1 /* 2 * Copyright (C) 2013 The Guava Authors 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except 5 * in compliance with the License. You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software distributed under the License 10 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express 11 * or implied. See the License for the specific language governing permissions and limitations under 12 * the License. 13 */ 14 15 package com.google.common.collect.testing.google; 16 17 import static com.google.common.collect.testing.features.CollectionSize.ZERO; 18 import static com.google.common.collect.testing.features.MapFeature.ALLOWS_NULL_KEYS; 19 import static com.google.common.collect.testing.features.MapFeature.ALLOWS_NULL_VALUES; 20 21 import com.google.common.annotations.GwtCompatible; 22 import com.google.common.collect.Multimap; 23 import com.google.common.collect.testing.Helpers; 24 import com.google.common.collect.testing.features.CollectionSize; 25 import com.google.common.collect.testing.features.MapFeature; 26 import com.google.common.testing.EqualsTester; 27 28 import java.util.ArrayList; 29 import java.util.List; 30 import java.util.Map.Entry; 31 32 /** 33 * Tester for {@code Multimap.equals}. 34 * 35 * @author Louis Wasserman 36 */ 37 @GwtCompatible 38 public class MultimapEqualsTester<K, V> extends AbstractMultimapTester<K, V, Multimap<K, V>> { testEqualsTrue()39 public void testEqualsTrue() { 40 new EqualsTester() 41 .addEqualityGroup(multimap(), getSubjectGenerator().create(getSampleElements().toArray())) 42 .testEquals(); 43 } 44 testEqualsFalse()45 public void testEqualsFalse() { 46 List<Entry<K, V>> targetEntries = new ArrayList<Entry<K, V>>(getSampleElements()); 47 targetEntries.add(Helpers.mapEntry(sampleKeys().e0, sampleValues().e3)); 48 new EqualsTester() 49 .addEqualityGroup(multimap()) 50 .addEqualityGroup(getSubjectGenerator().create(targetEntries.toArray())) 51 .testEquals(); 52 } 53 54 @CollectionSize.Require(absent = ZERO) 55 @MapFeature.Require(ALLOWS_NULL_KEYS) testEqualsMultimapWithNullKey()56 public void testEqualsMultimapWithNullKey() { 57 Multimap<K, V> original = multimap(); 58 initMultimapWithNullKey(); 59 Multimap<K, V> withNull = multimap(); 60 new EqualsTester() 61 .addEqualityGroup(original) 62 .addEqualityGroup(withNull, getSubjectGenerator().create(createArrayWithNullKey())) 63 .testEquals(); 64 } 65 66 @CollectionSize.Require(absent = ZERO) 67 @MapFeature.Require(ALLOWS_NULL_VALUES) testEqualsMultimapWithNullValue()68 public void testEqualsMultimapWithNullValue() { 69 Multimap<K, V> original = multimap(); 70 initMultimapWithNullValue(); 71 Multimap<K, V> withNull = multimap(); 72 new EqualsTester() 73 .addEqualityGroup(original) 74 .addEqualityGroup(withNull, getSubjectGenerator().create(createArrayWithNullValue())) 75 .testEquals(); 76 } 77 78 @CollectionSize.Require(absent = ZERO) testNotEqualsEmpty()79 public void testNotEqualsEmpty() { 80 new EqualsTester() 81 .addEqualityGroup(multimap()) 82 .addEqualityGroup(getSubjectGenerator().create()) 83 .testEquals(); 84 } 85 testHashCodeMatchesAsMap()86 public void testHashCodeMatchesAsMap() { 87 assertEquals(multimap().asMap().hashCode(), multimap().hashCode()); 88 } 89 } 90