1 /*
2  * Copyright (c) 1997, Oracle and/or its affiliates. All rights reserved.
3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4  *
5  * This code is free software; you can redistribute it and/or modify it
6  * under the terms of the GNU General Public License version 2 only, as
7  * published by the Free Software Foundation.
8  *
9  * This code is distributed in the hope that it will be useful, but WITHOUT
10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12  * version 2 for more details (a copy is included in the LICENSE file that
13  * accompanied this code).
14  *
15  * You should have received a copy of the GNU General Public License version
16  * 2 along with this work; if not, write to the Free Software Foundation,
17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18  *
19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20  * or visit www.oracle.com if you need additional information or have any
21  * questions.
22  */
23 
24 /* @test
25    @summary Stochastic test of LineNumberReader
26  */
27 
28 import java.io.*;
29 
30 
31 public class LineNumbers {
32 
33     static String enc = "UTF8";
34     static String inEnc;
35     static String outEnc;
36     static int limit = 500;
37 
main(String[] args)38     public static void main(String[] args) throws Exception {
39         PrintWriter log
40             = new PrintWriter(new OutputStreamWriter(System.err), true);
41 
42         if (inEnc == null)
43             inEnc = enc;
44         if (outEnc == null)
45             outEnc = enc;
46 
47         PipedOutputStream co = new PipedOutputStream();
48         PipedInputStream ci = new PipedInputStream(co);
49 
50         BufferedWriter w = new BufferedWriter(new OutputStreamWriter(co, outEnc));
51         LineNumberReader r = new LineNumberReader(new InputStreamReader(ci, inEnc));
52 
53         Thread t1 = new Thread(new RandomLineSource(w, limit));
54         Thread t2 = new Thread(new LineNumberSink(r, limit, log));
55         t1.start();
56         t2.start();
57         t1.join();
58         t2.join();
59     }
60 
61 }
62 
63 
64 class LineNumberSink implements Runnable {
65 
66     LineNumberReader r;
67     int limit;
68     PrintWriter log;
69 
LineNumberSink(LineNumberReader r, int limit, PrintWriter log)70     LineNumberSink(LineNumberReader r, int limit, PrintWriter log) {
71         this.r = r;
72         this.limit = limit;
73         this.log = log;
74     }
75 
run()76     public void run() {
77         String s;
78         int n = 0;
79 
80         try {
81             while ((s = r.readLine()) != null) {
82                 n++;
83                 int ln = r.getLineNumber();
84                 log.println("[" + ln + "] " + s.length());
85                 log.println(s);
86                 if (log.checkError())
87                     log.println("Conversion errors"); /* #### */
88                 if (n != ln)
89                     throw new RuntimeException("Line number mismatch: Expected " + n + ", got " + ln);
90             }
91             if (n != limit)
92                 throw new RuntimeException("Incorrect line count");
93         }
94         catch (IOException x) {
95             throw new RuntimeException(x.toString());
96         }
97         log.println(n + " lines read");
98     }
99 
100 }
101