Coverage Summary for Class: SetCreationTester (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.CollectionFeature.ALLOWS_NULL_VALUES;
20 import static com.google.common.collect.testing.features.CollectionFeature.REJECTS_DUPLICATES_AT_CREATION;
21 import static com.google.common.collect.testing.features.CollectionSize.ONE;
22 import static com.google.common.collect.testing.features.CollectionSize.ZERO;
23 
24 import com.google.common.annotations.GwtCompatible;
25 import com.google.common.collect.testing.features.CollectionFeature;
26 import com.google.common.collect.testing.features.CollectionSize;
27 import java.util.Arrays;
28 import java.util.List;
29 import org.junit.Ignore;
30 
31 /**
32  * A generic JUnit test which tests creation (typically through a constructor or static factory
33  * method) of a set. Can't be invoked directly; please see {@link
34  * com.google.common.collect.testing.SetTestSuiteBuilder}.
35  *
36  * @author Chris Povirk
37  */
38 @GwtCompatible
39 @Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.
40 public class SetCreationTester<E> extends AbstractSetTester<E> {
41   @CollectionFeature.Require(value = ALLOWS_NULL_VALUES, absent = REJECTS_DUPLICATES_AT_CREATION)
42   @CollectionSize.Require(absent = {ZERO, ONE})
43   public void testCreateWithDuplicates_nullDuplicatesNotRejected() {
44     E[] array = createArrayWithNullElement();
45     array[0] = null;
46     collection = getSubjectGenerator().create(array);
47 
48     List<E> expectedWithDuplicateRemoved = Arrays.asList(array).subList(1, getNumElements());
49     expectContents(expectedWithDuplicateRemoved);
50   }
51 
52   @CollectionFeature.Require(absent = REJECTS_DUPLICATES_AT_CREATION)
53   @CollectionSize.Require(absent = {ZERO, ONE})
54   public void testCreateWithDuplicates_nonNullDuplicatesNotRejected() {
55     E[] array = createSamplesArray();
56     array[1] = e0();
57     collection = getSubjectGenerator().create(array);
58 
59     List<E> expectedWithDuplicateRemoved = Arrays.asList(array).subList(1, getNumElements());
60     expectContents(expectedWithDuplicateRemoved);
61   }
62 
63   @CollectionFeature.Require({ALLOWS_NULL_VALUES, REJECTS_DUPLICATES_AT_CREATION})
64   @CollectionSize.Require(absent = {ZERO, ONE})
65   public void testCreateWithDuplicates_nullDuplicatesRejected() {
66     E[] array = createArrayWithNullElement();
67     array[0] = null;
68     try {
69       collection = getSubjectGenerator().create(array);
70       fail("Should reject duplicate null elements at creation");
71     } catch (IllegalArgumentException expected) {
72     }
73   }
74 
75   @CollectionFeature.Require(REJECTS_DUPLICATES_AT_CREATION)
76   @CollectionSize.Require(absent = {ZERO, ONE})
77   public void testCreateWithDuplicates_nonNullDuplicatesRejected() {
78     E[] array = createSamplesArray();
79     array[1] = e0();
80     try {
81       collection = getSubjectGenerator().create(array);
82       fail("Should reject duplicate non-null elements at creation");
83     } catch (IllegalArgumentException expected) {
84     }
85   }
86 }