| package com.yahoo.labs.samoa.topology.impl; |
| |
| /* |
| * #%L |
| * SAMOA |
| * %% |
| * Copyright (C) 2013 Yahoo! Inc. |
| * %% |
| * Licensed 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. |
| * #L% |
| */ |
| |
| import static org.junit.Assert.*; |
| import mockit.Mocked; |
| import mockit.Verifications; |
| |
| import org.junit.After; |
| import org.junit.Test; |
| |
| /** |
| * @author Anh Thu Vu |
| * |
| */ |
| public class ThreadsEngineTest { |
| |
| @Mocked |
| ThreadsTopology topology; |
| |
| private final int numThreads = 4; |
| private final int numThreadsSmaller = 3; |
| private final int numThreadsLarger = 5; |
| |
| @After |
| public void cleanup() { |
| ThreadsEngine.clearThreadPool(); |
| } |
| |
| @Test |
| public void testSetNumberOfThreadsSimple() { |
| ThreadsEngine.setNumberOfThreads(numThreads); |
| assertEquals("Number of threads is not set correctly.", numThreads, |
| ThreadsEngine.getNumberOfThreads(), 0); |
| } |
| |
| @Test |
| public void testSetNumberOfThreadsRepeat() { |
| ThreadsEngine.setNumberOfThreads(numThreads); |
| ThreadsEngine.setNumberOfThreads(numThreads); |
| assertEquals("Number of threads is not set correctly.", numThreads, |
| ThreadsEngine.getNumberOfThreads(), 0); |
| } |
| |
| @Test |
| public void testSetNumberOfThreadsIncrease() { |
| ThreadsEngine.setNumberOfThreads(numThreads); |
| ThreadsEngine.setNumberOfThreads(numThreadsLarger); |
| assertEquals("Number of threads is not set correctly.", numThreadsLarger, |
| ThreadsEngine.getNumberOfThreads(), 0); |
| } |
| |
| @Test(expected = IllegalStateException.class) |
| public void testSetNumberOfThreadsDecrease() { |
| ThreadsEngine.setNumberOfThreads(numThreads); |
| ThreadsEngine.setNumberOfThreads(numThreadsSmaller); |
| // Exception expected |
| } |
| |
| @Test(expected = IllegalStateException.class) |
| public void testSetNumberOfThreadsNegative() { |
| ThreadsEngine.setNumberOfThreads(-1); |
| // Exception expected |
| } |
| |
| @Test(expected = IllegalStateException.class) |
| public void testSetNumberOfThreadsZero() { |
| ThreadsEngine.setNumberOfThreads(0); |
| // Exception expected |
| } |
| |
| @Test |
| public void testClearThreadPool() { |
| ThreadsEngine.setNumberOfThreads(numThreads); |
| ThreadsEngine.clearThreadPool(); |
| assertEquals("ThreadsEngine was not shutdown properly.", 0, ThreadsEngine.getNumberOfThreads()); |
| } |
| |
| @Test |
| public void testGetThreadWithIndexWithinPoolSize() { |
| ThreadsEngine.setNumberOfThreads(numThreads); |
| for (int i = 0; i < numThreads; i++) { |
| assertNotNull("ExecutorService is not initialized correctly.", ThreadsEngine.getThreadWithIndex(i)); |
| } |
| } |
| |
| @Test |
| public void testGetThreadWithIndexOutOfPoolSize() { |
| ThreadsEngine.setNumberOfThreads(numThreads); |
| for (int i = 0; i < numThreads + 3; i++) { |
| assertNotNull("ExecutorService is not initialized correctly.", ThreadsEngine.getThreadWithIndex(i)); |
| } |
| } |
| |
| @Test(expected = IllegalStateException.class) |
| public void testGetThreadWithIndexFromEmptyPool() { |
| for (int i = 0; i < numThreads; i++) { |
| ThreadsEngine.getThreadWithIndex(i); |
| } |
| } |
| |
| @Test |
| public void testSubmitTopology() { |
| ThreadsEngine.submitTopology(topology, numThreads); |
| new Verifications() { |
| { |
| topology.run(); |
| times = 1; |
| } |
| }; |
| assertEquals("Number of threads is not set correctly.", numThreads, |
| ThreadsEngine.getNumberOfThreads(), 0); |
| } |
| |
| } |