Coverage Summary for Class: ListRemoveTester (com.google.common.collect.testing.testers)

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.SUPPORTS_REMOVE;
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 import org.junit.Ignore;
27 
28 /**
29  * A generic JUnit test which tests {@code remove(Object)} operations on a list. Can't be invoked
30  * directly; please see {@link com.google.common.collect.testing.ListTestSuiteBuilder}.
31  *
32  * @author George van den Driessche
33  */
34 @GwtCompatible
35 @Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.
36 public class ListRemoveTester<E> extends AbstractListTester<E> {
37   @CollectionFeature.Require(SUPPORTS_REMOVE)
38   @CollectionSize.Require(absent = {ZERO, ONE})
39   public void testRemove_duplicate() {
40     ArrayWithDuplicate<E> arrayAndDuplicate = createArrayWithDuplicateElement();
41     collection = getSubjectGenerator().create(arrayAndDuplicate.elements);
42     E duplicate = arrayAndDuplicate.duplicate;
43 
44     int firstIndex = getList().indexOf(duplicate);
45     int initialSize = getList().size();
46     assertTrue("remove(present) should return true", getList().remove(duplicate));
47     assertTrue(
48         "After remove(duplicate), a list should still contain the duplicate element",
49         getList().contains(duplicate));
50     assertFalse(
51         "remove(duplicate) should remove the first instance of the "
52             + "duplicate element in the list",
53         firstIndex == getList().indexOf(duplicate));
54     assertEquals(
55         "remove(present) should decrease the size of a list by one.",
56         initialSize - 1,
57         getList().size());
58   }
59 }