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

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.ALLOWS_NULL_VALUES;
20 import static com.google.common.collect.testing.features.CollectionFeature.SUPPORTS_ADD;
21 import static com.google.common.collect.testing.features.CollectionSize.ZERO;
22 
23 import com.google.common.annotations.GwtCompatible;
24 import com.google.common.annotations.GwtIncompatible;
25 import com.google.common.collect.testing.Helpers;
26 import com.google.common.collect.testing.features.CollectionFeature;
27 import com.google.common.collect.testing.features.CollectionSize;
28 import java.lang.reflect.Method;
29 import org.junit.Ignore;
30 
31 /**
32  * A generic JUnit test which tests add operations on a set. Can't be invoked directly; please see
33  * {@link com.google.common.collect.testing.SetTestSuiteBuilder}.
34  *
35  * @author Kevin Bourrillion
36  */
37 @GwtCompatible(emulated = true)
38 @Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.
39 public class SetAddTester<E> extends AbstractSetTester<E> {
40   @CollectionFeature.Require(SUPPORTS_ADD)
41   @CollectionSize.Require(absent = ZERO)
42   public void testAdd_supportedPresent() {
43     assertFalse("add(present) should return false", getSet().add(e0()));
44     expectUnchanged();
45   }
46 
47   @CollectionFeature.Require(value = {SUPPORTS_ADD, ALLOWS_NULL_VALUES})
48   @CollectionSize.Require(absent = ZERO)
49   public void testAdd_supportedNullPresent() {
50     E[] array = createArrayWithNullElement();
51     collection = getSubjectGenerator().create(array);
52     assertFalse("add(nullPresent) should return false", getSet().add(null));
53     expectContents(array);
54   }
55 
56   /**
57    * Returns the {@link Method} instance for {@link #testAdd_supportedNullPresent()} so that tests
58    * can suppress it. See {@link CollectionAddTester#getAddNullSupportedMethod()} for details.
59    */
60   @GwtIncompatible // reflection
61   public static Method getAddSupportedNullPresentMethod() {
62     return Helpers.getMethod(SetAddTester.class, "testAdd_supportedNullPresent");
63   }
64 }