001/* 002 * Copyright (C) 2012 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.google; 018 019import static com.google.common.collect.testing.features.CollectionSize.ZERO; 020import static com.google.common.collect.testing.features.MapFeature.ALLOWS_NULL_KEYS; 021import static com.google.common.collect.testing.features.MapFeature.ALLOWS_NULL_KEY_QUERIES; 022 023import com.google.common.annotations.GwtCompatible; 024import com.google.common.collect.Multimap; 025import com.google.common.collect.testing.features.CollectionSize; 026import com.google.common.collect.testing.features.MapFeature; 027 028/** 029 * Tester for the {@code containsKey} methods of {@code Multimap} and its {@code asMap()} view. 030 * 031 * @author Louis Wasserman 032 */ 033@GwtCompatible 034public class MultimapContainsKeyTester<K, V> extends AbstractMultimapTester<K, V, Multimap<K, V>> { 035 @CollectionSize.Require(absent = ZERO) 036 public void testContainsKeyYes() { 037 assertTrue(multimap().containsKey(k0())); 038 } 039 040 public void testContainsKeyNo() { 041 assertFalse(multimap().containsKey(k3())); 042 } 043 044 public void testContainsKeysFromKeySet() { 045 for (K k : multimap().keySet()) { 046 assertTrue(multimap().containsKey(k)); 047 } 048 } 049 050 public void testContainsKeyAgreesWithGet() { 051 for (K k : sampleKeys()) { 052 assertEquals(!multimap().get(k).isEmpty(), multimap().containsKey(k)); 053 } 054 } 055 056 public void testContainsKeyAgreesWithAsMap() { 057 for (K k : sampleKeys()) { 058 assertEquals(multimap().containsKey(k), multimap().asMap().containsKey(k)); 059 } 060 } 061 062 public void testContainsKeyAgreesWithKeySet() { 063 for (K k : sampleKeys()) { 064 assertEquals(multimap().containsKey(k), multimap().keySet().contains(k)); 065 } 066 } 067 068 @MapFeature.Require(ALLOWS_NULL_KEYS) 069 @CollectionSize.Require(absent = ZERO) 070 public void testContainsKeyNullPresent() { 071 initMultimapWithNullKey(); 072 assertTrue(multimap().containsKey(null)); 073 } 074 075 @MapFeature.Require(ALLOWS_NULL_KEY_QUERIES) 076 public void testContainsKeyNullAbsent() { 077 assertFalse(multimap().containsKey(null)); 078 } 079 080 @MapFeature.Require(absent = ALLOWS_NULL_KEY_QUERIES) 081 public void testContainsKeyNullDisallowed() { 082 try { 083 multimap().containsKey(null); 084 fail("Expected NullPointerException"); 085 } catch (NullPointerException expected) { 086 // success 087 } 088 } 089}