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

1 /*
2  * Copyright (C) 2012 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.mapEntry;
20 import static com.google.common.collect.testing.features.CollectionSize.SEVERAL;
21 import static com.google.common.collect.testing.features.CollectionSize.ZERO;
22 import static com.google.common.collect.testing.features.MapFeature.ALLOWS_NULL_KEYS;
23 import static com.google.common.collect.testing.features.MapFeature.ALLOWS_NULL_VALUES;
24 
25 import com.google.common.annotations.GwtCompatible;
26 import com.google.common.collect.Multimap;
27 import com.google.common.collect.testing.features.CollectionSize;
28 import com.google.common.collect.testing.features.MapFeature;
29 import java.util.Collection;
30 import java.util.Map.Entry;
31 import org.junit.Ignore;
32 
33 /**
34  * Tester for the {@code size} methods of {@code Multimap} and its views.
35  *
36  * @author Louis Wasserman
37  */
38 @GwtCompatible
39 @Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.
40 public class MultimapSizeTester<K, V> extends AbstractMultimapTester<K, V, Multimap<K, V>> {
41 
42   public void testSize() {
43     int expectedSize = getNumElements();
44     Multimap<K, V> multimap = multimap();
45     assertEquals(expectedSize, multimap.size());
46 
47     int size = 0;
48     for (Entry<K, V> entry : multimap.entries()) {
49       assertTrue(multimap.containsEntry(entry.getKey(), entry.getValue()));
50       size++;
51     }
52     assertEquals(expectedSize, size);
53 
54     int size2 = 0;
55     for (Entry<K, Collection<V>> entry2 : multimap.asMap().entrySet()) {
56       size2 += entry2.getValue().size();
57     }
58     assertEquals(expectedSize, size2);
59   }
60 
61   @CollectionSize.Require(ZERO)
62   public void testIsEmptyYes() {
63     assertTrue(multimap().isEmpty());
64   }
65 
66   @CollectionSize.Require(absent = ZERO)
67   public void testIsEmptyNo() {
68     assertFalse(multimap().isEmpty());
69   }
70 
71   @CollectionSize.Require(absent = ZERO)
72   @MapFeature.Require(ALLOWS_NULL_KEYS)
73   public void testSizeNullKey() {
74     initMultimapWithNullKey();
75     assertEquals(getNumElements(), multimap().size());
76     assertFalse(multimap().isEmpty());
77   }
78 
79   @CollectionSize.Require(absent = ZERO)
80   @MapFeature.Require(ALLOWS_NULL_VALUES)
81   public void testSizeNullValue() {
82     initMultimapWithNullValue();
83     assertEquals(getNumElements(), multimap().size());
84     assertFalse(multimap().isEmpty());
85   }
86 
87   @CollectionSize.Require(absent = ZERO)
88   @MapFeature.Require({ALLOWS_NULL_KEYS, ALLOWS_NULL_VALUES})
89   public void testSizeNullKeyAndValue() {
90     initMultimapWithNullKeyAndValue();
91     assertEquals(getNumElements(), multimap().size());
92     assertFalse(multimap().isEmpty());
93   }
94 
95   @CollectionSize.Require(SEVERAL)
96   public void testSizeMultipleValues() {
97     resetContainer(mapEntry(k0(), v0()), mapEntry(k0(), v1()), mapEntry(k0(), v2()));
98 
99     assertEquals(3, multimap().size());
100     assertEquals(3, multimap().entries().size());
101     assertEquals(3, multimap().keys().size());
102 
103     assertEquals(1, multimap().keySet().size());
104     assertEquals(1, multimap().asMap().size());
105   }
106 }