h"
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28 #include "Framework/Messages/MessageForwarder.h"
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29
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31 int testCounter = 0;
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32 namespace {
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33
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34 using namespace OrthancStone;
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35
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36
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37 enum CustomMessageType
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38 {
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39 CustomMessageType_First = MessageType_CustomMessage + 1,
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40
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41 CustomMessageType_Completed,
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42 CustomMessageType_Increment
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43 };
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44
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45
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46 class MyObservable : public IObservable
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47 {
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48 public:
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49 struct MyCustomMessage: public BaseMessage<(MessageType) CustomMessageType_Completed>
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50 {
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51 int payload_;
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52
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53 MyCustomMessage(int payload)
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54 : BaseMessage(),
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55 payload_(payload)
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56 {}
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57 };
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58
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59 MyObservable(MessageBroker& broker)
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60 : IObservable(broker)
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61 {}
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62
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63 };
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64
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65 class MyObserver : public IObserver
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66 {
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67 public:
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68 MyObserver(MessageBroker& broker)
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69 : IObserver(broker)
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70 {}
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71
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72 void HandleCompletedMessage(const MyObservable::MyCustomMessage& message)
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73 {
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74 testCounter += message.payload_;
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75 }
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76
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77 };
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78
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79
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80 class MyIntermediate : public IObserver, public IObservable
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81 {
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82 IObservable& observedObject_;
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83 public:
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84 MyIntermediate(MessageBroker& broker, IObservable& observedObject)
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85 : IObserver(broker),
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86 IObservable(broker),
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87 observedObject_(observedObject)
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88 {
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89 observedObject_.RegisterObserverCallback(new MessageForwarder<MyObservable::MyCustomMessage>(broker, *this));
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90 }
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91 };
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92
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93
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94 class MyPromiseSource : public IObservable
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95 {
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96 Promise* currentPromise_;
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97 public:
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98 struct MyPromiseMessage: public BaseMessage<MessageType_Test1>
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99 {
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100 int increment;
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101
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102 MyPromiseMessage(int increment)
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103 : BaseMessage(),
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104 increment(increment)
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105 {}
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106 };
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107
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108 MyPromiseSource(MessageBroker& broker)
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109 : IObservable(broker),
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110 currentPromise_(NULL)
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111 {}
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112
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113 Promise& StartSomethingAsync()
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114 {
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115 currentPromise_ = new Promise(GetBroker());
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116 return *currentPromise_;
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117 }
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118
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119 void CompleteSomethingAsyncWithSuccess(int payload)
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120 {
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121 currentPromise_->Success(MyPromiseMessage(payload));
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122 delete currentPromise_;
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123 }
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124
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125 void CompleteSomethingAsyncWithFailure(int payload)
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126 {
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127 currentPromise_->Failure(MyPromiseMessage(payload));
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128 delete currentPromise_;
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129 }
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130 };
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133 class MyPromiseTarget : public IObserver
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134 {
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135 public:
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136 MyPromiseTarget(MessageBroker& broker)
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137 : IObserver(broker)
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138 {}
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139
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140 void IncrementCounter(const MyPromiseSource::MyPromiseMessage& args)
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141 {
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142 testCounter += args.increment;
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143 }
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144
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145 void DecrementCounter(const MyPromiseSource::MyPromiseMessage& args)
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146 {
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147 testCounter -= args.increment;
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148 }
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149 };
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150 }
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152
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153 TEST(MessageBroker, TestPermanentConnectionSimpleUseCase)
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154 {
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155 MessageBroker broker;
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156 MyObservable observable(broker);
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157 MyObserver observer(broker);
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158
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159 // create a permanent connection between an observable and an observer
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160 observable.RegisterObserverCallback(new Callable<MyObserver, MyObservable::MyCustomMessage>(observer, &MyObserver::HandleCompletedMessage));
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161
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162 testCounter = 0;
