ListLastIndexOfTester.java revision 3c77433663281544363151bf284b0240dfd22a42 
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.REJECTS_DUPLICATES_AT_CREATION;
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.annotations.GwtCompatible;
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 {@code lastIndexOf()} operations on a list.
29 * Can't be invoked directly; please see
30 * {@link com.google.common.collect.testing.ListTestSuiteBuilder}.
31 *
32 * <p>This class is GWT compatible.
33 *
34 * @author Chris Povirk
35 */
36@GwtCompatible
37public class ListLastIndexOfTester<E> extends AbstractListIndexOfTester<E> {
38  @Override protected int find(Object o) {
39    return getList().lastIndexOf(o);
40  }
41
42  @Override protected String getMethodName() {
43    return "lastIndexOf";
44  }
45
46  @CollectionFeature.Require(absent = REJECTS_DUPLICATES_AT_CREATION)
47  @CollectionSize.Require(absent = {ZERO, ONE})
48  public void testLastIndexOf_duplicate() {
49    E[] array = createSamplesArray();
50    array[getNumElements() / 2] = samples.e0;
51    collection = getSubjectGenerator().create(array);
52    assertEquals(
53        "lastIndexOf(duplicate) should return index of last occurrence",
54        getNumElements() / 2, getList().lastIndexOf(samples.e0));
55  }
56}
57