001/* 002 * Copyright (C) 2007 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.CollectionFeature.ALLOWS_NULL_QUERIES; 020import static com.google.common.collect.testing.features.CollectionFeature.ALLOWS_NULL_VALUES; 021import static com.google.common.collect.testing.features.CollectionSize.ZERO; 022 023import com.google.common.annotations.GwtCompatible; 024import com.google.common.collect.testing.AbstractCollectionTester; 025import com.google.common.collect.testing.WrongType; 026import com.google.common.collect.testing.features.CollectionFeature; 027import com.google.common.collect.testing.features.CollectionSize; 028import org.junit.Ignore; 029 030/** 031 * A generic JUnit test which tests {@code contains()} operations on a collection. Can't be invoked 032 * directly; please see {@link com.google.common.collect.testing.CollectionTestSuiteBuilder}. 033 * 034 * @author Kevin Bourrillion 035 * @author Chris Povirk 036 */ 037@GwtCompatible 038@Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests. 039public class CollectionContainsTester<E> extends AbstractCollectionTester<E> { 040 @CollectionSize.Require(absent = ZERO) 041 public void testContains_yes() { 042 assertTrue("contains(present) should return true", collection.contains(e0())); 043 } 044 045 public void testContains_no() { 046 assertFalse("contains(notPresent) should return false", collection.contains(e3())); 047 } 048 049 @CollectionFeature.Require(ALLOWS_NULL_QUERIES) 050 public void testContains_nullNotContainedButQueriesSupported() { 051 assertFalse("contains(null) should return false", collection.contains(null)); 052 } 053 054 @CollectionFeature.Require(absent = ALLOWS_NULL_QUERIES) 055 public void testContains_nullNotContainedAndUnsupported() { 056 expectNullMissingWhenNullUnsupported("contains(null) should return false or throw"); 057 } 058 059 @CollectionFeature.Require(ALLOWS_NULL_VALUES) 060 @CollectionSize.Require(absent = ZERO) 061 public void testContains_nonNullWhenNullContained() { 062 initCollectionWithNullElement(); 063 assertFalse("contains(notPresent) should return false", collection.contains(e3())); 064 } 065 066 @CollectionFeature.Require(ALLOWS_NULL_VALUES) 067 @CollectionSize.Require(absent = ZERO) 068 public void testContains_nullContained() { 069 initCollectionWithNullElement(); 070 assertTrue("contains(null) should return true", collection.contains(null)); 071 } 072 073 public void testContains_wrongType() { 074 try { 075 assertFalse( 076 "contains(wrongType) should return false or throw", collection.contains(WrongType.VALUE)); 077 } catch (ClassCastException tolerated) { 078 } 079 } 080}