MultimapContainsValueTester.java revision 3c77433663281544363151bf284b0240dfd22a42 
1/*
2 * Copyright (C) 2012 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.google;
18
19import static com.google.common.collect.testing.features.CollectionSize.ZERO;
20import static com.google.common.collect.testing.features.MapFeature.ALLOWS_NULL_QUERIES;
21import static com.google.common.collect.testing.features.MapFeature.ALLOWS_NULL_VALUES;
22
23import com.google.common.annotations.GwtCompatible;
24import com.google.common.collect.Multimap;
25import com.google.common.collect.testing.features.CollectionSize;
26import com.google.common.collect.testing.features.MapFeature;
27
28/**
29 * Tester for {@link Multimap#containsValue}.
30 *
31 * @author Louis Wasserman
32 */
33@GwtCompatible
34public class MultimapContainsValueTester<K, V>
35    extends AbstractMultimapTester<K, V, Multimap<K, V>> {
36  @CollectionSize.Require(absent = ZERO)
37  public void testContainsValueYes() {
38    assertTrue(multimap().containsValue(sampleValues().e0));
39  }
40
41  public void testContainsValueNo() {
42    assertFalse(multimap().containsValue(sampleValues().e3));
43  }
44
45  @MapFeature.Require(ALLOWS_NULL_VALUES)
46  @CollectionSize.Require(absent = ZERO)
47  public void testContainsNullValueYes() {
48    initMultimapWithNullValue();
49    assertTrue(multimap().containsValue(null));
50  }
51
52  @MapFeature.Require(ALLOWS_NULL_QUERIES)
53  public void testContainsNullValueNo() {
54    assertFalse(multimap().containsValue(null));
55  }
56
57  @MapFeature.Require(absent = ALLOWS_NULL_QUERIES)
58  public void testContainsNullValueFails() {
59    try {
60      multimap().containsValue(null);
61      fail("Expected NullPointerException");
62    } catch (NullPointerException expected) {
63      // success
64    }
65  }
66}
67