annotate UnitTestsSources/TestMessageBroker.cpp @ 1875:b896f20d24ca

added UnionOfRectangles algorithm
author Sebastien Jodogne <s.jodogne@gmail.com>
date Tue, 11 Jan 2022 19:59:40 +0100
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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 Affero 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 * Affero 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 Affero General Public License
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19 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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20 **/
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21
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22
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23 #include <gtest/gtest.h>
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24
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25 #include "../OrthancStone/Sources/Messages/IObservable.h"
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26 #include "../OrthancStone/Sources/Messages/ObserverBase.h"
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29 int testCounter = 0;
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30 namespace {
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31
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32 using namespace OrthancStone;
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33
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34
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35 class MyObservable : public IObservable
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36 {
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37 public:
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38 struct MyCustomMessage : public IMessage
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39 {
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40 ORTHANC_STONE_MESSAGE(__FILE__, __LINE__);
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41
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42 int payload_;
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43
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44 MyCustomMessage(int payload) :
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45 payload_(payload)
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46 {
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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 class MyObserver : public ObserverBase<MyObserver>
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52 {
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53 public:
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54 void HandleCompletedMessage(const MyObservable::MyCustomMessage& message)
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55 {
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56 testCounter += message.payload_;
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57 }
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58 };
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59 }
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61
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62 TEST(MessageBroker, TestPermanentConnectionSimpleUseCase)
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63 {
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64 MyObservable observable;
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65 boost::shared_ptr<MyObserver> observer(new MyObserver);
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66
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67 // create a permanent connection between an observable and an observer
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68 observer->Register<MyObservable::MyCustomMessage>(observable, &MyObserver::HandleCompletedMessage);
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69
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70 testCounter = 0;
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71 observable.BroadcastMessage(MyObservable::MyCustomMessage(12));
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72 ASSERT_EQ(12, testCounter);
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73
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74 // the connection is permanent; if we emit the same message again, the observer will be notified again
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75 testCounter = 0;
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76 observable.BroadcastMessage(MyObservable::MyCustomMessage(20));
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77 ASSERT_EQ(20, testCounter);
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78
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79 // Unregister the observer; make sure it's not called anymore
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80 observer.reset();
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81 testCounter = 0;
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82 observable.BroadcastMessage(MyObservable::MyCustomMessage(20));
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83 ASSERT_EQ(0, testCounter);
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84 }
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85
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86 TEST(MessageBroker, TestPermanentConnectionDeleteObserver)
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87 {
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88 MyObservable observable;
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89 boost::shared_ptr<MyObserver> observer(new MyObserver);
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90
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91 // create a permanent connection between an observable and an observer
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92 observer->Register<MyObservable::MyCustomMessage>(observable, &MyObserver::HandleCompletedMessage);
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93
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94 testCounter = 0;
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95 observable.BroadcastMessage(MyObservable::MyCustomMessage(12));
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96 ASSERT_EQ(12, testCounter);
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97
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98 // delete the observer and check that the callback is not called anymore
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99 observer.reset();
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100
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101 // the connection is permanent; if we emit the same message again, the observer will be notified again
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102 testCounter = 0;
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103 observable.BroadcastMessage(MyObservable::MyCustomMessage(20));
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104 ASSERT_EQ(0, testCounter);
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105 }