1 /* 2 * Copyright (C) 2009 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; 18 19 import com.google.common.annotations.GwtCompatible; 20 import com.google.common.collect.testing.SampleElements.Unhashables; 21 22 import java.util.Collection; 23 import java.util.List; 24 25 /** 26 * Creates collections containing unhashable sample elements, to be tested. 27 * 28 * @author Regina O'Dell 29 */ 30 @GwtCompatible 31 public abstract class 32 TestUnhashableCollectionGenerator<T extends Collection<UnhashableObject>> 33 implements TestCollectionGenerator<UnhashableObject> { 34 @Override samples()35 public SampleElements<UnhashableObject> samples() { 36 return new Unhashables(); 37 } 38 39 @Override create(Object... elements)40 public T create(Object... elements) { 41 UnhashableObject[] array = createArray(elements.length); 42 int i = 0; 43 for (Object e : elements) { 44 array[i++] = (UnhashableObject) e; 45 } 46 return create(array); 47 } 48 49 /** 50 * Creates a new collection containing the given elements; implement this 51 * method instead of {@link #create(Object...)}. 52 */ create(UnhashableObject[] elements)53 protected abstract T create(UnhashableObject[] elements); 54 55 @Override createArray(int length)56 public UnhashableObject[] createArray(int length) { 57 return new UnhashableObject[length]; 58 } 59 60 @Override order( List<UnhashableObject> insertionOrder)61 public Iterable<UnhashableObject> order( 62 List<UnhashableObject> insertionOrder) { 63 return insertionOrder; 64 } 65 } 66