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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one or more
3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * The ASF licenses this file to You under the Apache License, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License.  You may obtain a copy of the License at
8    *
9    *      http://www.apache.org/licenses/LICENSE-2.0
10   *
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the License for the specific language governing permissions and
15   * limitations under the License.
16   */
17  package org.apache.commons.io;
18  
19  import java.io.IOException;
20  import java.nio.channels.SelectionKey;
21  import java.nio.channels.Selector;
22  import java.nio.channels.spi.SelectorProvider;
23  import java.util.Set;
24  
25  /**
26   * Extends {@link Selector} with no-ops for testing.
27   */
28  public class SelectorAdapter extends Selector {
29  
30      @Override
31      public void close() throws IOException {
32      }
33  
34      @Override
35      public boolean isOpen() {
36          return false;
37      }
38  
39      @Override
40      public Set<SelectionKey> keys() {
41          return null;
42      }
43  
44      @Override
45      public SelectorProvider provider() {
46          return null;
47      }
48  
49      @Override
50      public int select() throws IOException {
51          return 0;
52      }
53  
54      @Override
55      public int select(final long timeout) throws IOException {
56          return 0;
57      }
58  
59      @Override
60      public Set<SelectionKey> selectedKeys() {
61          return null;
62      }
63  
64      @Override
65      public int selectNow() throws IOException {
66          return 0;
67      }
68  
69      @Override
70      public Selector wakeup() {
71          return null;
72      }
73  
74  }