001/* 002 * Copyright (C) 2008 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.CollectionSize.ONE; 020import static com.google.common.collect.testing.features.CollectionSize.ZERO; 021 022import com.google.common.annotations.GwtCompatible; 023import com.google.common.collect.HashMultiset; 024import com.google.common.collect.Multiset; 025import com.google.common.collect.Multisets; 026import com.google.common.collect.testing.features.CollectionSize; 027import org.junit.Ignore; 028 029/** 030 * A generic JUnit test which tests multiset-specific read operations. Can't be invoked directly; 031 * please see {@link com.google.common.collect.testing.SetTestSuiteBuilder}. 032 * 033 * @author Jared Levy 034 */ 035@GwtCompatible 036@Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests. 037public class MultisetReadsTester<E> extends AbstractMultisetTester<E> { 038 039 @CollectionSize.Require(absent = ZERO) 040 public void testElementSet_contains() { 041 assertTrue( 042 "multiset.elementSet().contains(present) returned false", 043 getMultiset().elementSet().contains(e0())); 044 } 045 046 @CollectionSize.Require(absent = ZERO) 047 public void testEntrySet_contains() { 048 assertTrue( 049 "multiset.entrySet() didn't contain [present, 1]", 050 getMultiset().entrySet().contains(Multisets.immutableEntry(e0(), 1))); 051 } 052 053 public void testEntrySet_contains_count0() { 054 assertFalse( 055 "multiset.entrySet() contains [missing, 0]", 056 getMultiset().entrySet().contains(Multisets.immutableEntry(e3(), 0))); 057 } 058 059 public void testEntrySet_contains_nonentry() { 060 assertFalse( 061 "multiset.entrySet() contains a non-entry", getMultiset().entrySet().contains(e0())); 062 } 063 064 public void testEntrySet_twice() { 065 assertEquals( 066 "calling multiset.entrySet() twice returned unequal sets", 067 getMultiset().entrySet(), 068 getMultiset().entrySet()); 069 } 070 071 @CollectionSize.Require(ZERO) 072 public void testEntrySet_hashCode_size0() { 073 assertEquals( 074 "multiset.entrySet() has incorrect hash code", 0, getMultiset().entrySet().hashCode()); 075 } 076 077 @CollectionSize.Require(ONE) 078 public void testEntrySet_hashCode_size1() { 079 assertEquals( 080 "multiset.entrySet() has incorrect hash code", 081 1 ^ e0().hashCode(), 082 getMultiset().entrySet().hashCode()); 083 } 084 085 public void testEquals_yes() { 086 assertTrue( 087 "multiset doesn't equal a multiset with the same elements", 088 getMultiset().equals(HashMultiset.create(getSampleElements()))); 089 } 090 091 public void testEquals_differentSize() { 092 Multiset<E> other = HashMultiset.create(getSampleElements()); 093 other.add(e0()); 094 assertFalse("multiset equals a multiset with a different size", getMultiset().equals(other)); 095 } 096 097 @CollectionSize.Require(absent = ZERO) 098 public void testEquals_differentElements() { 099 Multiset<E> other = HashMultiset.create(getSampleElements()); 100 other.remove(e0()); 101 other.add(e3()); 102 assertFalse("multiset equals a multiset with different elements", getMultiset().equals(other)); 103 } 104 105 @CollectionSize.Require(ZERO) 106 public void testHashCode_size0() { 107 assertEquals("multiset has incorrect hash code", 0, getMultiset().hashCode()); 108 } 109 110 @CollectionSize.Require(ONE) 111 public void testHashCode_size1() { 112 assertEquals("multiset has incorrect hash code", 1 ^ e0().hashCode(), getMultiset().hashCode()); 113 } 114}