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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)
39    public void testAddAll_supportedAllPresent() {
40      assertTrue(
41          "addAll(allPresent) should return true", getList().addAll(MinimalCollection.of(e0())));
42      expectAdded(e0());
43    }
44  
45    @CollectionFeature.Require(absent = SUPPORTS_ADD)
46    @CollectionSize.Require(absent = ZERO)
47    public void testAddAll_unsupportedAllPresent() {
48      try {
49        getList().addAll(MinimalCollection.of(e0()));
50        fail("addAll(allPresent) should throw");
51      } catch (UnsupportedOperationException expected) {
52      }
53      expectUnchanged();
54    }
55  
56    @CollectionFeature.Require(SUPPORTS_ADD)
57    public void testAddAll_withDuplicates() {
58      MinimalCollection<E> elementsToAdd = MinimalCollection.of(e0(), e1(), e0(), e1());
59      assertTrue("addAll(hasDuplicates) should return true", getList().addAll(elementsToAdd));
60      expectAdded(e0(), e1(), e0(), e1());
61    }
62  }