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163 observable.EmitMessage(MyObservable::MyCustomMessage(12));
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164 ASSERT_EQ(12, testCounter);
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165
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166 // the connection is permanent; if we emit the same message again, the observer will be notified again
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167 testCounter = 0;
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168 observable.EmitMessage(MyObservable::MyCustomMessage(20));
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169 ASSERT_EQ(20, testCounter);
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170
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171 // Unregister the observer; make sure it's not called anymore
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172 observable.Unregister(&observer);
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173 testCounter = 0;
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174 observable.EmitMessage(MyObservable::MyCustomMessage(20));
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175 ASSERT_EQ(0, testCounter);
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176 }
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177
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178 TEST(MessageBroker, TestMessageForwarderSimpleUseCase)
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179 {
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180 MessageBroker broker;
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181 MyObservable observable(broker);
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182 MyIntermediate intermediate(broker, observable);
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183 MyObserver observer(broker);
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184
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185 // let the observer observers the intermediate that is actually forwarding the messages from the observable
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186 intermediate.RegisterObserverCallback(new Callable<MyObserver, MyObservable::MyCustomMessage>(observer, &MyObserver::HandleCompletedMessage));
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187
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188 testCounter = 0;
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189 observable.EmitMessage(MyObservable::MyCustomMessage(12));
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190 ASSERT_EQ(12, testCounter);
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191
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192 // the connection is permanent; if we emit the same message again, the observer will be notified again
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193 testCounter = 0;
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194 observable.EmitMessage(MyObservable::MyCustomMessage(20));
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195 ASSERT_EQ(20, testCounter);
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196 }
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197
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198 TEST(MessageBroker, TestPermanentConnectionDeleteObserver)
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199 {
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200 MessageBroker broker;
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201 MyObservable observable(broker);
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202 MyObserver* observer = new MyObserver(broker);
251
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203
428
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204 // create a permanent connection between an observable and an observer
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205 observable.RegisterObserverCallback(new Callable<MyObserver, MyObservable::MyCustomMessage>(*observer, &MyObserver::HandleCompletedMessage));
267
89d02de83c03 added declaretion of messages handled/emitted
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206
428
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207 testCounter = 0;
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208 observable.EmitMessage(MyObservable::MyCustomMessage(12));
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209 ASSERT_EQ(12, testCounter);
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210
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211 // delete the observer and check that the callback is not called anymore
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212 delete observer;
267
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213
428
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214 // the connection is permanent; if we emit the same message again, the observer will be notified again
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215 testCounter = 0;
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216 observable.EmitMessage(MyObservable::MyCustomMessage(20));
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217 ASSERT_EQ(0, testCounter);
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218 }
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219
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220 TEST(MessageBroker, TestMessageForwarderDeleteIntermediate)
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221 {
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222 MessageBroker broker;
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223 MyObservable observable(broker);
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224 MyIntermediate* intermediate = new MyIntermediate(broker, observable);
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225 MyObserver observer(broker);
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226
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227 // let the observer observers the intermediate that is actually forwarding the messages from the observable
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228 intermediate->RegisterObserverCallback(new Callable<MyObserver, MyObservable::MyCustomMessage>(observer, &MyObserver::HandleCompletedMessage));
267
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229
428
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230 testCounter = 0;
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231 observable.EmitMessage(MyObservable::MyCustomMessage(12));
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232 ASSERT_EQ(12, testCounter);
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233
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234 delete intermediate;
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235
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236 observable.EmitMessage(MyObservable::MyCustomMessage(20));
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237 ASSERT_EQ(12, testCounter);
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238 }
251
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239
428
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240 TEST(MessageBroker, TestCustomMessage)
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241 {
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242 MessageBroker broker;
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243 MyObservable observable(broker);
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244 MyIntermediate intermediate(broker, observable);
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245 MyObserver observer(broker);
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246
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247 // let the observer observers the intermediate that is actually forwarding the messages from the observable
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248 intermediate.RegisterObserverCallback(new Callable<MyObserver, MyObservable::MyCustomMessage>(observer, &MyObserver::HandleCompletedMessage));
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249
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250 testCounter = 0;
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251 observable.EmitMessage(MyObservable::MyCustomMessage(12));
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252 ASSERT_EQ(12, testCounter);
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253
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254 // the connection is permanent; if we emit the same message again, the observer will be notified again
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255 testCounter = 0;
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256 observable.EmitMessage(MyObservable::MyCustomMessage(20));
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257 ASSERT_EQ(20, testCounter);
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258 }
251
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259
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260
428
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261 TEST(MessageBroker, TestPromiseSuccessFailure)
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262 {
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263 MessageBroker broker;
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264 MyPromiseSource source(broker);
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265 MyPromiseTarget target(broker);
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266
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267 // test a successful promise
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268 source.StartSomethingAsync()
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269 .Then(new Callable<MyPromiseTarget, MyPromiseSource::MyPromiseMessage>(target, &MyPromiseTarget::IncrementCounter))
