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Java > Open Source Codes > org > apache > tools > ant > taskdefs > DemuxOutputTask


1 /*
2  * Copyright 2002-2004 The Apache Software Foundation
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  *
16  */
17 package org.apache.tools.ant.taskdefs;
18
19 import org.apache.tools.ant.*;
20 import org.apache.tools.ant.BuildFileTest;
21 import java.util.Random JavaDoc;
22
23 /**
24  * A simple task that prints to System.out and System.err and then catches
25  * the output which it then checks. If the output does not match, an
26  * exception is thrown
27  *
28  * @since 1.5
29  * @created 21 February 2002
30  */
31 public class DemuxOutputTask extends Task {
32     private String JavaDoc randomOutValue;
33     private String JavaDoc randomErrValue;
34     private boolean outputReceived = false;
35     private boolean errorReceived = false;
36
37     public void execute() {
38         Random JavaDoc generator = new Random JavaDoc();
39         randomOutValue = "Output Value is " + generator.nextInt();
40         randomErrValue = "Error Value is " + generator.nextInt();
41
42         System.out.println(randomOutValue);
43         System.err.println(randomErrValue);
44         if (!outputReceived) {
45             throw new BuildException("Did not receive output");
46         }
47
48         if (!errorReceived) {
49             throw new BuildException("Did not receive error");
50         }
51     }
52
53     protected void handleOutput(String JavaDoc line) {
54         line = line.trim();
55         if (line.length() != 0 && !line.equals(randomOutValue)) {
56             String JavaDoc message = "Received = [" + line + "], expected = ["
57                 + randomOutValue + "]";
58             throw new BuildException(message);
59         }
60         outputReceived = true;
61     }
62
63     protected void handleErrorOutput(String JavaDoc line) {
64         line = line.trim();
65         if (line.length() != 0 && !line.equals(randomErrValue)) {
66             String JavaDoc message = "Received = [" + line + "], expected = ["
67                 + randomErrValue + "]";
68             throw new BuildException(message);
69         }
70         errorReceived = true;
71     }
72 }
73
74
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