Mercurial > hg > orthanc-stone

annotate OrthancStone/UnitTestsSources/TestMessageBroker.cpp @ 1877:a2955abe4c2e

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skeleton for the RenderingPlugin
author Sebastien Jodogne <s.jodogne@gmail.com>
date Wed, 12 Jan 2022 08:23:38 +0100
parents UnitTestsSources/TestMessageBroker.cpp@7053b8a0aaec
children 07964689cb0b
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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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5 * Copyright (C) 2017-2022 Osimis S.A., Belgium
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6 * Copyright (C) 2021-2022 Sebastien Jodogne, ICTEAM UCLouvain, Belgium
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7 *
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8 * This program is free software: you can redistribute it and/or
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9 * modify it under the terms of the GNU Lesser General Public License
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10 * as published by the Free Software Foundation, either version 3 of
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11 * the License, or (at your option) any later version.
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12 *
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13 * This program is distributed in the hope that it will be useful, but
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14 * WITHOUT ANY WARRANTY; without even the implied warranty of
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15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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16 * Lesser General Public License for more details.
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17 *
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18 * You should have received a copy of the GNU Lesser General Public
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19 * License along with this program. If not, see
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20 * <http://www.gnu.org/licenses/>.
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21 **/
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22
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23
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24 #include <gtest/gtest.h>
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25
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26 #include "../Sources/Messages/IObservable.h"
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27 #include "../Sources/Messages/ObserverBase.h"
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29
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30 int testCounter = 0;
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31 namespace {
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32
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33 using namespace OrthancStone;
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34
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35
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36 class MyObservable : public IObservable
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37 {
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38 public:
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39 struct MyCustomMessage : public IMessage
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40 {
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41 ORTHANC_STONE_MESSAGE(__FILE__, __LINE__);
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42
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43 int payload_;
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44
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45 MyCustomMessage(int payload) :
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46 payload_(payload)
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47 {
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48 }
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49 };
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50 };
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51
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52 class MyObserver : public ObserverBase<MyObserver>
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53 {
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54 public:
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55 void HandleCompletedMessage(const MyObservable::MyCustomMessage& message)
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56 {
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57 testCounter += message.payload_;
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58 }
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59 };
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60 }
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62
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63 TEST(MessageBroker, TestPermanentConnectionSimpleUseCase)
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64 {
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65 MyObservable observable;
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66 boost::shared_ptr<MyObserver> observer(new MyObserver);
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67
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68 // create a permanent connection between an observable and an observer
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69 observer->Register<MyObservable::MyCustomMessage>(observable, &MyObserver::HandleCompletedMessage);
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70
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71 testCounter = 0;
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72 observable.BroadcastMessage(MyObservable::MyCustomMessage(12));
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73 ASSERT_EQ(12, testCounter);
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74
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75 // the connection is permanent; if we emit the same message again, the observer will be notified again
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76 testCounter = 0;
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77 observable.BroadcastMessage(MyObservable::MyCustomMessage(20));
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78 ASSERT_EQ(20, testCounter);
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79
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80 // Unregister the observer; make sure it's not called anymore
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81 observer.reset();
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82 testCounter = 0;
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83 observable.BroadcastMessage(MyObservable::MyCustomMessage(20));
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84 ASSERT_EQ(0, testCounter);
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85 }
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86
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87 TEST(MessageBroker, TestPermanentConnectionDeleteObserver)
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88 {
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89 MyObservable observable;
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90 boost::shared_ptr<MyObserver> observer(new MyObserver);
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91
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92 // create a permanent connection between an observable and an observer
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93 observer->Register<MyObservable::MyCustomMessage>(observable, &MyObserver::HandleCompletedMessage);
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94
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95 testCounter = 0;
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96 observable.BroadcastMessage(MyObservable::MyCustomMessage(12));
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97 ASSERT_EQ(12, testCounter);
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98
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99 // delete the observer and check that the callback is not called anymore
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100 observer.reset();
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101
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102 // the connection is permanent; if we emit the same message again, the observer will be notified again
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103 testCounter = 0;
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104 observable.BroadcastMessage(MyObservable::MyCustomMessage(20));
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105 ASSERT_EQ(0, testCounter);
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106 }