001/* 002 * Copyright (C) 2008 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_KEYS; 021import static com.google.common.collect.testing.features.MapFeature.ALLOWS_NULL_KEY_QUERIES; 022import static com.google.common.collect.testing.features.MapFeature.ALLOWS_NULL_VALUES; 023 024import com.google.common.annotations.GwtCompatible; 025import com.google.common.collect.testing.AbstractMapTester; 026import com.google.common.collect.testing.WrongType; 027import com.google.common.collect.testing.features.CollectionSize; 028import com.google.common.collect.testing.features.MapFeature; 029import org.junit.Ignore; 030 031/** 032 * A generic JUnit test which tests {@code containsKey()} operations on a map. Can't be invoked 033 * directly; please see {@link com.google.common.collect.testing.MapTestSuiteBuilder}. 034 * 035 * @author George van den Driessche 036 */ 037@GwtCompatible 038@Ignore("test runners must not instantiate and run this directly, only via suites we build") 039// @Ignore affects the Android test runner, which respects JUnit 4 annotations on JUnit 3 tests. 040@SuppressWarnings("JUnit4ClassUsedInJUnit3") 041public class MapContainsKeyTester<K, V> extends AbstractMapTester<K, V> { 042 @CollectionSize.Require(absent = ZERO) 043 public void testContains_yes() { 044 assertTrue("containsKey(present) should return true", getMap().containsKey(k0())); 045 } 046 047 public void testContains_no() { 048 assertFalse("containsKey(notPresent) should return false", getMap().containsKey(k3())); 049 } 050 051 @MapFeature.Require(ALLOWS_NULL_KEY_QUERIES) 052 public void testContains_nullNotContainedButAllowed() { 053 assertFalse("containsKey(null) should return false", getMap().containsKey(null)); 054 } 055 056 @MapFeature.Require(absent = ALLOWS_NULL_KEY_QUERIES) 057 public void testContains_nullNotContainedAndUnsupported() { 058 expectNullKeyMissingWhenNullKeysUnsupported("containsKey(null) should return false or throw"); 059 } 060 061 @MapFeature.Require(ALLOWS_NULL_KEYS) 062 @CollectionSize.Require(absent = ZERO) 063 public void testContains_nonNullWhenNullContained() { 064 initMapWithNullKey(); 065 assertFalse("containsKey(notPresent) should return false", getMap().containsKey(k3())); 066 } 067 068 @MapFeature.Require(ALLOWS_NULL_KEYS) 069 @CollectionSize.Require(absent = ZERO) 070 public void testContains_nullContained() { 071 initMapWithNullKey(); 072 assertTrue("containsKey(null) should return true", getMap().containsKey(null)); 073 } 074 075 @MapFeature.Require(ALLOWS_NULL_VALUES) 076 @CollectionSize.Require(absent = ZERO) 077 public void testContains_keyWithNullValueContained() { 078 initMapWithNullValue(); 079 assertTrue( 080 "containsKey(keyForNullValue) should return true", 081 getMap().containsKey(getKeyForNullValue())); 082 } 083 084 public void testContains_wrongType() { 085 try { 086 // noinspection SuspiciousMethodCalls 087 assertFalse( 088 "containsKey(wrongType) should return false or throw", 089 getMap().containsKey(WrongType.VALUE)); 090 } catch (ClassCastException tolerated) { 091 } 092 } 093}