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