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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  
17  package com.google.common.collect.testing.testers;
18  
19  import static com.google.common.collect.testing.features.CollectionFeature.REJECTS_DUPLICATES_AT_CREATION;
20  import static com.google.common.collect.testing.features.CollectionSize.ONE;
21  import static com.google.common.collect.testing.features.CollectionSize.ZERO;
22  
23  import com.google.common.annotations.GwtCompatible;
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 indexOf()} operations on a list.
29   * Can't be invoked directly; please see
30   * {@link com.google.common.collect.testing.ListTestSuiteBuilder}.
31   *
32   * @author Chris Povirk
33   */
34  @GwtCompatible
35  public class ListIndexOfTester<E> extends AbstractListIndexOfTester<E> {
36    @Override
37    protected int find(Object o) {
38      return getList().indexOf(o);
39    }
40  
41    @Override
42    protected String getMethodName() {
43      return "indexOf";
44    }
45  
46    @CollectionFeature.Require(absent = REJECTS_DUPLICATES_AT_CREATION)
47    @CollectionSize.Require(absent = {ZERO, ONE})
48    public void testIndexOf_duplicate() {
49      E[] array = createSamplesArray();
50      array[getNumElements() / 2] = e0();
51      collection = getSubjectGenerator().create(array);
52      assertEquals(
53          "indexOf(duplicate) should return index of first occurrence", 0, getList().indexOf(e0()));
54    }
55  }