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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 addAll operations on a set. Can't be
29   * invoked directly; please see
30   * {@link com.google.common.collect.testing.SetTestSuiteBuilder}.
31   *
32   * @author Kevin Bourrillion
33   */
34  @SuppressWarnings("unchecked") // too many "unchecked generic array creations"
35  @GwtCompatible
36  public class SetAddAllTester<E> extends AbstractSetTester<E> {
37    @CollectionFeature.Require(SUPPORTS_ADD)
38    @CollectionSize.Require(absent = ZERO)
39    public void testAddAll_supportedSomePresent() {
40      assertTrue(
41          "add(somePresent) should return true", getSet().addAll(MinimalCollection.of(e3(), e0())));
42      expectAdded(e3());
43    }
44  
45    @CollectionFeature.Require(SUPPORTS_ADD)
46    public void testAddAll_withDuplicates() {
47      MinimalCollection<E> elementsToAdd = MinimalCollection.of(e3(), e4(), e3(), e4());
48      assertTrue("add(hasDuplicates) should return true", getSet().addAll(elementsToAdd));
49      expectAdded(e3(), e4());
50    }
51  
52    @CollectionFeature.Require(SUPPORTS_ADD)
53    @CollectionSize.Require(absent = ZERO)
54    public void testAddAll_supportedAllPresent() {
55      assertFalse("add(allPresent) should return false", getSet().addAll(MinimalCollection.of(e0())));
56      expectUnchanged();
57    }
58  }