tom | 8ccc0bf | 2014-09-10 15:34:13 -0700 | [diff] [blame] | 1 | package org.onlab.onos.event.impl; |
| 2 | |
| 3 | import org.junit.After; |
| 4 | import org.junit.Before; |
| 5 | import org.junit.Test; |
| 6 | import org.onlab.onos.event.AbstractEvent; |
| 7 | import org.onlab.onos.event.EventSink; |
| 8 | |
| 9 | import java.util.ArrayList; |
| 10 | import java.util.List; |
| 11 | import java.util.concurrent.CountDownLatch; |
| 12 | import java.util.concurrent.TimeUnit; |
| 13 | |
| 14 | import static org.junit.Assert.assertEquals; |
| 15 | |
| 16 | /** |
| 17 | * Test of the even dispatcher mechanism. |
| 18 | */ |
| 19 | public class SimpleEventDispatcherTest { |
| 20 | |
| 21 | private final SimpleEventDispatcher dispatcher = new SimpleEventDispatcher(); |
| 22 | private final PrickleSink prickleSink = new PrickleSink(); |
| 23 | private final GooSink gooSink = new GooSink(); |
| 24 | |
| 25 | @Before |
| 26 | public void setUp() { |
| 27 | dispatcher.activate(); |
| 28 | dispatcher.addSink(Prickle.class, prickleSink); |
| 29 | dispatcher.addSink(Goo.class, gooSink); |
| 30 | } |
| 31 | |
| 32 | @After |
| 33 | public void tearDown() { |
| 34 | dispatcher.removeSink(Goo.class); |
| 35 | dispatcher.removeSink(Prickle.class); |
| 36 | dispatcher.deactivate(); |
| 37 | } |
| 38 | |
| 39 | @Test |
| 40 | public void post() throws Exception { |
| 41 | prickleSink.latch = new CountDownLatch(1); |
| 42 | dispatcher.post(new Prickle("yo")); |
| 43 | prickleSink.latch.await(100, TimeUnit.MILLISECONDS); |
| 44 | validate(prickleSink, "yo"); |
| 45 | validate(gooSink); |
| 46 | } |
| 47 | |
| 48 | @Test |
| 49 | public void postEventWithBadSink() throws Exception { |
| 50 | gooSink.latch = new CountDownLatch(1); |
| 51 | dispatcher.post(new Goo("boom")); |
| 52 | gooSink.latch.await(100, TimeUnit.MILLISECONDS); |
| 53 | validate(gooSink, "boom"); |
| 54 | validate(prickleSink); |
| 55 | } |
| 56 | |
| 57 | @Test |
| 58 | public void postEventWithNoSink() throws Exception { |
| 59 | dispatcher.post(new Thing("boom")); |
| 60 | validate(gooSink); |
| 61 | validate(prickleSink); |
| 62 | } |
| 63 | |
| 64 | private void validate(Sink sink, String... strings) { |
| 65 | int i = 0; |
| 66 | assertEquals("incorrect event count", strings.length, sink.subjects.size()); |
| 67 | for (String string : strings) { |
| 68 | assertEquals("incorrect event", string, sink.subjects.get(i++)); |
| 69 | } |
| 70 | } |
| 71 | |
| 72 | private enum Type { FOO }; |
| 73 | |
| 74 | private static class Thing extends AbstractEvent<Type, String> { |
| 75 | protected Thing(String subject) { |
| 76 | super(Type.FOO, subject); |
| 77 | } |
| 78 | } |
| 79 | |
| 80 | private static class Prickle extends Thing { |
| 81 | protected Prickle(String subject) { |
| 82 | super(subject); |
| 83 | } |
| 84 | } |
| 85 | |
| 86 | private static class Goo extends Thing { |
| 87 | protected Goo(String subject) { |
| 88 | super(subject); |
| 89 | } |
| 90 | } |
| 91 | |
| 92 | private static class Sink { |
| 93 | final List<String> subjects = new ArrayList<>(); |
| 94 | CountDownLatch latch; |
| 95 | |
| 96 | protected void process(String subject) { |
| 97 | subjects.add(subject); |
| 98 | latch.countDown(); |
| 99 | } |
| 100 | } |
| 101 | |
| 102 | private static class PrickleSink extends Sink implements EventSink<Prickle> { |
| 103 | @Override |
| 104 | public void process(Prickle event) { |
| 105 | process(event.subject()); |
| 106 | } |
| 107 | } |
| 108 | |
| 109 | private static class GooSink extends Sink implements EventSink<Goo> { |
| 110 | @Override |
| 111 | public void process(Goo event) { |
| 112 | process(event.subject()); |
| 113 | throw new IllegalStateException("BOOM!"); |
| 114 | } |
| 115 | } |
| 116 | |
| 117 | } |