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.test;
18
19 import static org.junit.jupiter.api.Assertions.fail;
20
21 import java.io.IOException;
22 import java.io.OutputStream;
23
24 import org.apache.commons.io.output.ProxyOutputStream;
25
26 /**
27 * Helper class for checking behavior of IO classes.
28 */
29 public class ThrowOnFlushAndCloseOutputStream extends ProxyOutputStream {
30
31 private boolean throwOnFlush;
32 private boolean throwOnClose;
33
34 /**
35 * @param proxy OutputStream to delegate to.
36 * @param throwOnFlush True if flush() is forbidden
37 * @param throwOnClose True if close() is forbidden
38 */
39 public ThrowOnFlushAndCloseOutputStream(final OutputStream proxy, final boolean throwOnFlush,
40 final boolean throwOnClose) {
41 super(proxy);
42 this.throwOnFlush = throwOnFlush;
43 this.throwOnClose = throwOnClose;
44 }
45
46 /** @see java.io.OutputStream#close() */
47 @Override
48 public void close() throws IOException {
49 if (throwOnClose) {
50 fail(getClass().getSimpleName() + ".close() called.");
51 }
52 super.close();
53 }
54
55 /** @see java.io.OutputStream#flush() */
56 @Override
57 public void flush() throws IOException {
58 if (throwOnFlush) {
59 fail(getClass().getSimpleName() + ".flush() called.");
60 }
61 super.flush();
62 }
63
64 public void off() {
65 throwOnFlush = false;
66 throwOnClose = false;
67 }
68
69 }