001/* 002 * Copyright (C) 2012 The Guava Authors 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016 017package com.google.common.collect.testing.google; 018 019import static com.google.common.collect.testing.Helpers.mapEntry; 020import static com.google.common.collect.testing.features.CollectionSize.SEVERAL; 021import static com.google.common.collect.testing.features.CollectionSize.ZERO; 022import static com.google.common.collect.testing.features.MapFeature.ALLOWS_NULL_KEYS; 023import static com.google.common.collect.testing.features.MapFeature.ALLOWS_NULL_VALUES; 024 025import com.google.common.annotations.GwtCompatible; 026import com.google.common.collect.Multimap; 027import com.google.common.collect.testing.features.CollectionSize; 028import com.google.common.collect.testing.features.MapFeature; 029import java.util.Collection; 030import java.util.Map.Entry; 031import org.junit.Ignore; 032 033/** 034 * Tester for the {@code size} methods of {@code Multimap} and its views. 035 * 036 * @author Louis Wasserman 037 */ 038@GwtCompatible 039@Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests. 040public class MultimapSizeTester<K, V> extends AbstractMultimapTester<K, V, Multimap<K, V>> { 041 042 public void testSize() { 043 int expectedSize = getNumElements(); 044 Multimap<K, V> multimap = multimap(); 045 assertEquals(expectedSize, multimap.size()); 046 047 int size = 0; 048 for (Entry<K, V> entry : multimap.entries()) { 049 assertTrue(multimap.containsEntry(entry.getKey(), entry.getValue())); 050 size++; 051 } 052 assertEquals(expectedSize, size); 053 054 int size2 = 0; 055 for (Entry<K, Collection<V>> entry2 : multimap.asMap().entrySet()) { 056 size2 += entry2.getValue().size(); 057 } 058 assertEquals(expectedSize, size2); 059 } 060 061 @CollectionSize.Require(ZERO) 062 public void testIsEmptyYes() { 063 assertTrue(multimap().isEmpty()); 064 } 065 066 @CollectionSize.Require(absent = ZERO) 067 public void testIsEmptyNo() { 068 assertFalse(multimap().isEmpty()); 069 } 070 071 @CollectionSize.Require(absent = ZERO) 072 @MapFeature.Require(ALLOWS_NULL_KEYS) 073 public void testSizeNullKey() { 074 initMultimapWithNullKey(); 075 assertEquals(getNumElements(), multimap().size()); 076 assertFalse(multimap().isEmpty()); 077 } 078 079 @CollectionSize.Require(absent = ZERO) 080 @MapFeature.Require(ALLOWS_NULL_VALUES) 081 public void testSizeNullValue() { 082 initMultimapWithNullValue(); 083 assertEquals(getNumElements(), multimap().size()); 084 assertFalse(multimap().isEmpty()); 085 } 086 087 @CollectionSize.Require(absent = ZERO) 088 @MapFeature.Require({ALLOWS_NULL_KEYS, ALLOWS_NULL_VALUES}) 089 public void testSizeNullKeyAndValue() { 090 initMultimapWithNullKeyAndValue(); 091 assertEquals(getNumElements(), multimap().size()); 092 assertFalse(multimap().isEmpty()); 093 } 094 095 @CollectionSize.Require(SEVERAL) 096 public void testSizeMultipleValues() { 097 resetContainer(mapEntry(k0(), v0()), mapEntry(k0(), v1()), mapEntry(k0(), v2())); 098 099 assertEquals(3, multimap().size()); 100 assertEquals(3, multimap().entries().size()); 101 assertEquals(3, multimap().keys().size()); 102 103 assertEquals(1, multimap().keySet().size()); 104 assertEquals(1, multimap().asMap().size()); 105 } 106}