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

1 /*
2  * Copyright (C) 2015 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_KEY_QUERIES;
21 import static com.google.common.collect.testing.features.MapFeature.ALLOWS_NULL_VALUE_QUERIES;
22 import static com.google.common.collect.testing.features.MapFeature.SUPPORTS_REMOVE;
23 
24 import com.google.common.annotations.GwtCompatible;
25 import com.google.common.collect.testing.AbstractMapTester;
26 import com.google.common.collect.testing.features.CollectionSize;
27 import com.google.common.collect.testing.features.MapFeature;
28 import java.util.concurrent.ConcurrentMap;
29 import org.junit.Ignore;
30 
31 /**
32  * Tester for {@link ConcurrentMap#remove}. Can't be invoked directly; please see {@link
33  * com.google.common.collect.testing.ConcurrentMapTestSuiteBuilder}.
34  *
35  * @author Louis Wasserman
36  */
37 @GwtCompatible
38 @Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.
39 public class ConcurrentMapRemoveTester<K, V> extends AbstractMapTester<K, V> {
40   @Override
41   protected ConcurrentMap<K, V> getMap() {
42     return (ConcurrentMap<K, V>) super.getMap();
43   }
44 
45   @MapFeature.Require(SUPPORTS_REMOVE)
46   @CollectionSize.Require(absent = ZERO)
47   public void testRemove_supportedPresent() {
48     assertTrue(getMap().remove(k0(), v0()));
49     expectMissing(e0());
50   }
51 
52   @MapFeature.Require(SUPPORTS_REMOVE)
53   public void testRemove_supportedPresentKeyWrongValue() {
54     assertFalse(getMap().remove(k0(), v3()));
55     expectUnchanged();
56   }
57 
58   @MapFeature.Require(SUPPORTS_REMOVE)
59   public void testRemove_supportedWrongKeyPresentValue() {
60     assertFalse(getMap().remove(k3(), v0()));
61     expectUnchanged();
62   }
63 
64   @MapFeature.Require(SUPPORTS_REMOVE)
65   public void testRemove_supportedAbsentKeyAbsentValue() {
66     assertFalse(getMap().remove(k3(), v3()));
67     expectUnchanged();
68   }
69 
70   @MapFeature.Require(value = SUPPORTS_REMOVE, absent = ALLOWS_NULL_KEY_QUERIES)
71   public void testRemove_nullKeyQueriesUnsupported() {
72     try {
73       assertFalse(getMap().remove(null, v3()));
74     } catch (NullPointerException tolerated) {
75       // since the operation would be a no-op, the exception is not required
76     }
77     expectUnchanged();
78   }
79 
80   @MapFeature.Require(value = SUPPORTS_REMOVE, absent = ALLOWS_NULL_VALUE_QUERIES)
81   public void testRemove_nullValueQueriesUnsupported() {
82     try {
83       assertFalse(getMap().remove(k3(), null));
84     } catch (NullPointerException tolerated) {
85       // since the operation would be a no-op, the exception is not required
86     }
87     expectUnchanged();
88   }
89 
90   @MapFeature.Require(absent = SUPPORTS_REMOVE)
91   @CollectionSize.Require(absent = ZERO)
92   public void testRemove_unsupportedPresent() {
93     try {
94       getMap().remove(k0(), v0());
95       fail("Expected UnsupportedOperationException");
96     } catch (UnsupportedOperationException expected) {
97     }
98     expectUnchanged();
99   }
100 
101   @MapFeature.Require(absent = SUPPORTS_REMOVE)
102   public void testRemove_unsupportedAbsent() {
103     try {
104       assertFalse(getMap().remove(k0(), v3()));
105     } catch (UnsupportedOperationException tolerated) {
106       // since the operation would be a no-op, the exception is not required
107     }
108     expectUnchanged();
109   }
110 }