1 /* 2 * Copyright (C) 2013 The Guava Authors 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.google.common.collect.testing.testers; 18 19 import static com.google.common.collect.testing.features.CollectionFeature.SUPPORTS_ITERATOR_REMOVE; 20 import static com.google.common.collect.testing.features.CollectionSize.ONE; 21 import static com.google.common.collect.testing.features.CollectionSize.ZERO; 22 import static com.google.common.collect.testing.features.MapFeature.ALLOWS_NULL_KEYS; 23 import static com.google.common.collect.testing.features.MapFeature.ALLOWS_NULL_KEY_QUERIES; 24 import static com.google.common.collect.testing.features.MapFeature.ALLOWS_NULL_VALUES; 25 import static com.google.common.collect.testing.features.MapFeature.ALLOWS_NULL_VALUE_QUERIES; 26 27 import com.google.common.annotations.GwtCompatible; 28 import com.google.common.annotations.GwtIncompatible; 29 import com.google.common.collect.testing.AbstractMapTester; 30 import com.google.common.collect.testing.Helpers; 31 import com.google.common.collect.testing.features.CollectionFeature; 32 import com.google.common.collect.testing.features.CollectionSize; 33 import com.google.common.collect.testing.features.MapFeature; 34 35 import java.lang.reflect.Method; 36 import java.util.Iterator; 37 import java.util.Map.Entry; 38 import java.util.Set; 39 40 /** 41 * Tests {@link java.util.Map#entrySet}. 42 * 43 * @author Louis Wasserman 44 * @param <K> The key type of the map implementation under test. 45 * @param <V> The value type of the map implementation under test. 46 */ 47 @GwtCompatible 48 public class MapEntrySetTester<K, V> extends AbstractMapTester<K, V> { 49 private enum IncomparableType { 50 INSTANCE; 51 } 52 53 @CollectionSize.Require(ONE) 54 @CollectionFeature.Require(SUPPORTS_ITERATOR_REMOVE) testEntrySetIteratorRemove()55 public void testEntrySetIteratorRemove() { 56 Set<Entry<K, V>> entrySet = getMap().entrySet(); 57 Iterator<Entry<K, V>> entryItr = entrySet.iterator(); 58 assertEquals(samples.e0, entryItr.next()); 59 entryItr.remove(); 60 assertTrue(getMap().isEmpty()); 61 assertFalse(entrySet.contains(samples.e0)); 62 } 63 testContainsEntryWithIncomparableKey()64 public void testContainsEntryWithIncomparableKey() { 65 assertFalse(getMap() 66 .entrySet().contains(Helpers.mapEntry(IncomparableType.INSTANCE, samples.e0.getValue()))); 67 } 68 testContainsEntryWithIncomparableValue()69 public void testContainsEntryWithIncomparableValue() { 70 assertFalse(getMap() 71 .entrySet().contains(Helpers.mapEntry(samples.e0.getKey(), IncomparableType.INSTANCE))); 72 } 73 74 @MapFeature.Require(ALLOWS_NULL_KEY_QUERIES) testContainsEntryWithNullKeyAbsent()75 public void testContainsEntryWithNullKeyAbsent() { 76 assertFalse(getMap() 77 .entrySet().contains(Helpers.mapEntry(null, samples.e0.getValue()))); 78 } 79 80 @CollectionSize.Require(absent = ZERO) 81 @MapFeature.Require(ALLOWS_NULL_KEYS) testContainsEntryWithNullKeyPresent()82 public void testContainsEntryWithNullKeyPresent() { 83 initMapWithNullKey(); 84 assertTrue(getMap() 85 .entrySet().contains(Helpers.mapEntry(null, getValueForNullKey()))); 86 } 87 88 @MapFeature.Require(ALLOWS_NULL_VALUE_QUERIES) testContainsEntryWithNullValueAbsent()89 public void testContainsEntryWithNullValueAbsent() { 90 assertFalse(getMap() 91 .entrySet().contains(Helpers.mapEntry(samples.e0.getKey(), null))); 92 } 93 94 @CollectionSize.Require(absent = ZERO) 95 @MapFeature.Require(ALLOWS_NULL_VALUES) testContainsEntryWithNullValuePresent()96 public void testContainsEntryWithNullValuePresent() { 97 initMapWithNullValue(); 98 assertTrue(getMap() 99 .entrySet().contains(Helpers.mapEntry(getKeyForNullValue(), null))); 100 } 101 102 @GwtIncompatible("reflection") getContainsEntryWithIncomparableKeyMethod()103 public static Method getContainsEntryWithIncomparableKeyMethod() { 104 return Helpers.getMethod(MapEntrySetTester.class, "testContainsEntryWithIncomparableKey"); 105 } 106 107 @GwtIncompatible("reflection") getContainsEntryWithIncomparableValueMethod()108 public static Method getContainsEntryWithIncomparableValueMethod() { 109 return Helpers.getMethod(MapEntrySetTester.class, "testContainsEntryWithIncomparableValue"); 110 } 111 } 112