gomp-20050608-branch/libjava/classpath/test/java.io/PushbackReaderTest.java

   1 /*************************************************************************
   2 /* PushbackReaderTest.java -- Tests PushbackReader's of course
   3 /*
   4 /* Copyright (c) 1998 Free Software Foundation, Inc.
   5 /* Written by Aaron M. Renn (arenn@urbanophile.com)
   6 /*
   7 /* This program is free software; you can redistribute it and/or modify
   8 /* it under the terms of the GNU General Public License as published
   9 /* by the Free Software Foundation, either version 2 of the License, or
  10 /* (at your option) any later version.
  11 /*
  12 /* This program is distributed in the hope that it will be useful, but
  13 /* WITHOUT ANY WARRANTY; without even the implied warranty of
  14 /* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 /* GNU General Public License for more details.
  16 /*
  17 /* You should have received a copy of the GNU General Public License
  18 /* along with this program; if not, write to the Free Software Foundation
  19 /* Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA
  20 /*************************************************************************/
  21
  22 import java.io.*;
  23
  24 public class PushbackReaderTest extends PushbackReader
  25 {
  26
  27 public
  28 PushbackReaderTest(Reader r, int size)
  29 {
  30   super(r, size);
  31 }
  32
  33 public static void
  34 main(String[] argv)
  35 {
  36   System.out.println("Started test of PushbackReader");
  37
  38   String str = "I used to idolize my older cousin Kurt.  I wanted to be\n" +
  39     "just like him when I was a kid.  (Now we are as different as night\n" +
  40     "and day - but still like each other).  One thing he did for a while\n" +
  41     "was set traps for foxes thinking he would make money off sellnig furs.\n" +
  42     "Now I never saw a fox in all my years of Southern Indiana.  That\n" +
  43     "didn't deter us.  One time we went out in the middle of winter to\n" +
  44     "check our traps.  It was freezing and I stepped onto a frozen over\n" +
  45     "stream. The ice broke and I got my foot soak.  Despite the fact that\n" +
  46     "it made me look like a girl, I turned around and went straight home.\n" +
  47     "Good thing too since I couldn't even feel my foot by the time I got\n" +
  48     "there.\n";
  49
  50   System.out.println("Test 1: Basic Unread Tests");
  51   try
  52     {
  53       PushbackReaderTest prt = new PushbackReaderTest(
  54         new StringReader(str), 15);
  55
  56       char[] read_buf1 = new char[12];
  57       char[] read_buf2 = new char[12];
  58
  59       boolean passed = true;
  60
  61       prt.read(read_buf1);
  62       prt.unread(read_buf1);
  63       prt.read(read_buf2);
  64
  65       for (int i = 0; i < read_buf1.length; i++)
  66         {
  67           if (read_buf1[i] != read_buf2[i])
  68             passed = false;
  69         }
  70
  71       prt.unread(read_buf2, 1, read_buf2.length - 1);
  72       prt.unread(read_buf2[0]);
  73
  74       int chars_read, total_read = 0;
  75       while ((chars_read = prt.read(read_buf1)) != -1)
  76         {
  77           System.out.print(new String(read_buf1, 0, chars_read));
  78           total_read += chars_read;
  79         }
  80
  81       if (total_read != str.length())
  82         passed = false;
  83
  84       if (passed)
  85         System.out.println("PASSED: Basic Unread Tests");
  86       else
  87         System.out.println("FAILED: Basic Unread Tests");
  88     }
  89   catch(IOException e)
  90     {
  91       System.out.println("FAILED: Basic Unread Tests: " + e);
  92     }
  93
  94   System.out.println("Test 3: Buffer Overflow Test");
  95   try
  96     {
  97       PushbackReaderTest prt = new PushbackReaderTest(
  98         new StringReader(str), 10);
  99
 100       char[] read_buf = new char[12];
 101
 102       prt.read(read_buf);
 103       prt.unread(read_buf);
 104       System.out.println("FAILED: Buffer Overflow Test");
 105     }
 106   catch(IOException e)
 107     {
 108       System.out.println("PASSED: Buffer Overflow Test: " + e);
 109     }
 110
 111   System.out.println("Finished tests of PushbackReader");
 112 } // main
 113
 114 } // class PushbackReaderTest
 115