| /* |
| * 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.qpid.disttest.controller; |
| |
| import java.util.Timer; |
| import java.util.TimerTask; |
| |
| import org.junit.Assert; |
| |
| import org.apache.qpid.disttest.DistributedTestException; |
| |
| import org.junit.Assert; |
| import org.junit.Before; |
| import org.junit.After; |
| import org.junit.Test; |
| |
| import org.apache.qpid.test.utils.UnitTestBase; |
| import static org.junit.Assert.assertSame; |
| import static org.junit.Assert.assertNotSame; |
| import static org.junit.Assert.fail; |
| import static org.junit.Assert.assertNotNull; |
| |
| import static org.junit.Assert.assertFalse; |
| import static org.junit.Assert.assertTrue; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertNull; |
| |
| public class ClientRegistryTest extends UnitTestBase |
| { |
| private static final String CLIENT1_REGISTERED_NAME = "CLIENT1_REGISTERED_NAME"; |
| private static final String CLIENT2_REGISTERED_NAME = "CLIENT2_REGISTERED_NAME"; |
| private static final String CLIENT3_REGISTERED_NAME = "CLIENT3_REGISTERED_NAME"; |
| |
| private long _awaitDelay = 100; |
| |
| private ClientRegistry _clientRegistry = new ClientRegistry(); |
| |
| @Before |
| public void setUp() throws Exception |
| { |
| _awaitDelay = Long.getLong("ClientRegistryTest.awaitDelay", 100L); |
| |
| } |
| |
| @Test |
| public void testRegisterClient() |
| { |
| assertEquals((long) 0, (long) _clientRegistry.getClients().size()); |
| |
| _clientRegistry.registerClient(CLIENT1_REGISTERED_NAME); |
| assertEquals((long) 1, (long) _clientRegistry.getClients().size()); |
| } |
| |
| @Test |
| public void testRejectsDuplicateClientNames() |
| { |
| _clientRegistry.registerClient(CLIENT1_REGISTERED_NAME); |
| try |
| { |
| _clientRegistry.registerClient(CLIENT1_REGISTERED_NAME); |
| fail("Should have thrown an exception"); |
| } |
| catch (final DistributedTestException e) |
| { |
| // pass |
| } |
| } |
| |
| @Test |
| public void testAwaitOneClientWhenClientNotRegistered() |
| { |
| int numberOfClientsAbsent = _clientRegistry.awaitClients(1, _awaitDelay); |
| assertEquals((long) 1, (long) numberOfClientsAbsent); |
| } |
| |
| @Test |
| public void testAwaitOneClientWhenClientAlreadyRegistered() |
| { |
| _clientRegistry.registerClient(CLIENT1_REGISTERED_NAME); |
| |
| int numberOfClientsAbsent = _clientRegistry.awaitClients(1, _awaitDelay); |
| assertEquals((long) 0, (long) numberOfClientsAbsent); |
| } |
| |
| @Test |
| public void testAwaitTwoClientsWhenClientRegistersWhilstWaiting() |
| { |
| _clientRegistry.registerClient(CLIENT1_REGISTERED_NAME); |
| registerClientLater(CLIENT2_REGISTERED_NAME, 50); |
| |
| int numberOfClientsAbsent = _clientRegistry.awaitClients(2, _awaitDelay); |
| assertEquals((long) 0, (long) numberOfClientsAbsent); |
| } |
| |
| @Test |
| public void testAwaitTimeoutForPromptRegistrations() |
| { |
| registerClientsLaterAndAssertResult("Clients registering every 100ms should be within 600ms timeout", |
| new int[] {300, 400, 500}, |
| 600, |
| 0); |
| } |
| |
| @Test |
| public void testAwaitTimeoutForWhenThirdRegistrationIsLate() |
| { |
| registerClientsLaterAndAssertResult("Third client registering tardily should exceed timeout", |
| new int[] {300, 400, 1500}, |
| 600, |
| 1); |
| } |
| |
| @Test |
| public void testAwaitTimeoutWhenSecondAndThirdRegistrationsAreLate() |
| { |
| registerClientsLaterAndAssertResult("Second and third clients registering tardily should exceed timeout", |
| new int[] {300, 1500, 1500}, |
| 600, |
| 2); |
| } |
| |
| private void registerClientsLaterAndAssertResult(String message, int[] registrationDelays, int timeout, int expectedNumberOfAbsentees) |
| { |
| registerClientLater(CLIENT1_REGISTERED_NAME, registrationDelays[0]); |
| registerClientLater(CLIENT2_REGISTERED_NAME, registrationDelays[1]); |
| registerClientLater(CLIENT3_REGISTERED_NAME, registrationDelays[2]); |
| |
| int numberOfClientsAbsent = _clientRegistry.awaitClients(3, timeout); |
| |
| assertEquals(message, (long) expectedNumberOfAbsentees, (long) numberOfClientsAbsent); |
| } |
| |
| private void registerClientLater(final String clientName, long delayInMillis) |
| { |
| doLater(new TimerTask() |
| { |
| @Override |
| public void run() |
| { |
| _clientRegistry.registerClient(clientName); |
| } |
| }, delayInMillis); |
| } |
| |
| private void doLater(TimerTask task, long delayInMillis) |
| { |
| Timer timer = new Timer(); |
| timer.schedule(task, delayInMillis); |
| } |
| } |