Coverage Summary for Class: MapContainsValueTester (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_VALUES;
21 import static com.google.common.collect.testing.features.MapFeature.ALLOWS_NULL_VALUE_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 containsValue()} 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  * @author Chris Povirk
36  */
37 @GwtCompatible
38 @Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.
39 public class MapContainsValueTester<K, V> extends AbstractMapTester<K, V> {
40   @CollectionSize.Require(absent = ZERO)
41   public void testContains_yes() {
42     assertTrue("containsValue(present) should return true", getMap().containsValue(v0()));
43   }
44 
45   public void testContains_no() {
46     assertFalse("containsValue(notPresent) should return false", getMap().containsValue(v3()));
47   }
48 
49   @MapFeature.Require(ALLOWS_NULL_VALUE_QUERIES)
50   public void testContains_nullNotContainedButAllowed() {
51     assertFalse("containsValue(null) should return false", getMap().containsValue(null));
52   }
53 
54   @MapFeature.Require(absent = ALLOWS_NULL_VALUE_QUERIES)
55   public void testContains_nullNotContainedAndUnsupported() {
56     expectNullValueMissingWhenNullValuesUnsupported(
57         "containsValue(null) should return false or throw");
58   }
59 
60   @MapFeature.Require(ALLOWS_NULL_VALUES)
61   @CollectionSize.Require(absent = ZERO)
62   public void testContains_nonNullWhenNullContained() {
63     initMapWithNullValue();
64     assertFalse("containsValue(notPresent) should return false", getMap().containsValue(v3()));
65   }
66 
67   @MapFeature.Require(ALLOWS_NULL_VALUES)
68   @CollectionSize.Require(absent = ZERO)
69   public void testContains_nullContained() {
70     initMapWithNullValue();
71     assertTrue("containsValue(null) should return true", getMap().containsValue(null));
72   }
73 
74   public void testContains_wrongType() {
75     try {
76       // noinspection SuspiciousMethodCalls
77       assertFalse(
78           "containsValue(wrongType) should return false or throw",
79           getMap().containsValue(WrongType.VALUE));
80     } catch (ClassCastException tolerated) {
81     }
82   }
83 }