Coverage Summary for Class: MultimapContainsKeyTester (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.features.CollectionSize.ZERO;
20 import static com.google.common.collect.testing.features.MapFeature.ALLOWS_NULL_KEYS;
21 import static com.google.common.collect.testing.features.MapFeature.ALLOWS_NULL_KEY_QUERIES;
22 
23 import com.google.common.annotations.GwtCompatible;
24 import com.google.common.collect.Multimap;
25 import com.google.common.collect.testing.features.CollectionSize;
26 import com.google.common.collect.testing.features.MapFeature;
27 import org.junit.Ignore;
28 
29 /**
30  * Tester for the {@code containsKey} methods of {@code Multimap} and its {@code asMap()} view.
31  *
32  * @author Louis Wasserman
33  */
34 @GwtCompatible
35 @Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.
36 public class MultimapContainsKeyTester<K, V> extends AbstractMultimapTester<K, V, Multimap<K, V>> {
37   @CollectionSize.Require(absent = ZERO)
38   public void testContainsKeyYes() {
39     assertTrue(multimap().containsKey(k0()));
40   }
41 
42   public void testContainsKeyNo() {
43     assertFalse(multimap().containsKey(k3()));
44   }
45 
46   public void testContainsKeysFromKeySet() {
47     for (K k : multimap().keySet()) {
48       assertTrue(multimap().containsKey(k));
49     }
50   }
51 
52   public void testContainsKeyAgreesWithGet() {
53     for (K k : sampleKeys()) {
54       assertEquals(!multimap().get(k).isEmpty(), multimap().containsKey(k));
55     }
56   }
57 
58   public void testContainsKeyAgreesWithAsMap() {
59     for (K k : sampleKeys()) {
60       assertEquals(multimap().containsKey(k), multimap().asMap().containsKey(k));
61     }
62   }
63 
64   public void testContainsKeyAgreesWithKeySet() {
65     for (K k : sampleKeys()) {
66       assertEquals(multimap().containsKey(k), multimap().keySet().contains(k));
67     }
68   }
69 
70   @MapFeature.Require(ALLOWS_NULL_KEYS)
71   @CollectionSize.Require(absent = ZERO)
72   public void testContainsKeyNullPresent() {
73     initMultimapWithNullKey();
74     assertTrue(multimap().containsKey(null));
75   }
76 
77   @MapFeature.Require(ALLOWS_NULL_KEY_QUERIES)
78   public void testContainsKeyNullAbsent() {
79     assertFalse(multimap().containsKey(null));
80   }
81 
82   @MapFeature.Require(absent = ALLOWS_NULL_KEY_QUERIES)
83   public void testContainsKeyNullDisallowed() {
84     try {
85       multimap().containsKey(null);
86       fail("Expected NullPointerException");
87     } catch (NullPointerException expected) {
88       // success
89     }
90   }
91 }