Coverage Summary for Class: ListAddAllAtIndexTester (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.CollectionSize.ONE;
21 import static com.google.common.collect.testing.features.CollectionSize.ZERO;
22 import static com.google.common.collect.testing.features.ListFeature.SUPPORTS_ADD_WITH_INDEX;
23 import static java.util.Collections.singletonList;
24 
25 import com.google.common.annotations.GwtCompatible;
26 import com.google.common.collect.testing.MinimalCollection;
27 import com.google.common.collect.testing.features.CollectionFeature;
28 import com.google.common.collect.testing.features.CollectionSize;
29 import com.google.common.collect.testing.features.ListFeature;
30 import java.util.List;
31 import org.junit.Ignore;
32 
33 /**
34  * A generic JUnit test which tests {@code addAll(int, Collection)} operations on a list. Can't be
35  * invoked directly; please see {@link com.google.common.collect.testing.ListTestSuiteBuilder}.
36  *
37  * @author Chris Povirk
38  */
39 @SuppressWarnings("unchecked") // too many "unchecked generic array creations"
40 @GwtCompatible
41 @Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.
42 public class ListAddAllAtIndexTester<E> extends AbstractListTester<E> {
43   @ListFeature.Require(SUPPORTS_ADD_WITH_INDEX)
44   @CollectionSize.Require(absent = ZERO)
45   public void testAddAllAtIndex_supportedAllPresent() {
46     assertTrue(
47         "addAll(n, allPresent) should return true",
48         getList().addAll(0, MinimalCollection.of(e0())));
49     expectAdded(0, e0());
50   }
51 
52   @ListFeature.Require(absent = SUPPORTS_ADD_WITH_INDEX)
53   @CollectionSize.Require(absent = ZERO)
54   public void testAddAllAtIndex_unsupportedAllPresent() {
55     try {
56       getList().addAll(0, MinimalCollection.of(e0()));
57       fail("addAll(n, allPresent) should throw");
58     } catch (UnsupportedOperationException expected) {
59     }
60     expectUnchanged();
61   }
62 
63   @ListFeature.Require(SUPPORTS_ADD_WITH_INDEX)
64   @CollectionSize.Require(absent = ZERO)
65   public void testAddAllAtIndex_supportedSomePresent() {
66     assertTrue(
67         "addAll(n, allPresent) should return true",
68         getList().addAll(0, MinimalCollection.of(e0(), e3())));
69     expectAdded(0, e0(), e3());
70   }
71 
72   @ListFeature.Require(absent = SUPPORTS_ADD_WITH_INDEX)
73   @CollectionSize.Require(absent = ZERO)
74   public void testAddAllAtIndex_unsupportedSomePresent() {
75     try {
76       getList().addAll(0, MinimalCollection.of(e0(), e3()));
77       fail("addAll(n, allPresent) should throw");
78     } catch (UnsupportedOperationException expected) {
79     }
80     expectUnchanged();
81     expectMissing(e3());
82   }
83 
84   @ListFeature.Require(SUPPORTS_ADD_WITH_INDEX)
85   public void testAddAllAtIndex_supportedNothing() {
86     assertFalse("addAll(n, nothing) should return false", getList().addAll(0, emptyCollection()));
87     expectUnchanged();
88   }
89 
90   @ListFeature.Require(absent = SUPPORTS_ADD_WITH_INDEX)
91   public void testAddAllAtIndex_unsupportedNothing() {
92     try {
93       assertFalse(
94           "addAll(n, nothing) should return false or throw",
95           getList().addAll(0, emptyCollection()));
96     } catch (UnsupportedOperationException tolerated) {
97     }
98     expectUnchanged();
99   }
100 
101   @ListFeature.Require(SUPPORTS_ADD_WITH_INDEX)
102   public void testAddAllAtIndex_withDuplicates() {
103     MinimalCollection<E> elementsToAdd = MinimalCollection.of(e0(), e1(), e0(), e1());
104     assertTrue("addAll(n, hasDuplicates) should return true", getList().addAll(0, elementsToAdd));
105     expectAdded(0, e0(), e1(), e0(), e1());
106   }
107 
108   @ListFeature.Require(SUPPORTS_ADD_WITH_INDEX)
109   @CollectionFeature.Require(ALLOWS_NULL_VALUES)
110   public void testAddAllAtIndex_nullSupported() {
111     List<E> containsNull = singletonList(null);
112     assertTrue("addAll(n, containsNull) should return true", getList().addAll(0, containsNull));
113     /*
114      * We need (E) to force interpretation of null as the single element of a
115      * varargs array, not the array itself
116      */
117     expectAdded(0, (E) null);
118   }
119 
120   @ListFeature.Require(SUPPORTS_ADD_WITH_INDEX)
121   @CollectionFeature.Require(absent = ALLOWS_NULL_VALUES)
122   public void testAddAllAtIndex_nullUnsupported() {
123     List<E> containsNull = singletonList(null);
124     try {
125       getList().addAll(0, containsNull);
126       fail("addAll(n, containsNull) should throw");
127     } catch (NullPointerException expected) {
128     }
129     expectUnchanged();
130     expectNullMissingWhenNullUnsupported(
131         "Should not contain null after unsupported addAll(n, containsNull)");
132   }
133 
134   @ListFeature.Require(SUPPORTS_ADD_WITH_INDEX)
135   @CollectionSize.Require(absent = {ZERO, ONE})
136   public void testAddAllAtIndex_middle() {
137     assertTrue(
138         "addAll(middle, disjoint) should return true",
139         getList().addAll(getNumElements() / 2, createDisjointCollection()));
140     expectAdded(getNumElements() / 2, createDisjointCollection());
141   }
142 
143   @ListFeature.Require(SUPPORTS_ADD_WITH_INDEX)
144   @CollectionSize.Require(absent = ZERO)
145   public void testAddAllAtIndex_end() {
146     assertTrue(
147         "addAll(end, disjoint) should return true",
148         getList().addAll(getNumElements(), createDisjointCollection()));
149     expectAdded(getNumElements(), createDisjointCollection());
150   }
151 
152   @ListFeature.Require(SUPPORTS_ADD_WITH_INDEX)
153   public void testAddAllAtIndex_nullCollectionReference() {
154     try {
155       getList().addAll(0, null);
156       fail("addAll(n, null) should throw");
157     } catch (NullPointerException expected) {
158     }
159     expectUnchanged();
160   }
161 
162   @ListFeature.Require(SUPPORTS_ADD_WITH_INDEX)
163   public void testAddAllAtIndex_negative() {
164     try {
165       getList().addAll(-1, MinimalCollection.of(e3()));
166       fail("addAll(-1, e) should throw");
167     } catch (IndexOutOfBoundsException expected) {
168     }
169     expectUnchanged();
170     expectMissing(e3());
171   }
172 
173   @ListFeature.Require(SUPPORTS_ADD_WITH_INDEX)
174   public void testAddAllAtIndex_tooLarge() {
175     try {
176       getList().addAll(getNumElements() + 1, MinimalCollection.of(e3()));
177       fail("addAll(size + 1, e) should throw");
178     } catch (IndexOutOfBoundsException expected) {
179     }
180     expectUnchanged();
181     expectMissing(e3());
182   }
183 }