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