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
17package com.google.common.collect.testing.testers;
18
19import static com.google.common.collect.testing.features.CollectionFeature.SUPPORTS_REMOVE_ALL;
20import static com.google.common.collect.testing.features.CollectionSize.ONE;
21import static com.google.common.collect.testing.features.CollectionSize.ZERO;
22
23import com.google.common.collect.testing.MinimalCollection;
24import com.google.common.collect.testing.features.CollectionFeature;
25import com.google.common.collect.testing.features.CollectionSize;
26
27/**
28 * A generic JUnit test which tests removeAll operations on a list. Can't be
29 * invoked directly; please see
30 * {@link com.google.common.collect.testing.ListTestSuiteBuilder}.
31 *
32 * <p>This class is GWT compatible.
33 *
34 * @author George van den Driessche
35 */
36@SuppressWarnings("unchecked") // too many "unchecked generic array creations"
37public class ListRemoveAllTester<E> extends AbstractListTester<E> {
38  @CollectionFeature.Require(SUPPORTS_REMOVE_ALL)
39  @CollectionSize.Require(absent = {ZERO, ONE})
40  public void testRemoveAll_duplicate() {
41    ArrayWithDuplicate<E> arrayAndDuplicate = createArrayWithDuplicateElement();
42    collection = getSubjectGenerator().create(arrayAndDuplicate.elements);
43    E duplicate = arrayAndDuplicate.duplicate;
44
45    assertTrue("removeAll(intersectingCollection) should return true",
46        getList().removeAll(MinimalCollection.of(duplicate)));
47    assertFalse("after removeAll(e), a collection should not contain e even " +
48        "if it initially contained e more than once.",
49        getList().contains(duplicate));
50  }
51
52  // All other cases are covered by CollectionRemoveAllTester.
53}
54