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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.testtools;
18  
19  import java.io.IOException;
20  import java.io.InputStream;
21  
22  import junit.framework.AssertionFailedError;
23  
24  import org.apache.commons.io.input.ProxyInputStream;
25  
26  /**
27   * Helper class for checking behaviour of IO classes.
28   */
29  public class YellOnCloseInputStream extends ProxyInputStream {
30  
31      /**
32       * @param proxy InputStream to delegate to.
33       */
34      public YellOnCloseInputStream(final InputStream proxy) {
35          super(proxy);
36      }
37  
38      /** @see java.io.InputStream#close() */
39      @Override
40      public void close() throws IOException {
41          throw new AssertionFailedError("close() was called on OutputStream");
42      }
43  
44  }