ListMultimapRemoveTester.java revision 0888a09821a98ac0680fad765217302858e70fa4 
1/*
2 * Copyright (C) 2012 The Guava Authors
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
5 * in compliance with the License. You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software distributed under the License
10 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
11 * or implied. See the License for the specific language governing permissions and limitations under
12 * the License.
13 */
14
15package com.google.common.collect.testing.google;
16
17import static com.google.common.collect.testing.Helpers.copyToList;
18import static com.google.common.collect.testing.Helpers.mapEntry;
19import static com.google.common.collect.testing.features.CollectionSize.SEVERAL;
20import static com.google.common.collect.testing.features.MapFeature.SUPPORTS_REMOVE;
21import static org.truth0.Truth.ASSERT;
22
23import com.google.common.annotations.GwtCompatible;
24import com.google.common.collect.ListMultimap;
25import com.google.common.collect.testing.features.CollectionSize;
26import com.google.common.collect.testing.features.MapFeature;
27
28import java.util.Arrays;
29import java.util.Collection;
30import java.util.List;
31import java.util.Map;
32
33/**
34 * Testers for {@link ListMultimap#remove(Object, Object)}.
35 *
36 * @author Louis Wasserman
37 */
38@GwtCompatible
39public class ListMultimapRemoveTester<K, V> extends AbstractListMultimapTester<K, V> {
40  @SuppressWarnings("unchecked")
41  @MapFeature.Require(SUPPORTS_REMOVE)
42  @CollectionSize.Require(SEVERAL)
43  public void testMultimapRemoveDeletesFirstOccurrence() {
44    K k = sampleKeys().e0;
45    V v0 = sampleValues().e0;
46    V v1 = sampleValues().e2;
47    resetContainer(mapEntry(k, v0), mapEntry(k, v1), mapEntry(k, v0));
48
49    List<V> list = multimap().get(k);
50    multimap().remove(k, v0);
51    ASSERT.that(list).has().exactly(v1, v0).inOrder();
52  }
53
54  @SuppressWarnings("unchecked")
55  @MapFeature.Require(SUPPORTS_REMOVE)
56  @CollectionSize.Require(SEVERAL)
57  public void testRemoveAtIndexFromGetPropagates() {
58    K k = sampleKeys().e0;
59    V v0 = sampleValues().e0;
60    V v1 = sampleValues().e2;
61    List<V> values = Arrays.asList(v0, v1, v0);
62
63    for (int i = 0; i < 3; i++) {
64      resetContainer(mapEntry(k, v0), mapEntry(k, v1), mapEntry(k, v0));
65      List<V> expectedValues = copyToList(values);
66
67      multimap().get(k).remove(i);
68      expectedValues.remove(i);
69
70      assertGet(k, expectedValues);
71    }
72  }
73
74  @SuppressWarnings("unchecked")
75  @MapFeature.Require(SUPPORTS_REMOVE)
76  @CollectionSize.Require(SEVERAL)
77  public void testRemoveAtIndexFromAsMapPropagates() {
78    K k = sampleKeys().e0;
79    V v0 = sampleValues().e0;
80    V v1 = sampleValues().e2;
81    List<V> values = Arrays.asList(v0, v1, v0);
82
83    for (int i = 0; i < 3; i++) {
84      resetContainer(mapEntry(k, v0), mapEntry(k, v1), mapEntry(k, v0));
85      List<V> expectedValues = copyToList(values);
86
87      List<V> asMapValue = (List<V>) multimap().asMap().get(k);
88      asMapValue.remove(i);
89      expectedValues.remove(i);
90
91      assertGet(k, expectedValues);
92    }
93  }
94
95  @SuppressWarnings("unchecked")
96  @MapFeature.Require(SUPPORTS_REMOVE)
97  @CollectionSize.Require(SEVERAL)
98  public void testRemoveAtIndexFromAsMapEntrySetPropagates() {
99    K k = sampleKeys().e0;
100    V v0 = sampleValues().e0;
101    V v1 = sampleValues().e2;
102    List<V> values = Arrays.asList(v0, v1, v0);
103
104    for (int i = 0; i < 3; i++) {
105      resetContainer(mapEntry(k, v0), mapEntry(k, v1), mapEntry(k, v0));
106      List<V> expectedValues = copyToList(values);
107
108      Map.Entry<K, Collection<V>> asMapEntry = multimap().asMap().entrySet().iterator().next();
109      List<V> asMapValue = (List<V>) asMapEntry.getValue();
110      asMapValue.remove(i);
111      expectedValues.remove(i);
112
113      assertGet(k, expectedValues);
114    }
115  }
116}
117