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