Aprog/test/net/sourceforge/aprog/events/AtomicVariableTest.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 import net.sourceforge.aprog.events.Variable.Listener;
  33
  34 import org.junit.Test;
  35
  36 /**
  37  * Automated tests using JUnit 4 for {@link AtomicVariable}.
  38  *
  39  * @author codistmonk (creation 2010-06-23)
  40  */
  41 public final class AtomicVariableTest {
  42
  43     @Test
  44     public final <R extends EventRecorder<Event<?>> & Listener<Integer>> void testEvents() {
  45         final AtomicVariable<Integer> x = new AtomicVariable<Integer>(Integer.class, "x", 42);
  46         @SuppressWarnings("unchecked")
  47         final R recorder = (R) newEventRecorder(Listener.class);
  48
  49         x.addListener(recorder);
  50
  51         assertEquals(42, (Object) x.getValue());
  52
  53         x.setValue(33);
  54
  55         assertEquals(33, (Object) x.getValue());
  56         assertEquals(1, recorder.getEvents().size());
  57
  58         {
  59             final AtomicVariable<Integer>.ValueChangedEvent event = recorder.getEvent(0);
  60
  61             assertSame(x, event.getSource());
  62             assertEquals(42, (Object) event.getOldValue());
  63             assertEquals(33, (Object) event.getNewValue());
  64         }
  65
  66         x.setValue(x.getValue());
  67
  68         assertEquals(1, recorder.getEvents().size());
  69
  70         x.setValue(42);
  71
  72         assertEquals(42, (Object) x.getValue());
  73         assertEquals(2, recorder.getEvents().size());
  74
  75         {
  76             final AtomicVariable<Integer>.ValueChangedEvent event = recorder.getEvent(1);
  77
  78             assertSame(x, event.getSource());
  79             assertEquals(33, (Object) event.getOldValue());
  80             assertEquals(42, (Object) event.getNewValue());
  81         }
  82     }
  83
  84 }