| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.gossip.manager.handlers; |
| |
| import org.apache.gossip.manager.GossipCore; |
| import org.apache.gossip.manager.GossipManager; |
| import org.apache.gossip.model.ActiveGossipMessage; |
| import org.apache.gossip.model.Base; |
| import org.apache.gossip.udp.UdpSharedDataMessage; |
| import org.junit.Assert; |
| import org.junit.Test; |
| |
| public class MessageHandlerTest { |
| private class FakeMessage extends Base { |
| public FakeMessage() { |
| } |
| } |
| |
| private class FakeMessageData extends Base { |
| public int data; |
| |
| public FakeMessageData(int data) { |
| this.data = data; |
| } |
| } |
| |
| private class FakeMessageDataHandler implements MessageHandler { |
| public int data; |
| |
| public FakeMessageDataHandler() { |
| data = 0; |
| } |
| |
| public boolean invoke(GossipCore gossipCore, GossipManager gossipManager, Base base) { |
| data = ((FakeMessageData) base).data; |
| return true; |
| } |
| } |
| |
| private class FakeMessageHandler implements MessageHandler { |
| public int counter; |
| |
| public FakeMessageHandler() { |
| counter = 0; |
| } |
| |
| public boolean invoke(GossipCore gossipCore, GossipManager gossipManager, Base base) { |
| counter++; |
| return true; |
| } |
| } |
| |
| @Test |
| public void testSimpleHandler() { |
| MessageHandler mi = new TypedMessageHandler(FakeMessage.class, new FakeMessageHandler()); |
| Assert.assertTrue(mi.invoke(null, null, new FakeMessage())); |
| Assert.assertFalse(mi.invoke(null, null, new ActiveGossipMessage())); |
| } |
| |
| @Test(expected = NullPointerException.class) |
| public void testSimpleHandlerNullClassConstructor() { |
| new TypedMessageHandler(null, new FakeMessageHandler()); |
| } |
| |
| @Test(expected = NullPointerException.class) |
| public void testSimpleHandlerNullHandlerConstructor() { |
| new TypedMessageHandler(FakeMessage.class, null); |
| } |
| |
| @Test |
| public void testCallCountSimpleHandler() { |
| FakeMessageHandler h = new FakeMessageHandler(); |
| MessageHandler mi = new TypedMessageHandler(FakeMessage.class, h); |
| mi.invoke(null, null, new FakeMessage()); |
| Assert.assertEquals(1, h.counter); |
| mi.invoke(null, null, new ActiveGossipMessage()); |
| Assert.assertEquals(1, h.counter); |
| mi.invoke(null, null, new FakeMessage()); |
| Assert.assertEquals(2, h.counter); |
| } |
| |
| @Test(expected = NullPointerException.class) |
| @SuppressWarnings("all") |
| public void cantAddNullHandler() { |
| MessageHandler handler = MessageHandlerFactory.concurrentHandler(null); |
| } |
| |
| @Test(expected = NullPointerException.class) |
| public void cantAddNullHandler2() { |
| MessageHandler handler = MessageHandlerFactory.concurrentHandler( |
| new TypedMessageHandler(FakeMessage.class, new FakeMessageHandler()), |
| null, |
| new TypedMessageHandler(FakeMessage.class, new FakeMessageHandler()) |
| ); |
| } |
| |
| @Test |
| public void testMessageHandlerCombiner() { |
| //Empty combiner - false result |
| MessageHandler mi = MessageHandlerFactory.concurrentHandler(); |
| Assert.assertFalse(mi.invoke(null, null, new Base())); |
| |
| FakeMessageHandler h = new FakeMessageHandler(); |
| mi = MessageHandlerFactory.concurrentHandler( |
| new TypedMessageHandler(FakeMessage.class, h), |
| new TypedMessageHandler(FakeMessage.class, h) |
| ); |
| |
| Assert.assertTrue(mi.invoke(null, null, new FakeMessage())); |
| Assert.assertFalse(mi.invoke(null, null, new ActiveGossipMessage())); |
| Assert.assertEquals(2, h.counter); |
| |
| //Increase size in runtime. Should be 3 calls: 2+3 = 5 |
| mi = MessageHandlerFactory.concurrentHandler(mi, new TypedMessageHandler(FakeMessage.class, h)); |
| Assert.assertTrue(mi.invoke(null, null, new FakeMessage())); |
| Assert.assertEquals(5, h.counter); |
| } |
| |
| @Test |
| public void testMessageHandlerCombiner2levels() { |
| FakeMessageHandler h = new FakeMessageHandler(); |
| |
| MessageHandler mi1 = MessageHandlerFactory.concurrentHandler( |
| new TypedMessageHandler(FakeMessage.class, h), |
| new TypedMessageHandler(FakeMessage.class, h) |
| ); |
| |
| MessageHandler mi2 = MessageHandlerFactory.concurrentHandler( |
| new TypedMessageHandler(FakeMessage.class, h), |
| new TypedMessageHandler(FakeMessage.class, h) |
| ); |
| |
| MessageHandler mi = MessageHandlerFactory.concurrentHandler(mi1, mi2); |
| |
| Assert.assertTrue(mi.invoke(null, null, new FakeMessage())); |
| Assert.assertEquals(4, h.counter); |
| } |
| |
| @Test |
| public void testMessageHandlerCombinerDataShipping() { |
| MessageHandler mi = MessageHandlerFactory.concurrentHandler(); |
| FakeMessageDataHandler h = new FakeMessageDataHandler(); |
| mi = MessageHandlerFactory.concurrentHandler(mi, new TypedMessageHandler(FakeMessageData.class, h)); |
| |
| Assert.assertTrue(mi.invoke(null, null, new FakeMessageData(101))); |
| Assert.assertEquals(101, h.data); |
| } |
| |
| @Test |
| public void testCombiningDefaultHandler() { |
| MessageHandler mi = MessageHandlerFactory.concurrentHandler( |
| MessageHandlerFactory.defaultHandler(), |
| new TypedMessageHandler(FakeMessage.class, new FakeMessageHandler()) |
| ); |
| //UdpSharedGossipDataMessage with null gossipCore -> exception |
| boolean thrown = false; |
| try { |
| mi.invoke(null, null, new UdpSharedDataMessage()); |
| } catch (NullPointerException e) { |
| thrown = true; |
| } |
| Assert.assertTrue(thrown); |
| //skips FakeMessage and FakeHandler works ok |
| Assert.assertTrue(mi.invoke(null, null, new FakeMessage())); |
| } |
| |
| } |