TestCharacterListGenerator.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.Chars;
21
22import java.util.List;
23
24/**
25 * Generates {@code List<Character>} instances for test suites.
26 *
27 * <p>This class is GWT compatible.
28 *
29 * @author Kevin Bourrillion
30 * @author Louis Wasserman
31 */
32@GwtCompatible
33public abstract class TestCharacterListGenerator
34    implements TestListGenerator<Character> {
35  @Override
36  public SampleElements<Character> samples() {
37    return new Chars();
38  }
39
40  @Override
41  public List<Character> create(Object... elements) {
42    Character[] array = new Character[elements.length];
43    int i = 0;
44    for (Object e : elements) {
45      array[i++] = (Character) e;
46    }
47    return create(array);
48  }
49
50  /**
51   * Creates a new collection containing the given elements; implement this
52   * method instead of {@link #create(Object...)}.
53   */
54  protected abstract List<Character> create(Character[] elements);
55
56  @Override
57  public Character[] createArray(int length) {
58    return new Character[length];
59  }
60
61  /** Returns the original element list, unchanged. */
62  @Override
63  public List<Character> order(List<Character> insertionOrder) {
64    return insertionOrder;
65  }
66}
67