Coverage Summary for Class: MultimapKeysTester (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.Helpers.assertContainsAllOf;
18 import static com.google.common.collect.testing.features.CollectionFeature.SUPPORTS_ITERATOR_REMOVE;
19 import static com.google.common.collect.testing.features.CollectionSize.ONE;
20 import static com.google.common.collect.testing.features.CollectionSize.SEVERAL;
21 import static com.google.common.collect.testing.features.MapFeature.ALLOWS_NULL_KEYS;
22 import static com.google.common.collect.testing.features.MapFeature.ALLOWS_NULL_KEY_QUERIES;
23 import static com.google.common.collect.testing.features.MapFeature.SUPPORTS_REMOVE;
24 
25 import com.google.common.annotations.GwtCompatible;
26 import com.google.common.collect.Multimap;
27 import com.google.common.collect.Multiset;
28 import com.google.common.collect.Multisets;
29 import com.google.common.collect.testing.Helpers;
30 import com.google.common.collect.testing.features.CollectionFeature;
31 import com.google.common.collect.testing.features.CollectionSize;
32 import com.google.common.collect.testing.features.MapFeature;
33 import java.util.Iterator;
34 import org.junit.Ignore;
35 
36 /**
37  * Tester for {@code Multimap.entries}.
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 MultimapKeysTester<K, V> extends AbstractMultimapTester<K, V, Multimap<K, V>> {
44   @CollectionSize.Require(SEVERAL)
45   public void testKeys() {
46     resetContainer(
47         Helpers.mapEntry(k0(), v0()), Helpers.mapEntry(k0(), v1()), Helpers.mapEntry(k1(), v0()));
48     Multiset<K> keys = multimap().keys();
49     assertEquals(2, keys.count(k0()));
50     assertEquals(1, keys.count(k1()));
51     assertEquals(3, keys.size());
52     assertContainsAllOf(keys, k0(), k1());
53     assertContainsAllOf(
54         keys.entrySet(), Multisets.immutableEntry(k0(), 2), Multisets.immutableEntry(k1(), 1));
55   }
56 
57   @MapFeature.Require(ALLOWS_NULL_KEY_QUERIES)
58   public void testKeysCountAbsentNullKey() {
59     assertEquals(0, multimap().keys().count(null));
60   }
61 
62   @CollectionSize.Require(SEVERAL)
63   @MapFeature.Require(ALLOWS_NULL_KEYS)
64   public void testKeysWithNullKey() {
65     resetContainer(
66         Helpers.mapEntry((K) null, v0()),
67         Helpers.mapEntry((K) null, v1()),
68         Helpers.mapEntry(k1(), v0()));
69     Multiset<K> keys = multimap().keys();
70     assertEquals(2, keys.count(null));
71     assertEquals(1, keys.count(k1()));
72     assertEquals(3, keys.size());
73     assertContainsAllOf(keys, null, k1());
74     assertContainsAllOf(
75         keys.entrySet(), Multisets.immutableEntry((K) null, 2), Multisets.immutableEntry(k1(), 1));
76   }
77 
78   public void testKeysElementSet() {
79     assertEquals(multimap().keySet(), multimap().keys().elementSet());
80   }
81 
82   @MapFeature.Require(SUPPORTS_REMOVE)
83   public void testKeysRemove() {
84     int original = multimap().keys().remove(k0(), 1);
85     assertEquals(Math.max(original - 1, 0), multimap().get(k0()).size());
86   }
87 
88   @CollectionSize.Require(ONE)
89   @CollectionFeature.Require(SUPPORTS_ITERATOR_REMOVE)
90   public void testKeysEntrySetIteratorRemove() {
91     Multiset<K> keys = multimap().keys();
92     Iterator<Multiset.Entry<K>> itr = keys.entrySet().iterator();
93     assertEquals(Multisets.immutableEntry(k0(), 1), itr.next());
94     itr.remove();
95     assertTrue(multimap().isEmpty());
96   }
97 
98   @CollectionSize.Require(SEVERAL)
99   @MapFeature.Require(SUPPORTS_REMOVE)
100   public void testKeysEntrySetRemove() {
101     resetContainer(
102         Helpers.mapEntry(k0(), v0()), Helpers.mapEntry(k0(), v1()), Helpers.mapEntry(k1(), v0()));
103     assertTrue(multimap().keys().entrySet().remove(Multisets.immutableEntry(k0(), 2)));
104     assertEquals(1, multimap().size());
105     assertTrue(multimap().containsEntry(k1(), v0()));
106   }
107 }