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.Chars;
21
22import java.util.List;
23
24/**
25 * Generates {@code List<Character>} instances for test suites.
26 *
27 * @author Kevin Bourrillion
28 * @author Louis Wasserman
29 */
30@GwtCompatible
31public abstract class TestCharacterListGenerator
32    implements TestListGenerator<Character> {
33  @Override
34  public SampleElements<Character> samples() {
35    return new Chars();
36  }
37
38  @Override
39  public List<Character> create(Object... elements) {
40    Character[] array = new Character[elements.length];
41    int i = 0;
42    for (Object e : elements) {
43      array[i++] = (Character) e;
44    }
45    return create(array);
46  }
47
48  /**
49   * Creates a new collection containing the given elements; implement this
50   * method instead of {@link #create(Object...)}.
51   */
52  protected abstract List<Character> create(Character[] elements);
53
54  @Override
55  public Character[] createArray(int length) {
56    return new Character[length];
57  }
58
59  /** Returns the original element list, unchanged. */
60  @Override
61  public List<Character> order(List<Character> insertionOrder) {
62    return insertionOrder;
63  }
64}
65