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libjava/classpath/test/java.io/BufferedReaderTest.java
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libjava/classpath/test/java.io/BufferedReaderTest.java
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/*************************************************************************
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/* BufferedReaderTest.java -- Tests BufferedReader's
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/*
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/* Copyright (c) 1998 Free Software Foundation, Inc.
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/* Written by Aaron M. Renn (arenn@urbanophile.com)
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/*
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/* This program is free software; you can redistribute it and/or modify
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/* it under the terms of the GNU General Public License as published
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/* by the Free Software Foundation, either version 2 of the License, or
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/* (at your option) any later version.
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/*
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/* This program is distributed in the hope that it will be useful, but
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/* WITHOUT ANY WARRANTY; without even the implied warranty of
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/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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/* GNU General Public License for more details.
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/*
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/* You should have received a copy of the GNU General Public License
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/* along with this program; if not, write to the Free Software Foundation
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/* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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/*************************************************************************/
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import java.io.*;
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public class BufferedReaderTest extends CharArrayReader
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{
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// Hehe. We override CharArrayReader.markSupported() in order to return
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// false so that we can test BufferedReader's handling of mark/reset in
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// both the case where the underlying stream does and does not support
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// mark/reset
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public boolean
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markSupported()
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{
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return(false);
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}
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public
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BufferedReaderTest(char[] buf)
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{
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super(buf);
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}
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public static int
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marktest(Reader ins) throws IOException
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{
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BufferedReader br = new BufferedReader(ins, 15);
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int chars_read;
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int total_read = 0;
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char[] buf = new char[12];
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chars_read = br.read(buf);
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total_read += chars_read;
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System.out.print(new String(buf, 0, chars_read));
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chars_read = br.read(buf);
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total_read += chars_read;
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System.out.print(new String(buf, 0, chars_read));
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br.mark(75);
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br.read();
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br.read(buf);
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br.read(buf);
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br.read(buf);
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br.reset();
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chars_read = br.read(buf);
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total_read += chars_read;
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System.out.print(new String(buf, 0, chars_read));
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br.mark(555);
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chars_read = br.read(buf);
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total_read += chars_read;
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System.out.print(new String(buf, 0, chars_read));
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br.reset();
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br.read(buf);
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chars_read = br.read(buf);
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total_read += chars_read;
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System.out.print(new String(buf, 0, chars_read));
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chars_read = br.read(buf);
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total_read += chars_read;
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System.out.print(new String(buf, 0, chars_read));
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br.mark(14);
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br.read(buf);
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br.reset();
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chars_read = br.read(buf);
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total_read += chars_read;
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System.out.print(new String(buf, 0, chars_read));
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while ((chars_read = br.read(buf)) != -1)
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{
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System.out.print(new String(buf, 0, chars_read));
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total_read += chars_read;
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}
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return(total_read);
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}
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public static void
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main(String[] argv)
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{
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System.out.println("Started test of BufferedReader");
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try
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{
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System.out.println("Test 1: Simple Read Test");
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String str = "My 5th grade teacher was named Mr. Thompson. Terry\n" +
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"George Thompson to be precise. He had these sideburns like\n" +
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"Isaac Asimov's, only uglier. One time he had a contest and said\n" +
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"that if any kid who could lift 50lbs worth of weights on a barbell\n" +
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"all the way over their head, he would shave it off. Nobody could\n" +
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"though. One time I guess I made a comment about how stupid his\n" +
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"sideburns worked and he not only kicked me out of class, he called\n" +
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"my mother. Jerk.\n";
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StringReader sr = new StringReader(str);
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BufferedReader br = new BufferedReader(sr, 15);
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char[] buf = new char[12];
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int chars_read;
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while((chars_read = br.read(buf)) != -1)
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System.out.print(new String(buf, 0, chars_read));
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br.close();
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System.out.println("PASSED: Simple Read Test");
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}
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catch (IOException e)
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{
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System.out.println("FAILED: Simple Read Test: " + e);
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}
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try
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{
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System.out.println("Test 2: First mark/reset Test");
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String str = "Growing up in a rural area brings such delights. One\n" +
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"time my uncle called me up and asked me to come over and help him\n" +
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"out with something. Since he lived right across the field, I\n" +
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"walked right over. Turned out he wanted me to come down to the\n" +
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"barn and help him castrate a calf. Oh, that was fun. Not.\n";
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StringReader sr = new StringReader(str);
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// BufferedReader br = new BufferedReader(sr);
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int total_read = marktest(sr);
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if (total_read == str.length())
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System.out.println("PASSED: First mark/reset Test");
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else
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System.out.println("FAILED: First mark/reset Test");
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}
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catch (IOException e)
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{
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System.out.println("FAILED: First mark/reset Test: " + e);
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}
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try
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{
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System.out.println("Test 3: Second mark/reset Test");
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String str = "Growing up we heated our house with a wood stove. That\n" +
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"thing could pump out some BTU's, let me tell you. No matter how\n" +
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"cold it got outside, it was always warm inside. Of course the\n" +
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"downside is that somebody had to chop the wood for the stove. That\n" +
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"somebody was me. I was slave labor. My uncle would go back and\n" +
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"chain saw up dead trees and I would load the wood in wagons and\n" +
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"split it with a maul. Somehow my no account brother always seemed\n" +
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"to get out of having to work.\n";
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char[] buf = new char[str.length()];
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str.getChars(0, str.length(), buf, 0);
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BufferedReaderTest brt = new BufferedReaderTest(buf);
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// BufferedReader br = new BufferedReader(car);
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int total_read = marktest(brt);
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if (total_read == str.length())
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System.out.println("PASSED: Second mark/reset Test");
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else
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System.out.println("FAILED: Second mark/reset Test");
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}
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catch (IOException e)
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{
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System.out.println("FAILED: Second mark/reset Test: " + e);
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}
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System.out.println("Finished test of BufferedReader");
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} // main
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} // class BufferedReaderTest
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