@Test
public void testMultipleChannelsWithSelector() {
QueueChannel channel1 = new QueueChannel();
QueueChannel channel2 = new QueueChannel();
channel1.send(new GenericMessage<String>("test1"));
channel1.send(new GenericMessage<String>("test2"));
channel1.send(new GenericMessage<String>("test3"));
channel2.send(new GenericMessage<String>("test1"));
channel2.send(new GenericMessage<String>("test2"));
channel2.send(new GenericMessage<String>("test3"));
ChannelPurger purger =
new ChannelPurger(
new MessageSelector() {
public boolean accept(Message<?> message) {
return (message.getPayload().equals("test2"));
}
},
channel1,
channel2);
List<Message<?>> purgedMessages = purger.purge();
assertEquals(4, purgedMessages.size());
Message<?> message1 = channel1.receive(0);
assertNotNull(message1);
assertEquals("test2", message1.getPayload());
assertNull(channel1.receive(0));
Message<?> message2 = channel2.receive(0);
assertNotNull(message2);
assertEquals("test2", message2.getPayload());
assertNull(channel2.receive(0));
}
@Test
public void testMultipleChannelsWithNoSelector() {
QueueChannel channel1 = new QueueChannel();
QueueChannel channel2 = new QueueChannel();
channel1.send(new GenericMessage<String>("test1"));
channel1.send(new GenericMessage<String>("test2"));
channel2.send(new GenericMessage<String>("test1"));
channel2.send(new GenericMessage<String>("test2"));
ChannelPurger purger = new ChannelPurger(channel1, channel2);
List<Message<?>> purgedMessages = purger.purge();
assertEquals(4, purgedMessages.size());
assertNull(channel1.receive(0));
assertNull(channel2.receive(0));
}
@Test
public void testPurgeNoneWithSelector() {
QueueChannel channel = new QueueChannel();
channel.send(new GenericMessage<String>("test1"));
channel.send(new GenericMessage<String>("test2"));
channel.send(new GenericMessage<String>("test3"));
ChannelPurger purger =
new ChannelPurger(
new MessageSelector() {
public boolean accept(Message<?> message) {
return true;
}
},
channel);
List<Message<?>> purgedMessages = purger.purge();
assertEquals(0, purgedMessages.size());
assertNotNull(channel.receive(0));
assertNotNull(channel.receive(0));
assertNotNull(channel.receive(0));
}
@Test
public void testPurgeAllWithoutSelector() {
QueueChannel channel = new QueueChannel();
channel.send(new GenericMessage<String>("test1"));
channel.send(new GenericMessage<String>("test2"));
channel.send(new GenericMessage<String>("test3"));
ChannelPurger purger = new ChannelPurger(channel);
List<Message<?>> purgedMessages = purger.purge();
assertEquals(3, purgedMessages.size());
assertNull(channel.receive(0));
}
@Test
public void testPurgeSubsetWithSelector() {
QueueChannel channel = new QueueChannel();
channel.send(new GenericMessage<String>("test1"));
channel.send(new GenericMessage<String>("test2"));
channel.send(new GenericMessage<String>("test3"));
ChannelPurger purger =
new ChannelPurger(
new MessageSelector() {
public boolean accept(Message<?> message) {
return (message.getPayload().equals("test2"));
}
},
channel);
List<Message<?>> purgedMessages = purger.purge();
assertEquals(2, purgedMessages.size());
Message<?> message = channel.receive(0);
assertNotNull(message);
assertEquals("test2", message.getPayload());
assertNull(channel.receive(0));
}