1 /* 2 * Copyright (C) 2007 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 17 package com.google.common.collect.testing.testers; 18 19 import static com.google.common.collect.testing.features.CollectionFeature.ALLOWS_NULL_QUERIES; 20 import static com.google.common.collect.testing.features.CollectionFeature.ALLOWS_NULL_VALUES; 21 import static com.google.common.collect.testing.features.CollectionSize.ZERO; 22 23 import com.google.common.annotations.GwtCompatible; 24 import com.google.common.collect.testing.AbstractCollectionTester; 25 import com.google.common.collect.testing.WrongType; 26 import com.google.common.collect.testing.features.CollectionFeature; 27 import com.google.common.collect.testing.features.CollectionSize; 28 import org.junit.Ignore; 29 30 /** 31 * A generic JUnit test which tests {@code contains()} operations on a collection. Can't be invoked 32 * directly; please see {@link com.google.common.collect.testing.CollectionTestSuiteBuilder}. 33 * 34 * @author Kevin Bourrillion 35 * @author Chris Povirk 36 */ 37 @GwtCompatible 38 @Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests. 39 public class CollectionContainsTester<E> extends AbstractCollectionTester<E> { 40 @CollectionSize.Require(absent = ZERO) testContains_yes()41 public void testContains_yes() { 42 assertTrue("contains(present) should return true", collection.contains(e0())); 43 } 44 testContains_no()45 public void testContains_no() { 46 assertFalse("contains(notPresent) should return false", collection.contains(e3())); 47 } 48 49 @CollectionFeature.Require(ALLOWS_NULL_QUERIES) testContains_nullNotContainedButQueriesSupported()50 public void testContains_nullNotContainedButQueriesSupported() { 51 assertFalse("contains(null) should return false", collection.contains(null)); 52 } 53 54 @CollectionFeature.Require(absent = ALLOWS_NULL_QUERIES) testContains_nullNotContainedAndUnsupported()55 public void testContains_nullNotContainedAndUnsupported() { 56 expectNullMissingWhenNullUnsupported("contains(null) should return false or throw"); 57 } 58 59 @CollectionFeature.Require(ALLOWS_NULL_VALUES) 60 @CollectionSize.Require(absent = ZERO) testContains_nonNullWhenNullContained()61 public void testContains_nonNullWhenNullContained() { 62 initCollectionWithNullElement(); 63 assertFalse("contains(notPresent) should return false", collection.contains(e3())); 64 } 65 66 @CollectionFeature.Require(ALLOWS_NULL_VALUES) 67 @CollectionSize.Require(absent = ZERO) testContains_nullContained()68 public void testContains_nullContained() { 69 initCollectionWithNullElement(); 70 assertTrue("contains(null) should return true", collection.contains(null)); 71 } 72 testContains_wrongType()73 public void testContains_wrongType() { 74 try { 75 assertFalse( 76 "contains(wrongType) should return false or throw", collection.contains(WrongType.VALUE)); 77 } catch (ClassCastException tolerated) { 78 } 79 } 80 } 81