1 /* 2 * Copyright (C) 2007 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.Ints; 21 22 import java.util.List; 23 import java.util.Set; 24 25 /** 26 * Create integer sets for collection tests. 27 * 28 * @author Gregory Kick 29 */ 30 @GwtCompatible 31 public abstract class TestIntegerSetGenerator implements TestSetGenerator<Integer> { 32 @Override public SampleElements<Integer> samples() { 33 return new Ints(); 34 } 35 36 @Override public Set<Integer> create(Object... elements) { 37 Integer[] array = new Integer[elements.length]; 38 int i = 0; 39 for (Object e : elements) { 40 array[i++] = (Integer) e; 41 } 42 return create(array); 43 } 44 45 protected abstract Set<Integer> create(Integer[] elements); 46 47 @Override public Integer[] createArray(int length) { 48 return new Integer[length]; 49 } 50 51 /** 52 * {@inheritDoc} 53 * 54 * <p>By default, returns the supplied elements in their given order; however, 55 * generators for containers with a known order other than insertion order 56 * must override this method. 57 * 58 * <p>Note: This default implementation is overkill (but valid) for an 59 * unordered container. An equally valid implementation for an unordered 60 * container is to throw an exception. The chosen implementation, however, has 61 * the advantage of working for insertion-ordered containers, as well. 62 */ 63 @Override public List<Integer> order(List<Integer> insertionOrder) { 64 return insertionOrder; 65 } 66 } 67
