Coverage Summary for Class: MultimapAsMapGetTester (com.google.common.collect.testing.google)

1 /*
2  * Copyright (C) 2013 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.collect.testing.google;
18 
19 import static com.google.common.collect.testing.Helpers.assertContentsAnyOrder;
20 import static com.google.common.collect.testing.Helpers.assertEmpty;
21 import static com.google.common.collect.testing.features.CollectionSize.SEVERAL;
22 import static com.google.common.collect.testing.features.CollectionSize.ZERO;
23 import static com.google.common.collect.testing.features.MapFeature.ALLOWS_NULL_VALUES;
24 import static com.google.common.collect.testing.features.MapFeature.ALLOWS_NULL_VALUE_QUERIES;
25 import static com.google.common.collect.testing.features.MapFeature.SUPPORTS_PUT;
26 import static com.google.common.collect.testing.features.MapFeature.SUPPORTS_REMOVE;
27 
28 import com.google.common.annotations.GwtCompatible;
29 import com.google.common.collect.Multimap;
30 import com.google.common.collect.testing.Helpers;
31 import com.google.common.collect.testing.features.CollectionSize;
32 import com.google.common.collect.testing.features.MapFeature;
33 import java.util.Collection;
34 import org.junit.Ignore;
35 
36 /**
37  * Tests for {@code Multimap.asMap().get(Object)}.
38  *
39  * @author Louis Wasserman
40  */
41 @GwtCompatible
42 @Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.
43 public class MultimapAsMapGetTester<K, V> extends AbstractMultimapTester<K, V, Multimap<K, V>> {
44 
45   @CollectionSize.Require(SEVERAL)
46   @MapFeature.Require(SUPPORTS_REMOVE)
47   public void testPropagatesRemoveToMultimap() {
48     resetContainer(
49         Helpers.mapEntry(k0(), v0()), Helpers.mapEntry(k0(), v3()), Helpers.mapEntry(k0(), v2()));
50     Collection<V> result = multimap().asMap().get(k0());
51     assertTrue(result.remove(v0()));
52     assertFalse(multimap().containsEntry(k0(), v0()));
53     assertEquals(2, multimap().size());
54   }
55 
56   @CollectionSize.Require(absent = ZERO)
57   @MapFeature.Require(SUPPORTS_REMOVE)
58   public void testPropagatesRemoveLastElementToMultimap() {
59     Collection<V> result = multimap().asMap().get(k0());
60     assertTrue(result.remove(v0()));
61     assertGet(k0());
62   }
63 
64   @CollectionSize.Require(absent = ZERO)
65   @MapFeature.Require(SUPPORTS_REMOVE)
66   public void testPropagatesClearToMultimap() {
67     Collection<V> result = multimap().asMap().get(k0());
68     result.clear();
69     assertGet(k0());
70     assertEmpty(result);
71   }
72 
73   @CollectionSize.Require(absent = ZERO)
74   @MapFeature.Require({SUPPORTS_PUT, ALLOWS_NULL_VALUES})
75   public void testAddNullValue() {
76     Collection<V> result = multimap().asMap().get(k0());
77     assertTrue(result.add(null));
78     assertTrue(multimap().containsEntry(k0(), null));
79   }
80 
81   @CollectionSize.Require(absent = ZERO)
82   @MapFeature.Require({SUPPORTS_REMOVE, ALLOWS_NULL_VALUE_QUERIES})
83   public void testRemoveNullValue() {
84     Collection<V> result = multimap().asMap().get(k0());
85     assertFalse(result.remove(null));
86   }
87 
88   @CollectionSize.Require(absent = ZERO)
89   @MapFeature.Require(value = SUPPORTS_PUT, absent = ALLOWS_NULL_VALUES)
90   public void testAddNullValueUnsupported() {
91     Collection<V> result = multimap().asMap().get(k0());
92     try {
93       result.add(null);
94       fail("Expected NullPointerException");
95     } catch (NullPointerException expected) {
96     }
97   }
98 
99   @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 }