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270 .Else(new Callable<MyPromiseTarget, MyPromiseSource::MyPromiseMessage>(target, &MyPromiseTarget::DecrementCounter));
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271
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272 testCounter = 0;
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273 source.CompleteSomethingAsyncWithSuccess(10);
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274 ASSERT_EQ(10, testCounter);
251
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275
428
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276 // test a failing promise
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277 source.StartSomethingAsync()
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278 .Then(new Callable<MyPromiseTarget, MyPromiseSource::MyPromiseMessage>(target, &MyPromiseTarget::IncrementCounter))
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279 .Else(new Callable<MyPromiseTarget, MyPromiseSource::MyPromiseMessage>(target, &MyPromiseTarget::DecrementCounter));
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280
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281 testCounter = 0;
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282 source.CompleteSomethingAsyncWithFailure(15);
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283 ASSERT_EQ(-15, testCounter);
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284 }
251
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285
428
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286 TEST(MessageBroker, TestPromiseDeleteTarget)
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287 {
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288 MessageBroker broker;
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289 MyPromiseSource source(broker);
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290 MyPromiseTarget* target = new MyPromiseTarget(broker);
251
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291
428
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292 // create the promise
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293 source.StartSomethingAsync()
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294 .Then(new Callable<MyPromiseTarget, MyPromiseSource::MyPromiseMessage>(*target, &MyPromiseTarget::IncrementCounter))
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295 .Else(new Callable<MyPromiseTarget, MyPromiseSource::MyPromiseMessage>(*target, &MyPromiseTarget::DecrementCounter));
251
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296
428
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297 // delete the promise target
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298 delete target;
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299
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300 // trigger the promise, make sure it does not throw and does not call the callback
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301 testCounter = 0;
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302 source.CompleteSomethingAsyncWithSuccess(10);
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303 ASSERT_EQ(0, testCounter);
251
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304
428
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305 // test a failing promise
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306 source.StartSomethingAsync()
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307 .Then(new Callable<MyPromiseTarget, MyPromiseSource::MyPromiseMessage>(*target, &MyPromiseTarget::IncrementCounter))
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308 .Else(new Callable<MyPromiseTarget, MyPromiseSource::MyPromiseMessage>(*target, &MyPromiseTarget::DecrementCounter));
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309
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310 testCounter = 0;
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311 source.CompleteSomethingAsyncWithFailure(15);
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312 ASSERT_EQ(0, testCounter);
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313 }
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314
560
aaeec7be8fb7 add support for alpha channel in CairoSurface
Sebastien Jodogne <s.jodogne@gmail.com>
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315 #if 0 /* __cplusplus >= 201103L*/
251
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316
428
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317 TEST(MessageBroker, TestLambdaSimpleUseCase)
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318 {
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319 MessageBroker broker;
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320 MyObservable observable(broker);
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321 MyObserver* observer = new MyObserver(broker);
251
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322
428
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323 // create a permanent connection between an observable and an observer
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324 observable.RegisterObserverCallback(new LambdaCallable<MyObservable::MyCustomMessage>(*observer, [&](const MyObservable::MyCustomMessage& message) {testCounter += 2 * message.payload_;}));
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325
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326 testCounter = 0;
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327 observable.EmitMessage(MyObservable::MyCustomMessage(12));
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328 ASSERT_EQ(24, testCounter);
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329
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330 // delete the observer and check that the callback is not called anymore
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331 delete observer;
251
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332
428
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333 // the connection is permanent; if we emit the same message again, the observer will be notified again
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334 testCounter = 0;
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335 observable.EmitMessage(MyObservable::MyCustomMessage(20));
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336 ASSERT_EQ(0, testCounter);
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337 }
251
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338
428
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339 namespace {
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340 class MyObserverWithLambda : public IObserver {
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341 private:
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342 int multiplier_; // this is a private variable we want to access in a lambda
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343
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344 public:
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345 MyObserverWithLambda(MessageBroker& broker, int multiplier, MyObservable& observable)
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346 : IObserver(broker),
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347 multiplier_(multiplier)
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348 {
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349 // register a callable to a lambda that access private members
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350 observable.RegisterObserverCallback(new LambdaCallable<MyObservable::MyCustomMessage>(*this, [this](const MyObservable::MyCustomMessage& message) {
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351 testCounter += multiplier_ * message.payload_;
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352 }));
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353
428
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354 }
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355 };
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356 }
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357
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358 TEST(MessageBroker, TestLambdaCaptureThisAndAccessPrivateMembers)
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359 {
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360 MessageBroker broker;
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361 MyObservable observable(broker);
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362 MyObserverWithLambda* observer = new MyObserverWithLambda(broker, 3, observable);
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363
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364 testCounter = 0;
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365 observable.EmitMessage(MyObservable::MyCustomMessage(12));
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366 ASSERT_EQ(36, testCounter);
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367
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368 // delete the observer and check that the callback is not called anymore
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369 delete observer;
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370
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371 // the connection is permanent; if we emit the same message again, the observer will be notified again
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372 testCounter = 0;
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373 observable.EmitMessage(MyObservable::MyCustomMessage(20));
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374 ASSERT_EQ(0, testCounter);
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375 }
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376
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377 #endif // C++ 11