1 /* 2 * Copyright (C) 2008 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_VALUES; 20 import static com.google.common.collect.testing.features.CollectionFeature.REJECTS_DUPLICATES_AT_CREATION; 21 import static com.google.common.collect.testing.features.CollectionSize.ONE; 22 import static com.google.common.collect.testing.features.CollectionSize.ZERO; 23 24 import com.google.common.annotations.GwtCompatible; 25 import com.google.common.collect.testing.features.CollectionFeature; 26 import com.google.common.collect.testing.features.CollectionSize; 27 28 import java.util.Arrays; 29 import java.util.List; 30 31 /** 32 * A generic JUnit test which tests creation (typically through a constructor or 33 * static factory method) of a set. Can't be invoked directly; please see 34 * {@link com.google.common.collect.testing.SetTestSuiteBuilder}. 35 * 36 * @author Chris Povirk 37 */ 38 @GwtCompatible 39 public class SetCreationTester<E> extends AbstractSetTester<E> { 40 @CollectionFeature.Require(value = ALLOWS_NULL_VALUES, 41 absent = REJECTS_DUPLICATES_AT_CREATION) 42 @CollectionSize.Require(absent = {ZERO, ONE}) testCreateWithDuplicates_nullDuplicatesNotRejected()43 public void testCreateWithDuplicates_nullDuplicatesNotRejected() { 44 E[] array = createArrayWithNullElement(); 45 array[0] = null; 46 collection = getSubjectGenerator().create(array); 47 48 List<E> expectedWithDuplicateRemoved = 49 Arrays.asList(array).subList(1, getNumElements()); 50 expectContents(expectedWithDuplicateRemoved); 51 } 52 53 @CollectionFeature.Require(absent = REJECTS_DUPLICATES_AT_CREATION) 54 @CollectionSize.Require(absent = {ZERO, ONE}) testCreateWithDuplicates_nonNullDuplicatesNotRejected()55 public void testCreateWithDuplicates_nonNullDuplicatesNotRejected() { 56 E[] array = createSamplesArray(); 57 array[1] = samples.e0; 58 collection = getSubjectGenerator().create(array); 59 60 List<E> expectedWithDuplicateRemoved = 61 Arrays.asList(array).subList(1, getNumElements()); 62 expectContents(expectedWithDuplicateRemoved); 63 } 64 65 @CollectionFeature.Require( 66 {ALLOWS_NULL_VALUES, REJECTS_DUPLICATES_AT_CREATION}) 67 @CollectionSize.Require(absent = {ZERO, ONE}) testCreateWithDuplicates_nullDuplicatesRejected()68 public void testCreateWithDuplicates_nullDuplicatesRejected() { 69 E[] array = createArrayWithNullElement(); 70 array[0] = null; 71 try { 72 collection = getSubjectGenerator().create(array); 73 fail("Should reject duplicate null elements at creation"); 74 } catch (IllegalArgumentException expected) { 75 } 76 } 77 78 @CollectionFeature.Require(REJECTS_DUPLICATES_AT_CREATION) 79 @CollectionSize.Require(absent = {ZERO, ONE}) testCreateWithDuplicates_nonNullDuplicatesRejected()80 public void testCreateWithDuplicates_nonNullDuplicatesRejected() { 81 E[] array = createSamplesArray(); 82 array[1] = samples.e0; 83 try { 84 collection = getSubjectGenerator().create(array); 85 fail("Should reject duplicate non-null elements at creation"); 86 } catch (IllegalArgumentException expected) { 87 } 88 } 89 } 90