TestEnumSetGenerator.java revision 3c77433663281544363151bf284b0240dfd22a42 
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
17package com.google.common.collect.testing;
18
19import com.google.common.annotations.GwtCompatible;
20import com.google.common.collect.testing.SampleElements.Enums;
21
22import java.util.Collections;
23import java.util.List;
24import java.util.Set;
25
26/**
27 * An abstract TestSetGenerator for generating sets containing enum values.
28 *
29 * <p>This class is GWT compatible.
30 *
31 * @author Kevin Bourrillion
32 */
33@GwtCompatible
34public abstract class TestEnumSetGenerator implements TestSetGenerator<AnEnum> {
35  @Override
36  public SampleElements<AnEnum> samples() {
37    return new Enums();
38  }
39
40  @Override
41  public Set<AnEnum> create(Object... elements) {
42    AnEnum[] array = new AnEnum[elements.length];
43    int i = 0;
44    for (Object e : elements) {
45      array[i++] = (AnEnum) e;
46    }
47    return create(array);
48  }
49
50  protected abstract Set<AnEnum> create(AnEnum[] elements);
51
52  @Override
53  public AnEnum[] createArray(int length) {
54    return new AnEnum[length];
55  }
56
57  /**
58   * Sorts the enums according to their natural ordering.
59   */
60  @Override
61  public List<AnEnum> order(List<AnEnum> insertionOrder) {
62    Collections.sort(insertionOrder);
63    return insertionOrder;
64  }
65}
66