Coverage Summary for Class: SetMultimapAsMapTester (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"); 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 
15 package com.google.common.collect.testing.google;
16 
17 import static com.google.common.collect.testing.features.CollectionSize.SEVERAL;
18 import static com.google.common.collect.testing.features.MapFeature.SUPPORTS_REMOVE;
19 
20 import com.google.common.annotations.GwtCompatible;
21 import com.google.common.collect.Maps;
22 import com.google.common.collect.SetMultimap;
23 import com.google.common.collect.Sets;
24 import com.google.common.collect.testing.Helpers;
25 import com.google.common.collect.testing.features.CollectionSize;
26 import com.google.common.collect.testing.features.MapFeature;
27 import com.google.common.testing.EqualsTester;
28 import java.util.ArrayList;
29 import java.util.Collection;
30 import java.util.Collections;
31 import java.util.List;
32 import java.util.Map;
33 import java.util.Map.Entry;
34 import java.util.Set;
35 import org.junit.Ignore;
36 
37 /**
38  * Testers for {@link SetMultimap#asMap}.
39  *
40  * @author Louis Wasserman
41  * @param <K> The key type of the tested multimap.
42  * @param <V> The value type of the tested multimap.
43  */
44 @GwtCompatible
45 @Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.
46 public class SetMultimapAsMapTester<K, V> extends AbstractMultimapTester<K, V, SetMultimap<K, V>> {
47   public void testAsMapValuesImplementSet() {
48     for (Collection<V> valueCollection : multimap().asMap().values()) {
49       assertTrue(valueCollection instanceof Set);
50     }
51   }
52 
53   public void testAsMapGetImplementsSet() {
54     for (K key : multimap().keySet()) {
55       assertTrue(multimap().asMap().get(key) instanceof Set);
56     }
57   }
58 
59   @MapFeature.Require(SUPPORTS_REMOVE)
60   public void testAsMapRemoveImplementsSet() {
61     List<K> keys = new ArrayList<K>(multimap().keySet());
62     for (K key : keys) {
63       resetCollection();
64       assertTrue(multimap().asMap().remove(key) instanceof Set);
65     }
66   }
67 
68   @CollectionSize.Require(SEVERAL)
69   public void testEquals() {
70     resetContainer(
71         Helpers.mapEntry(k0(), v0()), Helpers.mapEntry(k1(), v0()), Helpers.mapEntry(k0(), v3()));
72     Map<K, Collection<V>> expected = Maps.newHashMap();
73     expected.put(k0(), Sets.newHashSet(v0(), v3()));
74     expected.put(k1(), Sets.newHashSet(v0()));
75     new EqualsTester().addEqualityGroup(expected, multimap().asMap()).testEquals();
76   }
77 
78   @CollectionSize.Require(SEVERAL)
79   public void testEntrySetEquals() {
80     resetContainer(
81         Helpers.mapEntry(k0(), v0()), Helpers.mapEntry(k1(), v0()), Helpers.mapEntry(k0(), v3()));
82     Set<Entry<K, Collection<V>>> expected = Sets.newHashSet();
83     expected.add(Helpers.mapEntry(k0(), (Collection<V>) Sets.newHashSet(v0(), v3())));
84     expected.add(Helpers.mapEntry(k1(), (Collection<V>) Sets.newHashSet(v0())));
85     new EqualsTester().addEqualityGroup(expected, multimap().asMap().entrySet()).testEquals();
86   }
87 
88   @CollectionSize.Require(SEVERAL)
89   @MapFeature.Require(SUPPORTS_REMOVE)
90   public void testValuesRemove() {
91     resetContainer(
92         Helpers.mapEntry(k0(), v0()), Helpers.mapEntry(k1(), v0()), Helpers.mapEntry(k0(), v3()));
93     assertTrue(multimap().asMap().values().remove(Collections.singleton(v0())));
94     assertEquals(2, multimap().size());
95     assertEquals(Collections.singletonMap(k0(), Sets.newHashSet(v0(), v3())), multimap().asMap());
96   }
97 }