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.Helpers.assertContainsAllOf; 018import static com.google.common.collect.testing.features.CollectionFeature.SUPPORTS_ITERATOR_REMOVE; 019import static com.google.common.collect.testing.features.CollectionSize.ONE; 020import static com.google.common.collect.testing.features.CollectionSize.SEVERAL; 021import static com.google.common.collect.testing.features.MapFeature.ALLOWS_NULL_KEYS; 022import static com.google.common.collect.testing.features.MapFeature.ALLOWS_NULL_KEY_QUERIES; 023import static com.google.common.collect.testing.features.MapFeature.SUPPORTS_REMOVE; 024 025import com.google.common.annotations.GwtCompatible; 026import com.google.common.collect.Multimap; 027import com.google.common.collect.Multiset; 028import com.google.common.collect.Multisets; 029import com.google.common.collect.testing.Helpers; 030import com.google.common.collect.testing.features.CollectionFeature; 031import com.google.common.collect.testing.features.CollectionSize; 032import com.google.common.collect.testing.features.MapFeature; 033import java.util.Iterator; 034import org.junit.Ignore; 035 036/** 037 * Tester for {@code Multimap.entries}. 038 * 039 * @author Louis Wasserman 040 */ 041@GwtCompatible 042@Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests. 043public class MultimapKeysTester<K, V> extends AbstractMultimapTester<K, V, Multimap<K, V>> { 044 @CollectionSize.Require(SEVERAL) 045 public void testKeys() { 046 resetContainer( 047 Helpers.mapEntry(k0(), v0()), Helpers.mapEntry(k0(), v1()), Helpers.mapEntry(k1(), v0())); 048 Multiset<K> keys = multimap().keys(); 049 assertEquals(2, keys.count(k0())); 050 assertEquals(1, keys.count(k1())); 051 assertEquals(3, keys.size()); 052 assertContainsAllOf(keys, k0(), k1()); 053 assertContainsAllOf( 054 keys.entrySet(), Multisets.immutableEntry(k0(), 2), Multisets.immutableEntry(k1(), 1)); 055 } 056 057 @MapFeature.Require(ALLOWS_NULL_KEY_QUERIES) 058 public void testKeysCountAbsentNullKey() { 059 assertEquals(0, multimap().keys().count(null)); 060 } 061 062 @CollectionSize.Require(SEVERAL) 063 @MapFeature.Require(ALLOWS_NULL_KEYS) 064 public void testKeysWithNullKey() { 065 resetContainer( 066 Helpers.mapEntry((K) null, v0()), 067 Helpers.mapEntry((K) null, v1()), 068 Helpers.mapEntry(k1(), v0())); 069 Multiset<K> keys = multimap().keys(); 070 assertEquals(2, keys.count(null)); 071 assertEquals(1, keys.count(k1())); 072 assertEquals(3, keys.size()); 073 assertContainsAllOf(keys, null, k1()); 074 assertContainsAllOf( 075 keys.entrySet(), Multisets.immutableEntry((K) null, 2), Multisets.immutableEntry(k1(), 1)); 076 } 077 078 public void testKeysElementSet() { 079 assertEquals(multimap().keySet(), multimap().keys().elementSet()); 080 } 081 082 @MapFeature.Require(SUPPORTS_REMOVE) 083 public void testKeysRemove() { 084 int original = multimap().keys().remove(k0(), 1); 085 assertEquals(Math.max(original - 1, 0), multimap().get(k0()).size()); 086 } 087 088 @CollectionSize.Require(ONE) 089 @CollectionFeature.Require(SUPPORTS_ITERATOR_REMOVE) 090 public void testKeysEntrySetIteratorRemove() { 091 Multiset<K> keys = multimap().keys(); 092 Iterator<Multiset.Entry<K>> itr = keys.entrySet().iterator(); 093 assertEquals(Multisets.immutableEntry(k0(), 1), itr.next()); 094 itr.remove(); 095 assertTrue(multimap().isEmpty()); 096 } 097 098 @CollectionSize.Require(SEVERAL) 099 @MapFeature.Require(SUPPORTS_REMOVE) 100 public void testKeysEntrySetRemove() { 101 resetContainer( 102 Helpers.mapEntry(k0(), v0()), Helpers.mapEntry(k0(), v1()), Helpers.mapEntry(k1(), v0())); 103 assertTrue(multimap().keys().entrySet().remove(Multisets.immutableEntry(k0(), 2))); 104 assertEquals(1, multimap().size()); 105 assertTrue(multimap().containsEntry(k1(), v0())); 106 } 107}