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.checkerframework.checker.nullness.qual.Nullable; 032import org.junit.Ignore; 033 034/** 035 * Tester for the {@code size} methods of {@code Multimap} and its views. 036 * 037 * @author Louis Wasserman 038 */ 039@GwtCompatible 040@Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests. 041@ElementTypesAreNonnullByDefault 042public class MultimapSizeTester<K extends @Nullable Object, V extends @Nullable Object> 043 extends AbstractMultimapTester<K, V, Multimap<K, V>> { 044 045 public void testSize() { 046 int expectedSize = getNumElements(); 047 Multimap<K, V> multimap = multimap(); 048 assertEquals(expectedSize, multimap.size()); 049 050 int size = 0; 051 for (Entry<K, V> entry : multimap.entries()) { 052 assertTrue(multimap.containsEntry(entry.getKey(), entry.getValue())); 053 size++; 054 } 055 assertEquals(expectedSize, size); 056 057 int size2 = 0; 058 for (Entry<K, Collection<V>> entry2 : multimap.asMap().entrySet()) { 059 size2 += entry2.getValue().size(); 060 } 061 assertEquals(expectedSize, size2); 062 } 063 064 @CollectionSize.Require(ZERO) 065 public void testIsEmptyYes() { 066 assertTrue(multimap().isEmpty()); 067 } 068 069 @CollectionSize.Require(absent = ZERO) 070 public void testIsEmptyNo() { 071 assertFalse(multimap().isEmpty()); 072 } 073 074 @CollectionSize.Require(absent = ZERO) 075 @MapFeature.Require(ALLOWS_NULL_KEYS) 076 public void testSizeNullKey() { 077 initMultimapWithNullKey(); 078 assertEquals(getNumElements(), multimap().size()); 079 assertFalse(multimap().isEmpty()); 080 } 081 082 @CollectionSize.Require(absent = ZERO) 083 @MapFeature.Require(ALLOWS_NULL_VALUES) 084 public void testSizeNullValue() { 085 initMultimapWithNullValue(); 086 assertEquals(getNumElements(), multimap().size()); 087 assertFalse(multimap().isEmpty()); 088 } 089 090 @CollectionSize.Require(absent = ZERO) 091 @MapFeature.Require({ALLOWS_NULL_KEYS, ALLOWS_NULL_VALUES}) 092 public void testSizeNullKeyAndValue() { 093 initMultimapWithNullKeyAndValue(); 094 assertEquals(getNumElements(), multimap().size()); 095 assertFalse(multimap().isEmpty()); 096 } 097 098 @CollectionSize.Require(SEVERAL) 099 public void testSizeMultipleValues() { 100 resetContainer(mapEntry(k0(), v0()), mapEntry(k0(), v1()), mapEntry(k0(), v2())); 101 102 assertEquals(3, multimap().size()); 103 assertEquals(3, multimap().entries().size()); 104 assertEquals(3, multimap().keys().size()); 105 106 assertEquals(1, multimap().keySet().size()); 107 assertEquals(1, multimap().asMap().size()); 108 } 109}