1/*
2 * Copyright (C) 2008 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.google;
18
19import com.google.common.annotations.GwtCompatible;
20import com.google.common.collect.Multiset;
21import com.google.common.collect.testing.AnEnum;
22import com.google.common.collect.testing.SampleElements;
23import com.google.common.collect.testing.SampleElements.Enums;
24
25import java.util.Collections;
26import java.util.List;
27
28/**
29 * An abstract {@code TestMultisetGenerator} for generating multisets containing
30 * enum values.
31 *
32 * @author Jared Levy
33 */
34@GwtCompatible
35public abstract class TestEnumMultisetGenerator
36    implements TestMultisetGenerator<AnEnum> {
37  @Override
38  public SampleElements<AnEnum> samples() {
39    return new Enums();
40  }
41
42  @Override
43  public Multiset<AnEnum> create(Object... elements) {
44    AnEnum[] array = new AnEnum[elements.length];
45    int i = 0;
46    for (Object e : elements) {
47      array[i++] = (AnEnum) e;
48    }
49    return create(array);
50  }
51
52  protected abstract Multiset<AnEnum> create(AnEnum[] elements);
53
54  @Override
55  public AnEnum[] createArray(int length) {
56    return new AnEnum[length];
57  }
58
59  /**
60   * Sorts the enums according to their natural ordering.
61   */
62  @Override
63  public List<AnEnum> order(List<AnEnum> insertionOrder) {
64    Collections.sort(insertionOrder);
65    return insertionOrder;
66  }
67}
68