guava
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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
17package com.google.common.collect.testing.testers;
18
19import static com.google.common.collect.testing.features.CollectionSize.ZERO;
20import static com.google.common.collect.testing.features.MapFeature.ALLOWS_NULL_VALUES;
21import static com.google.common.collect.testing.features.MapFeature.ALLOWS_NULL_VALUE_QUERIES;
22
23import com.google.common.annotations.GwtCompatible;
24import com.google.common.collect.testing.AbstractMapTester;
25import com.google.common.collect.testing.WrongType;
26import com.google.common.collect.testing.features.CollectionSize;
27import com.google.common.collect.testing.features.MapFeature;
28import org.junit.Ignore;
29
30/**
31* A generic JUnit test which tests {@code containsValue()} operations on a map. Can't be invoked
32* directly; please see {@link com.google.common.collect.testing.MapTestSuiteBuilder}.
33*
34* @author George van den Driessche
35* @author Chris Povirk
36*/
37@GwtCompatible
38@Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.
39public class MapContainsValueTester<K, V> extends AbstractMapTester<K, V> {
40@CollectionSize.Require(absent = ZERO)
41public void testContains_yes() {
42assertTrue("containsValue(present) should return true", getMap().containsValue(v0()));
43}
44
45public void testContains_no() {
46assertFalse("containsValue(notPresent) should return false", getMap().containsValue(v3()));
47}
48
49@MapFeature.Require(ALLOWS_NULL_VALUE_QUERIES)
50public void testContains_nullNotContainedButAllowed() {
51assertFalse("containsValue(null) should return false", getMap().containsValue(null));
52}
53
54@MapFeature.Require(absent = ALLOWS_NULL_VALUE_QUERIES)
55public void testContains_nullNotContainedAndUnsupported() {
56expectNullValueMissingWhenNullValuesUnsupported(
57"containsValue(null) should return false or throw");
58}
59
60@MapFeature.Require(ALLOWS_NULL_VALUES)
61@CollectionSize.Require(absent = ZERO)
62public void testContains_nonNullWhenNullContained() {
63initMapWithNullValue();
64assertFalse("containsValue(notPresent) should return false", getMap().containsValue(v3()));
65}
66
67@MapFeature.Require(ALLOWS_NULL_VALUES)
68@CollectionSize.Require(absent = ZERO)
69public void testContains_nullContained() {
70initMapWithNullValue();
71assertTrue("containsValue(null) should return true", getMap().containsValue(null));
72}
73
74public void testContains_wrongType() {
75try {
76// noinspection SuspiciousMethodCalls
77assertFalse(
78"containsValue(wrongType) should return false or throw",
79getMap().containsValue(WrongType.VALUE));
80} catch (ClassCastException tolerated) {
81}
82}
83}
84