001/* 002 * Copyright (C) 2013 The Guava Authors 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except 005 * in compliance with the License. You may obtain a copy of the License at 006 * 007 * http://www.apache.org/licenses/LICENSE-2.0 008 * 009 * Unless required by applicable law or agreed to in writing, software distributed under the License 010 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express 011 * or implied. See the License for the specific language governing permissions and limitations under 012 * the License. 013 */ 014 015package com.google.common.collect.testing.google; 016 017import static com.google.common.collect.testing.features.CollectionSize.ZERO; 018import static com.google.common.collect.testing.features.MapFeature.ALLOWS_NULL_KEYS; 019import static com.google.common.collect.testing.features.MapFeature.ALLOWS_NULL_VALUES; 020 021import com.google.common.annotations.GwtCompatible; 022import com.google.common.collect.Multimap; 023import com.google.common.collect.testing.Helpers; 024import com.google.common.collect.testing.features.CollectionSize; 025import com.google.common.collect.testing.features.MapFeature; 026import com.google.common.testing.EqualsTester; 027import java.util.ArrayList; 028import java.util.List; 029import java.util.Map.Entry; 030import org.junit.Ignore; 031 032/** 033 * Tester for {@code Multimap.equals}. 034 * 035 * @author Louis Wasserman 036 */ 037@GwtCompatible 038@Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests. 039public class MultimapEqualsTester<K, V> extends AbstractMultimapTester<K, V, Multimap<K, V>> { 040 public void testEqualsTrue() { 041 new EqualsTester() 042 .addEqualityGroup(multimap(), getSubjectGenerator().create(getSampleElements().toArray())) 043 .testEquals(); 044 } 045 046 public void testEqualsFalse() { 047 List<Entry<K, V>> targetEntries = new ArrayList<>(getSampleElements()); 048 targetEntries.add(Helpers.mapEntry(k0(), v3())); 049 new EqualsTester() 050 .addEqualityGroup(multimap()) 051 .addEqualityGroup(getSubjectGenerator().create(targetEntries.toArray())) 052 .testEquals(); 053 } 054 055 @CollectionSize.Require(absent = ZERO) 056 @MapFeature.Require(ALLOWS_NULL_KEYS) 057 public void testEqualsMultimapWithNullKey() { 058 Multimap<K, V> original = multimap(); 059 initMultimapWithNullKey(); 060 Multimap<K, V> withNull = multimap(); 061 new EqualsTester() 062 .addEqualityGroup(original) 063 .addEqualityGroup( 064 withNull, getSubjectGenerator().create((Object[]) createArrayWithNullKey())) 065 .testEquals(); 066 } 067 068 @CollectionSize.Require(absent = ZERO) 069 @MapFeature.Require(ALLOWS_NULL_VALUES) 070 public void testEqualsMultimapWithNullValue() { 071 Multimap<K, V> original = multimap(); 072 initMultimapWithNullValue(); 073 Multimap<K, V> withNull = multimap(); 074 new EqualsTester() 075 .addEqualityGroup(original) 076 .addEqualityGroup( 077 withNull, getSubjectGenerator().create((Object[]) createArrayWithNullValue())) 078 .testEquals(); 079 } 080 081 @CollectionSize.Require(absent = ZERO) 082 public void testNotEqualsEmpty() { 083 new EqualsTester() 084 .addEqualityGroup(multimap()) 085 .addEqualityGroup(getSubjectGenerator().create()) 086 .testEquals(); 087 } 088 089 public void testHashCodeMatchesAsMap() { 090 assertEquals(multimap().asMap().hashCode(), multimap().hashCode()); 091 } 092}