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; 029import org.junit.Ignore; 030 031/** 032 * Tester for {@link ConcurrentMap#remove}. Can't be invoked directly; please see {@link 033 * com.google.common.collect.testing.ConcurrentMapTestSuiteBuilder}. 034 * 035 * @author Louis Wasserman 036 */ 037@GwtCompatible 038@Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests. 039public class ConcurrentMapRemoveTester<K, V> extends AbstractMapTester<K, V> { 040 @Override 041 protected ConcurrentMap<K, V> getMap() { 042 return (ConcurrentMap<K, V>) super.getMap(); 043 } 044 045 @MapFeature.Require(SUPPORTS_REMOVE) 046 @CollectionSize.Require(absent = ZERO) 047 public void testRemove_supportedPresent() { 048 assertTrue(getMap().remove(k0(), v0())); 049 expectMissing(e0()); 050 } 051 052 @MapFeature.Require(SUPPORTS_REMOVE) 053 public void testRemove_supportedPresentKeyWrongValue() { 054 assertFalse(getMap().remove(k0(), v3())); 055 expectUnchanged(); 056 } 057 058 @MapFeature.Require(SUPPORTS_REMOVE) 059 public void testRemove_supportedWrongKeyPresentValue() { 060 assertFalse(getMap().remove(k3(), v0())); 061 expectUnchanged(); 062 } 063 064 @MapFeature.Require(SUPPORTS_REMOVE) 065 public void testRemove_supportedAbsentKeyAbsentValue() { 066 assertFalse(getMap().remove(k3(), v3())); 067 expectUnchanged(); 068 } 069 070 @MapFeature.Require(value = SUPPORTS_REMOVE, absent = ALLOWS_NULL_KEY_QUERIES) 071 public void testRemove_nullKeyQueriesUnsupported() { 072 try { 073 assertFalse(getMap().remove(null, v3())); 074 } catch (NullPointerException tolerated) { 075 // since the operation would be a no-op, the exception is not required 076 } 077 expectUnchanged(); 078 } 079 080 @MapFeature.Require(value = SUPPORTS_REMOVE, absent = ALLOWS_NULL_VALUE_QUERIES) 081 public void testRemove_nullValueQueriesUnsupported() { 082 try { 083 assertFalse(getMap().remove(k3(), null)); 084 } catch (NullPointerException tolerated) { 085 // since the operation would be a no-op, the exception is not required 086 } 087 expectUnchanged(); 088 } 089 090 @MapFeature.Require(absent = SUPPORTS_REMOVE) 091 @CollectionSize.Require(absent = ZERO) 092 public void testRemove_unsupportedPresent() { 093 try { 094 getMap().remove(k0(), v0()); 095 fail("Expected UnsupportedOperationException"); 096 } catch (UnsupportedOperationException expected) { 097 } 098 expectUnchanged(); 099 } 100 101 @MapFeature.Require(absent = SUPPORTS_REMOVE) 102 public void testRemove_unsupportedAbsent() { 103 try { 104 assertFalse(getMap().remove(k0(), v3())); 105 } catch (UnsupportedOperationException tolerated) { 106 // since the operation would be a no-op, the exception is not required 107 } 108 expectUnchanged(); 109 } 110}