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.cache; 18 19 import static org.easymock.EasyMock.createMock; 20 import static org.easymock.EasyMock.expect; 21 import static org.easymock.EasyMock.replay; 22 import static org.easymock.EasyMock.verify; 23 24 import com.google.common.collect.ImmutableList; 25 import com.google.common.collect.ImmutableMap; 26 27 import junit.framework.TestCase; 28 29 import java.util.concurrent.ExecutionException; 30 31 /** 32 * Unit test for {@link ForwardingCache}. 33 * 34 * @author Charles Fry 35 */ 36 public class ForwardingCacheTest extends TestCase { 37 private Cache<String, Boolean> forward; 38 private Cache<String, Boolean> mock; 39 40 @SuppressWarnings("unchecked") // createMock setUp()41 @Override public void setUp() throws Exception { 42 super.setUp(); 43 /* 44 * Class parameters must be raw, so we can't create a proxy with generic 45 * type arguments. The created proxy only records calls and returns null, so 46 * the type is irrelevant at runtime. 47 */ 48 mock = createMock(Cache.class); 49 forward = new ForwardingCache<String, Boolean>() { 50 @Override protected Cache<String, Boolean> delegate() { 51 return mock; 52 } 53 }; 54 } 55 testGetIfPresent()56 public void testGetIfPresent() throws ExecutionException { 57 expect(mock.getIfPresent("key")).andReturn(Boolean.TRUE); 58 replay(mock); 59 assertSame(Boolean.TRUE, forward.getIfPresent("key")); 60 verify(mock); 61 } 62 testGetAllPresent()63 public void testGetAllPresent() throws ExecutionException { 64 expect(mock.getAllPresent(ImmutableList.of("key"))) 65 .andReturn(ImmutableMap.of("key", Boolean.TRUE)); 66 replay(mock); 67 assertEquals(ImmutableMap.of("key", Boolean.TRUE), 68 forward.getAllPresent(ImmutableList.of("key"))); 69 verify(mock); 70 } 71 testInvalidate()72 public void testInvalidate() { 73 mock.invalidate("key"); 74 replay(mock); 75 forward.invalidate("key"); 76 verify(mock); 77 } 78 testInvalidateAllIterable()79 public void testInvalidateAllIterable() { 80 mock.invalidateAll(ImmutableList.of("key")); 81 replay(mock); 82 forward.invalidateAll(ImmutableList.of("key")); 83 verify(mock); 84 } 85 testInvalidateAll()86 public void testInvalidateAll() { 87 mock.invalidateAll(); 88 replay(mock); 89 forward.invalidateAll(); 90 verify(mock); 91 } 92 testSize()93 public void testSize() { 94 expect(mock.size()).andReturn(0L); 95 replay(mock); 96 forward.size(); 97 verify(mock); 98 } 99 testStats()100 public void testStats() { 101 expect(mock.stats()).andReturn(null); 102 replay(mock); 103 assertNull(forward.stats()); 104 verify(mock); 105 } 106 testAsMap()107 public void testAsMap() { 108 expect(mock.asMap()).andReturn(null); 109 replay(mock); 110 assertNull(forward.asMap()); 111 verify(mock); 112 } 113 testCleanUp()114 public void testCleanUp() { 115 mock.cleanUp(); 116 replay(mock); 117 forward.cleanUp(); 118 verify(mock); 119 } 120 121 /** 122 * Make sure that all methods are forwarded. 123 */ 124 private static class OnlyGet<K, V> extends ForwardingCache<K, V> { 125 @Override delegate()126 protected Cache<K, V> delegate() { 127 return null; 128 } 129 } 130 } 131