1/* 2 * Copyright (C) 2011 The Guava Authors 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.google.common.util.concurrent; 18 19import com.google.common.collect.ImmutableList; 20 21import junit.framework.TestCase; 22 23import java.util.List; 24import java.util.concurrent.Callable; 25import java.util.concurrent.TimeUnit; 26 27/** 28 * Tests for {@link AbstractListeningExecutorService}. 29 * 30 * @author Colin Decker 31 */ 32public class AbstractListeningExecutorServiceTest extends TestCase { 33 34 public void testSubmit() throws Exception { 35 /* 36 * Mostly just tests that ListenableFutureTasks are created and run; tests for 37 * ListenableFutureTask should ensure that listeners are called correctly. 38 */ 39 40 TestListeningExecutorService e = new TestListeningExecutorService(); 41 42 TestRunnable runnable = new TestRunnable(); 43 ListenableFuture<?> runnableFuture = e.submit(runnable); 44 assertTrue(runnableFuture instanceof ListenableFutureTask); 45 assertTrue(runnableFuture.isDone()); 46 assertTrue(runnable.run); 47 48 ListenableFuture<String> callableFuture = e.submit(new TestCallable()); 49 assertTrue(callableFuture instanceof ListenableFutureTask); 50 assertTrue(callableFuture.isDone()); 51 assertEquals("foo", callableFuture.get()); 52 53 TestRunnable runnable2 = new TestRunnable(); 54 ListenableFuture<Integer> runnableFuture2 = e.submit(runnable2, 3); 55 assertTrue(runnableFuture2 instanceof ListenableFutureTask); 56 assertTrue(runnableFuture2.isDone()); 57 assertTrue(runnable2.run); 58 assertEquals((Integer) 3, runnableFuture2.get()); 59 } 60 61 private static class TestRunnable implements Runnable { 62 boolean run = false; 63 64 @Override 65 public void run() { 66 run = true; 67 } 68 } 69 70 private static class TestCallable implements Callable<String> { 71 @Override 72 public String call() { 73 return "foo"; 74 } 75 } 76 77 /** 78 * Simple same thread listening executor service that doesn't handle shutdown. 79 */ 80 private static class TestListeningExecutorService extends AbstractListeningExecutorService { 81 82 @Override 83 public void execute(Runnable runnable) { 84 assertTrue(runnable instanceof ListenableFutureTask); 85 runnable.run(); 86 } 87 88 @Override 89 public void shutdown() { 90 } 91 92 @Override 93 public List<Runnable> shutdownNow() { 94 return ImmutableList.of(); 95 } 96 97 @Override 98 public boolean isShutdown() { 99 return false; 100 } 101 102 @Override 103 public boolean isTerminated() { 104 return false; 105 } 106 107 @Override 108 public boolean awaitTermination(long timeout, TimeUnit unit) { 109 return false; 110 } 111 } 112} 113