001/* 002 * Copyright (C) 2009 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; 018 019import com.google.common.annotations.GwtCompatible; 020import com.google.common.collect.testing.SampleElements.Unhashables; 021import java.util.Collection; 022import java.util.List; 023 024/** 025 * Creates collections containing unhashable sample elements, to be tested. 026 * 027 * @author Regina O'Dell 028 */ 029@GwtCompatible 030public abstract class TestUnhashableCollectionGenerator<T extends Collection<UnhashableObject>> 031 implements TestCollectionGenerator<UnhashableObject> { 032 @Override 033 public SampleElements<UnhashableObject> samples() { 034 return new Unhashables(); 035 } 036 037 @Override 038 public T create(Object... elements) { 039 UnhashableObject[] array = createArray(elements.length); 040 int i = 0; 041 for (Object e : elements) { 042 array[i++] = (UnhashableObject) e; 043 } 044 return create(array); 045 } 046 047 /** 048 * Creates a new collection containing the given elements; implement this method instead of {@link 049 * #create(Object...)}. 050 */ 051 protected abstract T create(UnhashableObject[] elements); 052 053 @Override 054 public UnhashableObject[] createArray(int length) { 055 return new UnhashableObject[length]; 056 } 057 058 @Override 059 public Iterable<UnhashableObject> order(List<UnhashableObject> insertionOrder) { 060 return insertionOrder; 061 } 062}