1 /* 2 * Copyright (C) 2009 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 17 package com.google.common.util.concurrent; 18 19 import junit.framework.TestCase; 20 21 import java.util.concurrent.TimeUnit; 22 import java.util.concurrent.TimeoutException; 23 24 /** 25 * Test cases for {@link SettableFuture}. 26 * 27 * @author Sven Mawson 28 */ 29 public class SettableFutureTest extends TestCase { 30 31 private SettableFuture<String> future; 32 private ListenableFutureTester tester; 33 34 @Override setUp()35 protected void setUp() throws Exception { 36 super.setUp(); 37 38 future = SettableFuture.create(); 39 tester = new ListenableFutureTester(future); 40 tester.setUp(); 41 } 42 testDefaultState()43 public void testDefaultState() throws Exception { 44 try { 45 future.get(5, TimeUnit.MILLISECONDS); 46 fail(); 47 } catch (TimeoutException expected) {} 48 } 49 testSetValue()50 public void testSetValue() throws Exception { 51 assertTrue(future.set("value")); 52 tester.testCompletedFuture("value"); 53 } 54 testSetFailure()55 public void testSetFailure() throws Exception { 56 assertTrue(future.setException(new Exception("failure"))); 57 tester.testFailedFuture("failure"); 58 } 59 testSetFailureNull()60 public void testSetFailureNull() throws Exception { 61 try { 62 future.setException(null); 63 fail(); 64 } catch (NullPointerException expected) { 65 } 66 assertFalse(future.isDone()); 67 assertTrue(future.setException(new Exception("failure"))); 68 tester.testFailedFuture("failure"); 69 } 70 testCancel()71 public void testCancel() throws Exception { 72 assertTrue(future.cancel(true)); 73 tester.testCancelledFuture(); 74 } 75 } 76