001/* 002 * Copyright (C) 2013 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.features.CollectionFeature.SUPPORTS_ADD; 020import static com.google.common.collect.testing.google.ReflectionFreeAssertThrows.assertThrows; 021import static java.util.Arrays.asList; 022 023import com.google.common.annotations.GwtCompatible; 024import com.google.common.collect.testing.features.CollectionFeature; 025import java.util.Collections; 026import org.junit.Ignore; 027 028/** 029 * Tests for {@code Multiset.add}. 030 * 031 * @author Jared Levy 032 */ 033@GwtCompatible 034@Ignore("test runners must not instantiate and run this directly, only via suites we build") 035// @Ignore affects the Android test runner, which respects JUnit 4 annotations on JUnit 3 tests. 036@SuppressWarnings("JUnit4ClassUsedInJUnit3") 037public class MultisetAddTester<E> extends AbstractMultisetTester<E> { 038 @CollectionFeature.Require(absent = SUPPORTS_ADD) 039 public void testAddUnsupported() { 040 assertThrows(UnsupportedOperationException.class, () -> getMultiset().add(e0())); 041 } 042 043 @CollectionFeature.Require(SUPPORTS_ADD) 044 public void testAddMeansAddOne() { 045 int originalCount = getMultiset().count(e0()); 046 assertTrue(getMultiset().add(e0())); 047 assertEquals(originalCount + 1, getMultiset().count(e0())); 048 } 049 050 @CollectionFeature.Require(SUPPORTS_ADD) 051 public void testAddOccurrencesZero() { 052 int originalCount = getMultiset().count(e0()); 053 assertEquals("old count", originalCount, getMultiset().add(e0(), 0)); 054 expectUnchanged(); 055 } 056 057 @CollectionFeature.Require(SUPPORTS_ADD) 058 public void testAddOccurrences() { 059 int originalCount = getMultiset().count(e0()); 060 assertEquals("old count", originalCount, getMultiset().add(e0(), 2)); 061 assertEquals("old count", originalCount + 2, getMultiset().count(e0())); 062 } 063 064 @CollectionFeature.Require(SUPPORTS_ADD) 065 public void testAddSeveralTimes() { 066 int originalCount = getMultiset().count(e0()); 067 assertEquals(originalCount, getMultiset().add(e0(), 2)); 068 assertTrue(getMultiset().add(e0())); 069 assertEquals(originalCount + 3, getMultiset().add(e0(), 1)); 070 assertEquals(originalCount + 4, getMultiset().count(e0())); 071 } 072 073 @CollectionFeature.Require(absent = SUPPORTS_ADD) 074 public void testAddOccurrences_unsupported() { 075 assertThrows(UnsupportedOperationException.class, () -> getMultiset().add(e0(), 2)); 076 } 077 078 @CollectionFeature.Require(SUPPORTS_ADD) 079 public void testAddOccurrencesNegative() { 080 assertThrows(IllegalArgumentException.class, () -> getMultiset().add(e0(), -1)); 081 } 082 083 @CollectionFeature.Require(SUPPORTS_ADD) 084 public void testAddTooMany() { 085 getMultiset().add(e3(), Integer.MAX_VALUE); 086 assertThrows(IllegalArgumentException.class, () -> getMultiset().add(e3())); 087 assertEquals(Integer.MAX_VALUE, getMultiset().count(e3())); 088 assertEquals(Integer.MAX_VALUE, getMultiset().size()); 089 } 090 091 @CollectionFeature.Require(SUPPORTS_ADD) 092 public void testAddAll_emptySet() { 093 assertFalse(getMultiset().addAll(Collections.<E>emptySet())); 094 expectUnchanged(); 095 } 096 097 @CollectionFeature.Require(SUPPORTS_ADD) 098 public void testAddAll_emptyMultiset() { 099 assertFalse(getMultiset().addAll(getSubjectGenerator().create())); 100 expectUnchanged(); 101 } 102 103 @CollectionFeature.Require(SUPPORTS_ADD) 104 public void testAddAll_nonEmptyList() { 105 assertTrue(getMultiset().addAll(asList(e3(), e4(), e3()))); 106 expectAdded(e3(), e4(), e3()); 107 } 108 109 @CollectionFeature.Require(SUPPORTS_ADD) 110 public void testAddAll_nonEmptyMultiset() { 111 assertTrue(getMultiset().addAll(getSubjectGenerator().create(e3(), e4(), e3()))); 112 expectAdded(e3(), e4(), e3()); 113 } 114}