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.CollectionSize.ZERO; 21 22 import com.google.common.annotations.GwtCompatible; 23 import com.google.common.collect.testing.AbstractCollectionTester; 24 import com.google.common.collect.testing.features.CollectionFeature; 25 import com.google.common.collect.testing.features.CollectionSize; 26 27 /** 28 * A generic JUnit test which tests creation (typically through a constructor or 29 * static factory method) of a collection. Can't be invoked directly; please see 30 * {@link com.google.common.collect.testing.CollectionTestSuiteBuilder}. 31 * 32 * @author Chris Povirk 33 */ 34 @GwtCompatible(emulated = true) 35 public class CollectionCreationTester<E> extends AbstractCollectionTester<E> { 36 @CollectionFeature.Require(ALLOWS_NULL_VALUES) 37 @CollectionSize.Require(absent = ZERO) 38 public void testCreateWithNull_supported() { 39 E[] array = createArrayWithNullElement(); 40 collection = getSubjectGenerator().create(array); 41 expectContents(array); 42 } 43 44 @CollectionFeature.Require(absent = ALLOWS_NULL_VALUES) 45 @CollectionSize.Require(absent = ZERO) 46 public void testCreateWithNull_unsupported() { 47 E[] array = createArrayWithNullElement(); 48 49 try { 50 getSubjectGenerator().create(array); 51 fail("Creating a collection containing null should fail"); 52 } catch (NullPointerException expected) { 53 } 54 } 55 } 56 57
