MultimapContainsEntryTester.java revision 3c77433663281544363151bf284b0240dfd22a42
1/* 2 * Copyright (C) 2012 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 17package com.google.common.collect.testing.google; 18 19import static com.google.common.collect.testing.features.CollectionSize.ZERO; 20import static com.google.common.collect.testing.features.MapFeature.ALLOWS_NULL_KEYS; 21import static com.google.common.collect.testing.features.MapFeature.ALLOWS_NULL_QUERIES; 22import static com.google.common.collect.testing.features.MapFeature.ALLOWS_NULL_VALUES; 23 24import com.google.common.annotations.GwtCompatible; 25import com.google.common.collect.Multimap; 26import com.google.common.collect.testing.features.CollectionSize; 27import com.google.common.collect.testing.features.MapFeature; 28 29/** 30 * Tester for {@link Multimap#containsEntry}. 31 * 32 * @author Louis Wasserman 33 */ 34@GwtCompatible 35public class MultimapContainsEntryTester<K, V> 36 extends AbstractMultimapTester<K, V, Multimap<K, V>> { 37 @CollectionSize.Require(absent = ZERO) 38 public void testContainsEntryYes() { 39 assertTrue(multimap().containsEntry(sampleKeys().e0, sampleValues().e0)); 40 } 41 42 public void testContainsEntryNo() { 43 assertFalse(multimap().containsEntry(sampleKeys().e3, sampleValues().e3)); 44 } 45 46 public void testContainsEntryAgreesWithGet() { 47 for (K k : sampleKeys()) { 48 for (V v : sampleValues()) { 49 assertEquals(multimap().get(k).contains(v), 50 multimap().containsEntry(k, v)); 51 } 52 } 53 } 54 55 @CollectionSize.Require(absent = ZERO) 56 @MapFeature.Require({ ALLOWS_NULL_KEYS, ALLOWS_NULL_VALUES }) 57 public void testContainsEntryNullYes() { 58 initMultimapWithNullKeyAndValue(); 59 assertTrue(multimap().containsEntry(null, null)); 60 } 61 62 @MapFeature.Require(ALLOWS_NULL_QUERIES) 63 public void testContainsEntryNullNo() { 64 assertFalse(multimap().containsEntry(null, null)); 65 } 66 67 @MapFeature.Require(absent = ALLOWS_NULL_QUERIES) 68 public void testContainsEntryNullDisallowed() { 69 try { 70 multimap().containsEntry(null, null); 71 fail("Expected NullPointerException"); 72 } catch (NullPointerException expected) { 73 // success 74 } 75 } 76} 77