1 files changed, 133 insertions, 0 deletions
diff --git a/libjava/classpath/test/java.io/PushbackInputStreamTest.java b/libjava/classpath/test/java.io/PushbackInputStreamTest.java
new file mode 100644
index 00000000000..9d67623fe64
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+++ b/libjava/classpath/test/java.io/PushbackInputStreamTest.java
@@ -0,0 +1,133 @@
+/*************************************************************************
+/* PushbackInputStreamTest.java -- Tests PushbackInputStream's of course
+/*
+/* Copyright (c) 1998 Free Software Foundation, Inc.
+/* Written by Aaron M. Renn (arenn@urbanophile.com)
+/*
+/* This program is free software; you can redistribute it and/or modify
+/* it under the terms of the GNU General Public License as published 
+/* by the Free Software Foundation, either version 2 of the License, or
+/* (at your option) any later version.
+/*
+/* This program is distributed in the hope that it will be useful, but
+/* WITHOUT ANY WARRANTY; without even the implied warranty of
+/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+/* GNU General Public License for more details.
+/*
+/* You should have received a copy of the GNU General Public License
+/* along with this program; if not, write to the Free Software Foundation
+/* Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA
+/*************************************************************************/
+
+import java.io.*;
+
+public class PushbackInputStreamTest extends PushbackInputStream
+{
+
+public
+PushbackInputStreamTest(InputStream is, int size)
+{
+  super(is, size);
+}
+
+public static void
+main(String[] argv)
+{
+  System.out.println("Started test of PushbackInputStream");
+
+  String str = "Once when I was in fourth grade, my friend Lloyd\n" +
+    "Saltsgaver and I got in trouble for kicking a bunch of\n" +
+    "Kindergartners off the horse swings so we could play a game\n" +
+    "of 'road hog'\n";
+
+  System.out.println("Test 1: Protected Variables Test");
+  {
+  PushbackInputStreamTest pist = new PushbackInputStreamTest(
+    new StringBufferInputStream(str), 15);
+
+  boolean passed = true;
+  if (pist.pos != pist.buf.length)
+    {
+       passed = false;
+       System.out.println("The pos variable is wrong.  Expected " +
+             pist.buf.length + " but got " + pist.pos);
+    }
+  if (pist.buf.length != 15)
+    {
+       passed = false;
+       System.out.println("The buf.length is wrong.  Expected 15" +
+             " but got " + pist.buf.length);
+    }
+
+   if (passed)
+     System.out.println("PASSED: Protected Variables Test");
+   else
+     System.out.println("FAILED: Protected Variables Test");
+  }
+  
+  System.out.println("Test 2: Basic Unread Tests");
+  try
+    {
+      PushbackInputStreamTest pist = new PushbackInputStreamTest(
+        new StringBufferInputStream(str), 15);
+
+      byte[] read_buf1 = new byte[12]; 
+      byte[] read_buf2 = new byte[12]; 
+      
+      boolean passed = true;
+
+      pist.read(read_buf1); 
+      pist.unread(read_buf1);
+      pist.read(read_buf2);
+      
+      for (int i = 0; i < read_buf1.length; i++)
+        {
+          if (read_buf1[i] != read_buf2[i])
+            passed = false;
+        }
+
+      pist.unread(read_buf2, 1, read_buf2.length - 1);      
+      pist.unread(read_buf2[0]);
+
+      int bytes_read, total_read = 0;
+      while ((bytes_read = pist.read(read_buf1)) != -1)
+        {
+          System.out.print(new String(read_buf1, 0, bytes_read));
+          total_read += bytes_read;
+        }
+
+      if (total_read != str.length())
+        passed = false;
+
+      if (passed)
+        System.out.println("PASSED: Basic Unread Tests");
+      else
+        System.out.println("FAILED: Basic Unread Tests");
+    }
+  catch(IOException e)
+    {
+      System.out.println("FAILED: Basic Unread Tests: " + e);
+    }
+
+  System.out.println("Test 3: Buffer Overflow Test");
+  try
+    {
+      PushbackInputStreamTest pist = new PushbackInputStreamTest(
+        new StringBufferInputStream(str), 10);
+
+      byte[] read_buf = new byte[12]; 
+
+      pist.read(read_buf);
+      pist.unread(read_buf);
+      System.out.println("FAILED: Buffer Overflow Test");
+    }
+  catch(IOException e)
+    {
+      System.out.println("PASSED: Buffer Overflow Test: " + e);
+    }
+  
+  System.out.println("Finished tests of PushbackInputStream");
+} // main
+
+} // class PushbackInputStreamTest
+