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 protected void setUp() {
36 original = new ByteArrayOutputStream() {
37 public void close() {
38 closed = true;
39 }
40 };
41 shielded = new CloseShieldOutputStream(original);
42 closed = false;
43 }
44
45 /**
46 * Test the <code>close()</code> method.
47 */
48 public void testClose() throws IOException {
49 shielded.close();
50 assertFalse("closed", closed);
51 try {
52 shielded.write('x');
53 fail("write(b)");
54 } catch (IOException e) {
55 // expected
56 }
57 original.write('y');
58 assertEquals(1, original.size());
59 assertEquals('y', original.toByteArray()[0]);
60 }
61
62 }