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

1 /*
2  * Copyright (C) 2007 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.CollectionFeature.ALLOWS_NULL_QUERIES;
20 import static com.google.common.collect.testing.features.CollectionFeature.ALLOWS_NULL_VALUES;
21 import static com.google.common.collect.testing.features.CollectionSize.ZERO;
22 
23 import com.google.common.annotations.GwtCompatible;
24 import com.google.common.collect.testing.AbstractCollectionTester;
25 import com.google.common.collect.testing.WrongType;
26 import com.google.common.collect.testing.features.CollectionFeature;
27 import com.google.common.collect.testing.features.CollectionSize;
28 import org.junit.Ignore;
29 
30 /**
31  * A generic JUnit test which tests {@code contains()} operations on a collection. Can't be invoked
32  * directly; please see {@link com.google.common.collect.testing.CollectionTestSuiteBuilder}.
33  *
34  * @author Kevin Bourrillion
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 CollectionContainsTester<E> extends AbstractCollectionTester<E> {
40   @CollectionSize.Require(absent = ZERO)
41   public void testContains_yes() {
42     assertTrue("contains(present) should return true", collection.contains(e0()));
43   }
44 
45   public void testContains_no() {
46     assertFalse("contains(notPresent) should return false", collection.contains(e3()));
47   }
48 
49   @CollectionFeature.Require(ALLOWS_NULL_QUERIES)
50   public void testContains_nullNotContainedButQueriesSupported() {
51     assertFalse("contains(null) should return false", collection.contains(null));
52   }
53 
54   @CollectionFeature.Require(absent = ALLOWS_NULL_QUERIES)
55   public void testContains_nullNotContainedAndUnsupported() {
56     expectNullMissingWhenNullUnsupported("contains(null) should return false or throw");
57   }
58 
59   @CollectionFeature.Require(ALLOWS_NULL_VALUES)
60   @CollectionSize.Require(absent = ZERO)
61   public void testContains_nonNullWhenNullContained() {
62     initCollectionWithNullElement();
63     assertFalse("contains(notPresent) should return false", collection.contains(e3()));
64   }
65 
66   @CollectionFeature.Require(ALLOWS_NULL_VALUES)
67   @CollectionSize.Require(absent = ZERO)
68   public void testContains_nullContained() {
69     initCollectionWithNullElement();
70     assertTrue("contains(null) should return true", collection.contains(null));
71   }
72 
73   public void testContains_wrongType() {
74     try {
75       assertFalse(
76           "contains(wrongType) should return false or throw", collection.contains(WrongType.VALUE));
77     } catch (ClassCastException tolerated) {
78     }
79   }
80 }