001/* 002 * Copyright (C) 2013 The Guava Authors 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016 017package com.google.common.collect.testing.google; 018 019import static com.google.common.collect.testing.Helpers.assertContentsAnyOrder; 020import static com.google.common.collect.testing.Helpers.assertEmpty; 021import static com.google.common.collect.testing.features.CollectionSize.SEVERAL; 022import static com.google.common.collect.testing.features.CollectionSize.ZERO; 023import static com.google.common.collect.testing.features.MapFeature.ALLOWS_NULL_VALUES; 024import static com.google.common.collect.testing.features.MapFeature.ALLOWS_NULL_VALUE_QUERIES; 025import static com.google.common.collect.testing.features.MapFeature.SUPPORTS_PUT; 026import static com.google.common.collect.testing.features.MapFeature.SUPPORTS_REMOVE; 027 028import com.google.common.annotations.GwtCompatible; 029import com.google.common.collect.Multimap; 030import com.google.common.collect.testing.Helpers; 031import com.google.common.collect.testing.features.CollectionSize; 032import com.google.common.collect.testing.features.MapFeature; 033import java.util.Collection; 034import org.junit.Ignore; 035 036/** 037 * Tests for {@code Multimap.asMap().get(Object)}. 038 * 039 * @author Louis Wasserman 040 */ 041@GwtCompatible 042@Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests. 043public class MultimapAsMapGetTester<K, V> extends AbstractMultimapTester<K, V, Multimap<K, V>> { 044 045 @CollectionSize.Require(SEVERAL) 046 @MapFeature.Require(SUPPORTS_REMOVE) 047 public void testPropagatesRemoveToMultimap() { 048 resetContainer( 049 Helpers.mapEntry(k0(), v0()), Helpers.mapEntry(k0(), v3()), Helpers.mapEntry(k0(), v2())); 050 Collection<V> result = multimap().asMap().get(k0()); 051 assertTrue(result.remove(v0())); 052 assertFalse(multimap().containsEntry(k0(), v0())); 053 assertEquals(2, multimap().size()); 054 } 055 056 @CollectionSize.Require(absent = ZERO) 057 @MapFeature.Require(SUPPORTS_REMOVE) 058 public void testPropagatesRemoveLastElementToMultimap() { 059 Collection<V> result = multimap().asMap().get(k0()); 060 assertTrue(result.remove(v0())); 061 assertGet(k0()); 062 } 063 064 @CollectionSize.Require(absent = ZERO) 065 @MapFeature.Require(SUPPORTS_REMOVE) 066 public void testPropagatesClearToMultimap() { 067 Collection<V> result = multimap().asMap().get(k0()); 068 result.clear(); 069 assertGet(k0()); 070 assertEmpty(result); 071 } 072 073 @CollectionSize.Require(absent = ZERO) 074 @MapFeature.Require({SUPPORTS_PUT, ALLOWS_NULL_VALUES}) 075 public void testAddNullValue() { 076 Collection<V> result = multimap().asMap().get(k0()); 077 assertTrue(result.add(null)); 078 assertTrue(multimap().containsEntry(k0(), null)); 079 } 080 081 @CollectionSize.Require(absent = ZERO) 082 @MapFeature.Require({SUPPORTS_REMOVE, ALLOWS_NULL_VALUE_QUERIES}) 083 public void testRemoveNullValue() { 084 Collection<V> result = multimap().asMap().get(k0()); 085 assertFalse(result.remove(null)); 086 } 087 088 @CollectionSize.Require(absent = ZERO) 089 @MapFeature.Require(value = SUPPORTS_PUT, absent = ALLOWS_NULL_VALUES) 090 public void testAddNullValueUnsupported() { 091 Collection<V> result = multimap().asMap().get(k0()); 092 try { 093 result.add(null); 094 fail("Expected NullPointerException"); 095 } catch (NullPointerException expected) { 096 } 097 } 098 099 @CollectionSize.Require(absent = ZERO) 100 @MapFeature.Require(SUPPORTS_PUT) 101 public void testPropagatesAddToMultimap() { 102 Collection<V> result = multimap().asMap().get(k0()); 103 result.add(v3()); 104 assertContentsAnyOrder(multimap().get(k0()), v0(), v3()); 105 } 106 107 @CollectionSize.Require(absent = ZERO) 108 @MapFeature.Require({SUPPORTS_REMOVE, SUPPORTS_PUT}) 109 public void testPropagatesRemoveThenAddToMultimap() { 110 int oldSize = getNumElements(); 111 112 Collection<V> result = multimap().asMap().get(k0()); 113 assertTrue(result.remove(v0())); 114 115 assertFalse(multimap().containsKey(k0())); 116 assertFalse(multimap().containsEntry(k0(), v0())); 117 assertEmpty(result); 118 119 assertTrue(result.add(v1())); 120 assertTrue(result.add(v2())); 121 122 assertContentsAnyOrder(result, v1(), v2()); 123 assertContentsAnyOrder(multimap().get(k0()), v1(), v2()); 124 assertTrue(multimap().containsKey(k0())); 125 assertFalse(multimap().containsEntry(k0(), v0())); 126 assertTrue(multimap().containsEntry(k0(), v2())); 127 assertEquals(oldSize + 1, multimap().size()); 128 } 129 130 @CollectionSize.Require(absent = ZERO) 131 @MapFeature.Require(SUPPORTS_REMOVE) 132 public void testReflectsMultimapRemove() { 133 Collection<V> result = multimap().asMap().get(k0()); 134 multimap().removeAll(k0()); 135 assertEmpty(result); 136 } 137}