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