--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/java/io/InputStream/Skip.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,126 @@
+/*
+ * Copyright 1997 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code 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
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+
+/* @test
+   @bug 4016710
+   @summary check for correct implementation of InputStream.skip
+   */
+
+import java.io.*;
+
+
+public class Skip{
+
+    private static void dotest(InputStream in , int curpos ,
+                               long total , long toskip , long expected)
+        throws Exception
+    {
+
+        try {
+
+            System.err.println("\n\nCurrently at pos = " + curpos +
+                               "\nTotal bytes in the Stream = " + total +
+                               "\nNumber of bytes to skip = " + toskip +
+                               "\nNumber of bytes that should be skipped = " +
+                               expected);
+
+            long skipped = in.skip(toskip);
+
+            System.err.println("actual number skipped: "+ skipped);
+
+            if ((skipped < 0) || (skipped > expected)) {
+                throw new RuntimeException("Unexpected number of bytes skipped");
+            }
+
+        } catch (IOException e) {
+            System.err.println("IOException is thrown - possible result");
+        } catch (Throwable e) {
+            throw new RuntimeException("Unexpected "+e+" is thrown!");
+        }
+
+    }
+
+    public static void main( String argv[] ) throws Exception {
+
+        MyInputStream in = new MyInputStream(11);
+
+        /* test for negative skip */
+        dotest(in,  0, 11, -23,  0);
+
+        /* check for skip beyond EOF starting from before EOF */
+        dotest(in,  0, 11,  20, 11);
+
+        /* check for skip after EOF */
+        dotest(in, -1, 11,  20,  0);
+
+        in = new MyInputStream(9000);
+        /* check for skip equal to the read chunk size in InputStream.java */
+        dotest(in,  0, 9000, 2048, 2048);
+
+        /* check for skip greater than the read chunk size in InputStream.java */
+        dotest(in, 2048, 9000, 5000, 5000);
+
+        /* check for skip beyond EOF starting from before EOF */
+        dotest(in, 7048, 9000, 5000, 1952);
+
+        in = new MyInputStream(5000);
+
+        /* check for multiple chunk reads */
+        dotest(in, 0, 5000, 6000, 5000);
+
+        /*
+         * check for skip larger than Integer.MAX_VALUE
+         * (Takes about 2 hrs on a sparc ultra-1)
+         * long total = (long)Integer.MAX_VALUE + (long)10;
+         * long toskip = total - (long)6;
+         * in = new MyInputStream(total);
+         * dotest(in, 0, total, toskip, toskip);
+         */
+
+    }
+
+}
+
+class MyInputStream extends InputStream {
+
+    private int readctr = 0;
+    private long endoffile;
+
+    public MyInputStream(long endoffile) {
+        this.endoffile = endoffile;
+    }
+
+    public int read() {
+
+        if (readctr == endoffile) {
+            return -1;
+        }
+        else {
+            readctr++;
+            return 0;
+        }
+    }
+
+    public int available() { return 0; }
+}