Aprog/test/net/sourceforge/aprog/events/ObservableTest.java

   1 /*
   2  *  The MIT License
   3  *
   4  *  Copyright 2010 Codist Monk.
   5  *
   6  *  Permission is hereby granted, free of charge, to any person obtaining a copy
   7  *  of this software and associated documentation files (the "Software"), to deal
   8  *  in the Software without restriction, including without limitation the rights
   9  *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  *  copies of the Software, and to permit persons to whom the Software is
  11  *  furnished to do so, subject to the following conditions:
  12  *
  13  *  The above copyright notice and this permission notice shall be included in
  14  *  all copies or substantial portions of the Software.
  15  *
  16  *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  19  *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  *  THE SOFTWARE.
  23  */
  24
  25 package net.sourceforge.aprog.events;
  26
  27 import static net.sourceforge.aprog.events.EventsTestingTools.*;
  28
  29 import static org.junit.Assert.*;
  30
  31 import net.sourceforge.aprog.events.Observable.Event;
  32
  33 import org.junit.Test;
  34
  35 /**
  36  * Automated tests using JUnit 4 for {@link Observable}.
  37  *
  38  * @author codistmonk (creation 2010-06-23)
  39  */
  40 public final class ObservableTest {
  41
  42     @Test
  43     public final <R extends EventRecorder<Event<?>> & DummyObservable.Listener> void testFireEvent() {
  44         final DummyObservable observable = new DummyObservable();
  45         @SuppressWarnings("unchecked")
  46         final R recorder1 = (R) newEventRecorder(DummyObservable.Listener.class);
  47         @SuppressWarnings("unchecked")
  48         final R recorder2 = (R) newEventRecorder(DummyObservable.Listener.class);
  49
  50         observable.addListener(recorder1);
  51         observable.addListener(recorder2);
  52         observable.fireNewEvent();
  53         observable.removeListener(recorder2);
  54         observable.fireNewEvent();
  55
  56         assertTrue(recorder1.getEvent(0) instanceof DummyObservable.EventFiredEvent);
  57         assertTrue(recorder1.getEvent(1) instanceof DummyObservable.EventFiredEvent);
  58         assertSame(recorder1.getEvent(0), recorder2.getEvent(0));
  59         assertEquals(2, recorder1.getEvents().size());
  60         assertEquals(1, recorder2.getEvents().size());
  61     }
  62
  63     /**
  64      *
  65      * @author codistmonk (creation 2010-06-23)
  66      */
  67     private static final class DummyObservable extends AbstractObservable<DummyObservable.Listener> {
  68
  69         /**
  70          * Package-private default constructor to suppress visibility warnings.
  71          */
  72         DummyObservable() {
  73             // Do nothing
  74         }
  75
  76         public final void fireNewEvent() {
  77             new EventFiredEvent().fire();
  78         }
  79
  80         /**
  81          *
  82          * @author codistmonk (creation 2010-06-23)
  83          */
  84         public static interface Listener {
  85
  86             /**
  87              *
  88              * @param event
  89              * <br>Not null
  90              */
  91             public abstract void eventFired(final EventFiredEvent event);
  92
  93         }
  94
  95         /**
  96          *
  97          * @author codistmonk (creation 2010-06-23)
  98          */
  99         public final class EventFiredEvent extends AbstractEvent<DummyObservable, Listener> {
 100
 101             @Override
 102             protected final void notifyListener(final Listener listener) {
 103                 listener.eventFired(this);
 104             }
 105
 106         }
 107
 108     }
 109
 110 }