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comparison 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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1876:b1f510e601d2 1877:a2955abe4c2e
1 /**
2 * Stone of Orthanc
3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
4 * Department, University Hospital of Liege, Belgium
5 * Copyright (C) 2017-2022 Osimis S.A., Belgium
6 * Copyright (C) 2021-2022 Sebastien Jodogne, ICTEAM UCLouvain, Belgium
7 *
8 * This program is free software: you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public License
10 * as published by the Free Software Foundation, either version 3 of
11 * the License, or (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with this program. If not, see
20 * <http://www.gnu.org/licenses/>.
21 **/
22
23
24 #include <gtest/gtest.h>
25
26 #include "../Sources/Messages/IObservable.h"
27 #include "../Sources/Messages/ObserverBase.h"
28
29
30 int testCounter = 0;
31 namespace {
32
33 using namespace OrthancStone;
34
35
36 class MyObservable : public IObservable
37 {
38 public:
39 struct MyCustomMessage : public IMessage
40 {
41 ORTHANC_STONE_MESSAGE(__FILE__, __LINE__);
42
43 int payload_;
44
45 MyCustomMessage(int payload) :
46 payload_(payload)
47 {
48 }
49 };
50 };
51
52 class MyObserver : public ObserverBase<MyObserver>
53 {
54 public:
55 void HandleCompletedMessage(const MyObservable::MyCustomMessage& message)
56 {
57 testCounter += message.payload_;
58 }
59 };
60 }
61
62
63 TEST(MessageBroker, TestPermanentConnectionSimpleUseCase)
64 {
65 MyObservable observable;
66 boost::shared_ptr<MyObserver> observer(new MyObserver);
67
68 // create a permanent connection between an observable and an observer
69 observer->Register<MyObservable::MyCustomMessage>(observable, &MyObserver::HandleCompletedMessage);
70
71 testCounter = 0;
72 observable.BroadcastMessage(MyObservable::MyCustomMessage(12));
73 ASSERT_EQ(12, testCounter);
74
75 // the connection is permanent; if we emit the same message again, the observer will be notified again
76 testCounter = 0;
77 observable.BroadcastMessage(MyObservable::MyCustomMessage(20));
78 ASSERT_EQ(20, testCounter);
79
80 // Unregister the observer; make sure it's not called anymore
81 observer.reset();
82 testCounter = 0;
83 observable.BroadcastMessage(MyObservable::MyCustomMessage(20));
84 ASSERT_EQ(0, testCounter);
85 }
86
87 TEST(MessageBroker, TestPermanentConnectionDeleteObserver)
88 {
89 MyObservable observable;
90 boost::shared_ptr<MyObserver> observer(new MyObserver);
91
92 // create a permanent connection between an observable and an observer
93 observer->Register<MyObservable::MyCustomMessage>(observable, &MyObserver::HandleCompletedMessage);
94
95 testCounter = 0;
96 observable.BroadcastMessage(MyObservable::MyCustomMessage(12));
97 ASSERT_EQ(12, testCounter);
98
99 // delete the observer and check that the callback is not called anymore
100 observer.reset();
101
102 // the connection is permanent; if we emit the same message again, the observer will be notified again
103 testCounter = 0;
104 observable.BroadcastMessage(MyObservable::MyCustomMessage(20));
105 ASSERT_EQ(0, testCounter);
106 }