001/* 002 * Copyright (C) 2015 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.testers; 018 019import static com.google.common.collect.testing.features.CollectionSize.ZERO; 020import static com.google.common.collect.testing.features.MapFeature.ALLOWS_NULL_KEY_QUERIES; 021import static com.google.common.collect.testing.features.MapFeature.ALLOWS_NULL_VALUE_QUERIES; 022import static com.google.common.collect.testing.features.MapFeature.SUPPORTS_REMOVE; 023 024import com.google.common.annotations.GwtCompatible; 025import com.google.common.collect.testing.AbstractMapTester; 026import com.google.common.collect.testing.features.CollectionSize; 027import com.google.common.collect.testing.features.MapFeature; 028import java.util.concurrent.ConcurrentMap; 029 030/** 031 * Tester for {@link ConcurrentMap#remove}. Can't be invoked directly; please see {@link 032 * com.google.common.collect.testing.ConcurrentMapTestSuiteBuilder}. 033 * 034 * @author Louis Wasserman 035 */ 036@GwtCompatible 037public class ConcurrentMapRemoveTester<K, V> extends AbstractMapTester<K, V> { 038 @Override 039 protected ConcurrentMap<K, V> getMap() { 040 return (ConcurrentMap<K, V>) super.getMap(); 041 } 042 043 @MapFeature.Require(SUPPORTS_REMOVE) 044 @CollectionSize.Require(absent = ZERO) 045 public void testRemove_supportedPresent() { 046 assertTrue(getMap().remove(k0(), v0())); 047 expectMissing(e0()); 048 } 049 050 @MapFeature.Require(SUPPORTS_REMOVE) 051 public void testRemove_supportedPresentKeyWrongValue() { 052 assertFalse(getMap().remove(k0(), v3())); 053 expectUnchanged(); 054 } 055 056 @MapFeature.Require(SUPPORTS_REMOVE) 057 public void testRemove_supportedWrongKeyPresentValue() { 058 assertFalse(getMap().remove(k3(), v0())); 059 expectUnchanged(); 060 } 061 062 @MapFeature.Require(SUPPORTS_REMOVE) 063 public void testRemove_supportedAbsentKeyAbsentValue() { 064 assertFalse(getMap().remove(k3(), v3())); 065 expectUnchanged(); 066 } 067 068 @MapFeature.Require(value = SUPPORTS_REMOVE, absent = ALLOWS_NULL_KEY_QUERIES) 069 public void testRemove_nullKeyQueriesUnsupported() { 070 try { 071 assertFalse(getMap().remove(null, v3())); 072 } catch (NullPointerException tolerated) { 073 // since the operation would be a no-op, the exception is not required 074 } 075 expectUnchanged(); 076 } 077 078 @MapFeature.Require(value = SUPPORTS_REMOVE, absent = ALLOWS_NULL_VALUE_QUERIES) 079 public void testRemove_nullValueQueriesUnsupported() { 080 try { 081 assertFalse(getMap().remove(k3(), null)); 082 } catch (NullPointerException tolerated) { 083 // since the operation would be a no-op, the exception is not required 084 } 085 expectUnchanged(); 086 } 087 088 @MapFeature.Require(absent = SUPPORTS_REMOVE) 089 @CollectionSize.Require(absent = ZERO) 090 public void testRemove_unsupportedPresent() { 091 try { 092 getMap().remove(k0(), v0()); 093 fail("Expected UnsupportedOperationException"); 094 } catch (UnsupportedOperationException expected) { 095 } 096 expectUnchanged(); 097 } 098 099 @MapFeature.Require(absent = SUPPORTS_REMOVE) 100 public void testRemove_unsupportedAbsent() { 101 try { 102 assertFalse(getMap().remove(k0(), v3())); 103 } catch (UnsupportedOperationException tolerated) { 104 // since the operation would be a no-op, the exception is not required 105 } 106 expectUnchanged(); 107 } 108}