Coverage Summary for Class: ConcurrentMapReplaceEntryTester (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_VALUES;
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_PUT;
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  * A generic JUnit test which tests {@code replace(K, V, V)} operations on a concurrent map. Can't
33  * be invoked directly; please see {@link
34  * com.google.common.collect.testing.ConcurrentMapTestSuiteBuilder}.
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 ConcurrentMapReplaceEntryTester<K, V> extends AbstractMapTester<K, V> {
41   @Override
42   protected ConcurrentMap<K, V> getMap() {
43     return (ConcurrentMap<K, V>) super.getMap();
44   }
45 
46   @MapFeature.Require(SUPPORTS_PUT)
47   @CollectionSize.Require(absent = ZERO)
48   public void testReplaceEntry_supportedPresent() {
49     assertTrue(getMap().replace(k0(), v0(), v3()));
50     expectReplacement(entry(k0(), v3()));
51   }
52 
53   @MapFeature.Require(SUPPORTS_PUT)
54   @CollectionSize.Require(absent = ZERO)
55   public void testReplaceEntry_supportedPresentUnchanged() {
56     assertTrue(getMap().replace(k0(), v0(), v0()));
57     expectUnchanged();
58   }
59 
60   @MapFeature.Require(SUPPORTS_PUT)
61   @CollectionSize.Require(absent = ZERO)
62   public void testReplaceEntry_supportedWrongValue() {
63     assertFalse(getMap().replace(k0(), v3(), v4()));
64     expectUnchanged();
65   }
66 
67   @MapFeature.Require(SUPPORTS_PUT)
68   public void testReplaceEntry_supportedAbsentKey() {
69     assertFalse(getMap().replace(k3(), v3(), v4()));
70     expectUnchanged();
71   }
72 
73   @MapFeature.Require(value = SUPPORTS_PUT, absent = ALLOWS_NULL_VALUES)
74   @CollectionSize.Require(absent = ZERO)
75   public void testReplaceEntry_presentNullValueUnsupported() {
76     try {
77       getMap().replace(k0(), v0(), null);
78       fail("Expected NullPointerException");
79     } catch (NullPointerException expected) {
80     }
81     expectUnchanged();
82   }
83 
84   @MapFeature.Require(value = SUPPORTS_PUT, absent = ALLOWS_NULL_VALUE_QUERIES)
85   @CollectionSize.Require(absent = ZERO)
86   public void testReplaceEntry_wrongValueNullValueUnsupported() {
87     try {
88       assertFalse(getMap().replace(k0(), v3(), null));
89     } catch (NullPointerException tolerated) {
90       // the operation would be a no-op, so exceptions are allowed but not required
91     }
92     expectUnchanged();
93   }
94 
95   @MapFeature.Require(value = SUPPORTS_PUT, absent = ALLOWS_NULL_VALUE_QUERIES)
96   public void testReplaceEntry_absentKeyNullValueUnsupported() {
97     try {
98       assertFalse(getMap().replace(k3(), v3(), null));
99     } catch (NullPointerException tolerated) {
100       // the operation would be a no-op, so exceptions are allowed but not required
101     }
102     expectUnchanged();
103   }
104 
105   @MapFeature.Require({SUPPORTS_PUT, ALLOWS_NULL_VALUE_QUERIES})
106   public void testReplaceEntry_nullDifferentFromAbsent() {
107     assertFalse(getMap().replace(k3(), null, v3()));
108     expectUnchanged();
109   }
110 
111   @MapFeature.Require(value = SUPPORTS_PUT, absent = ALLOWS_NULL_VALUE_QUERIES)
112   public void testReplaceEntry_expectNullUnsupported() {
113     try {
114       assertFalse(getMap().replace(k3(), null, v3()));
115     } catch (NullPointerException tolerated) {
116       // the operation would be a no-op, so exceptions are allowed but not required
117     }
118     expectUnchanged();
119   }
120 
121   @MapFeature.Require(absent = SUPPORTS_PUT)
122   @CollectionSize.Require(absent = ZERO)
123   public void testReplaceEntry_unsupportedPresent() {
124     try {
125       getMap().replace(k0(), v0(), v3());
126       fail("Expected UnsupportedOperationException");
127     } catch (UnsupportedOperationException expected) {
128     }
129     expectUnchanged();
130   }
131 
132   @MapFeature.Require(absent = SUPPORTS_PUT)
133   @CollectionSize.Require(absent = ZERO)
134   public void testReplaceEntry_unsupportedWrongValue() {
135     try {
136       getMap().replace(k0(), v3(), v4());
137     } catch (UnsupportedOperationException tolerated) {
138       // the operation would be a no-op, so exceptions are allowed but not required
139     }
140     expectUnchanged();
141   }
142 
143   @MapFeature.Require(absent = SUPPORTS_PUT)
144   public void testReplaceEntry_unsupportedAbsentKey() {
145     try {
146       getMap().replace(k3(), v3(), v4());
147     } catch (UnsupportedOperationException tolerated) {
148       // the operation would be a no-op, so exceptions are allowed but not required
149     }
150     expectUnchanged();
151   }
152 }