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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.output;
18  
19  import java.io.IOException;
20  import java.io.OutputStream;
21  
22  import junit.framework.TestCase;
23  
24  /**
25   * JUnit Test Case for {@link CloseShieldOutputStream}.
26   */
27  public class CloseShieldOutputStreamTest extends TestCase {
28  
29      private ByteArrayOutputStream original;
30  
31      private OutputStream shielded;
32  
33      private boolean closed;
34  
35      @Override
36      protected void setUp() {
37          original = new ByteArrayOutputStream() {
38              @Override
39              public void close() {
40                  closed = true;
41              }
42          };
43          shielded = new CloseShieldOutputStream(original);
44          closed = false;
45      }
46  
47      /**
48       * Test the <code>close()</code> method.
49       */
50      public void testClose() throws IOException {
51          shielded.close();
52          assertFalse("closed", closed);
53          try {
54              shielded.write('x');
55              fail("write(b)");
56          } catch (final IOException e) {
57              // expected
58          }
59          original.write('y');
60          assertEquals(1, original.size());
61          assertEquals('y', original.toByteArray()[0]);
62      }
63  
64  }