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.SUPPORTS_ADD;
20 import static com.google.common.collect.testing.features.CollectionSize.ZERO;
21 
22 import com.google.common.annotations.GwtCompatible;
23 import com.google.common.collect.testing.MinimalCollection;
24 import com.google.common.collect.testing.features.CollectionFeature;
25 import com.google.common.collect.testing.features.CollectionSize;
26 
27 /**
28  * A generic JUnit test which tests {@code addAll(Collection)} operations on a
29  * list. Can't be invoked directly; please see
30  * {@link com.google.common.collect.testing.ListTestSuiteBuilder}.
31  *
32  * @author Chris Povirk
33  */
34 @SuppressWarnings("unchecked") // too many "unchecked generic array creations"
35 @GwtCompatible
36 public class ListAddAllTester<E> extends AbstractListTester<E> {
37   @CollectionFeature.Require(SUPPORTS_ADD)
38   @CollectionSize.Require(absent = ZERO)
testAddAll_supportedAllPresent()39   public void testAddAll_supportedAllPresent() {
40     assertTrue("addAll(allPresent) should return true",
41         getList().addAll(MinimalCollection.of(samples.e0)));
42     expectAdded(samples.e0);
43   }
44 
45   @CollectionFeature.Require(absent = SUPPORTS_ADD)
46   @CollectionSize.Require(absent = ZERO)
testAddAll_unsupportedAllPresent()47   public void testAddAll_unsupportedAllPresent() {
48     try {
49       getList().addAll(MinimalCollection.of(samples.e0));
50       fail("addAll(allPresent) should throw");
51     } catch (UnsupportedOperationException expected) {
52     }
53     expectUnchanged();
54   }
55 
56   @CollectionFeature.Require(SUPPORTS_ADD)
testAddAll_withDuplicates()57   public void testAddAll_withDuplicates() {
58     MinimalCollection<E> elementsToAdd
59         = MinimalCollection.of(samples.e0, samples.e1, samples.e0, samples.e1);
60     assertTrue("addAll(hasDuplicates) should return true",
61         getList().addAll(elementsToAdd));
62     expectAdded(samples.e0, samples.e1, samples.e0, samples.e1);
63   }
64 }
65