/*
* Copyright (c) 1998, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @test
* @bug 4127657
* @summary Check for correct handling of parameters to
* XXXXReader.read(b, off, len).
*
*/
import java.io.*;
public class ReadParams {
static int values[] = {Integer.MIN_VALUE, -1, 0, 1, 4, 16, 31,
32, 33, Integer.MAX_VALUE};
static char b[][] = {null, new char[32]};
static void test(Reader rdr) throws Exception {
int i = 0, j = 0, k = 0;
boolean nullPtr = false, indexOutBnd = false;
for (i = 0; i < b.length; i++) {
for ( j = 0; j < values.length; j++) {
for ( k = 0; k < values.length; k++) {
nullPtr = (b[i] == null);
int bufLen = nullPtr ? 0 : b[i].length;
indexOutBnd = ((values[j] + values[k]) < 0)
||(values[j] < 0)
|| (values[j] > bufLen)
|| (values[k] < 0)
|| ((values[j] + values[k]) > bufLen);
try {
rdr.read(b[i], values[j], values[k]);
} catch (NullPointerException e) {
if (!nullPtr) {
throw new Exception
("should not throw NullPointerException" + i + " " +j + " " + k);
}
continue;
} catch (IndexOutOfBoundsException e) {
if (!indexOutBnd) {
throw new Exception
("should not throw IndexOutOfBoundsException");
}
continue;
}
if (nullPtr || indexOutBnd) {
throw new Exception("Should have thrown an exception");
}
}
}
}
}
public static void main(String args[]) throws Exception{
StringReader sr = new StringReader(new String(new byte[512]));
test(sr);
test(new BufferedReader(sr));
test(new CharArrayReader(new char[8]));
InputStreamReader ir = new InputStreamReader
(new ByteArrayInputStream(new byte[512]));
test(ir);
test(new PushbackReader(sr, 2));
PipedWriter pw = new PipedWriter();
PipedReader pir = new PipedReader(pw);
pw.write(new char[512], 0, 512);
test(pir);
}
}