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.Enums;
21 import java.util.Collections;
22 import java.util.List;
23 import java.util.Set;
24
25 /**
26 * An abstract TestSetGenerator for generating sets containing enum values.
27 *
28 * @author Kevin Bourrillion
29 */
30 @GwtCompatible
31 public abstract class TestEnumSetGenerator implements TestSetGenerator<AnEnum> {
32 @Override
33 public SampleElements<AnEnum> samples() {
34 return new Enums();
35 }
36
37 @Override
38 public Set<AnEnum> create(Object... elements) {
39 AnEnum[] array = new AnEnum[elements.length];
40 int i = 0;
41 for (Object e : elements) {
42 array[i++] = (AnEnum) e;
43 }
44 return create(array);
45 }
46
47 protected abstract Set<AnEnum> create(AnEnum[] elements);
48
49 @Override
50 public AnEnum[] createArray(int length) {
51 return new AnEnum[length];
52 }
53
54 /** Sorts the enums according to their natural ordering. */
55 @Override
56 public List<AnEnum> order(List<AnEnum> insertionOrder) {
57 Collections.sort(insertionOrder);
58 return insertionOrder;
59 }
60 }