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

1 /*
2  * Copyright (C) 2008 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.testers;
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.testing.AbstractMapTester;
25 import com.google.common.collect.testing.WrongType;
26 import com.google.common.collect.testing.features.CollectionSize;
27 import com.google.common.collect.testing.features.MapFeature;
28 import org.junit.Ignore;
29 
30 /**
31  * A generic JUnit test which tests {@code containsKey()} operations on a map. Can't be invoked
32  * directly; please see {@link com.google.common.collect.testing.MapTestSuiteBuilder}.
33  *
34  * @author George van den Driessche
35  */
36 @GwtCompatible
37 @Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.
38 public class MapContainsKeyTester<K, V> extends AbstractMapTester<K, V> {
39   @CollectionSize.Require(absent = ZERO)
40   public void testContains_yes() {
41     assertTrue("containsKey(present) should return true", getMap().containsKey(k0()));
42   }
43 
44   public void testContains_no() {
45     assertFalse("containsKey(notPresent) should return false", getMap().containsKey(k3()));
46   }
47 
48   @MapFeature.Require(ALLOWS_NULL_KEY_QUERIES)
49   public void testContains_nullNotContainedButAllowed() {
50     assertFalse("containsKey(null) should return false", getMap().containsKey(null));
51   }
52 
53   @MapFeature.Require(absent = ALLOWS_NULL_KEY_QUERIES)
54   public void testContains_nullNotContainedAndUnsupported() {
55     expectNullKeyMissingWhenNullKeysUnsupported("containsKey(null) should return false or throw");
56   }
57 
58   @MapFeature.Require(ALLOWS_NULL_KEYS)
59   @CollectionSize.Require(absent = ZERO)
60   public void testContains_nonNullWhenNullContained() {
61     initMapWithNullKey();
62     assertFalse("containsKey(notPresent) should return false", getMap().containsKey(k3()));
63   }
64 
65   @MapFeature.Require(ALLOWS_NULL_KEYS)
66   @CollectionSize.Require(absent = ZERO)
67   public void testContains_nullContained() {
68     initMapWithNullKey();
69     assertTrue("containsKey(null) should return true", getMap().containsKey(null));
70   }
71 
72   public void testContains_wrongType() {
73     try {
74       // noinspection SuspiciousMethodCalls
75       assertFalse(
76           "containsKey(wrongType) should return false or throw",
77           getMap().containsKey(WrongType.VALUE));
78     } catch (ClassCastException tolerated) {
79     }
80   }
81 }