/*
* Copyright (c) 2006, 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 4181483
* @summary Test if DataInputStream methods will check if the stream
* has been closed.
*/
import java.io.*;
public enum OpsAfterClose {
READ { boolean check(DataInputStream is) {
try {
int read = is.read();
System.out.println("read returns: " + read);
} catch (IOException io) {
System.out.print("Excep Msg: "+ io.getMessage() + ", ");
return true;
}
return false;
} },
READ_BUF { boolean check(DataInputStream is) {
try {
byte buf[] = new byte[2];
int read = is.read(buf);
System.out.println("read(buf) returns: " + read);
} catch (IOException io) {
System.out.print("Excep Msg: "+ io.getMessage() + ", ");
return true;
}
return false;
} },
READ_BUF_OFF { boolean check(DataInputStream is) {
try {
byte buf[] = new byte[2];
int len = 1;
int read = is.read(buf, 0, len);
System.out.println("read(buf, 0, len) returns: " + read);
} catch (IOException io) {
System.out.print("Excep Msg: "+ io.getMessage() + ", ");
return true;
}
return false;
} },
AVAILABLE { boolean check(DataInputStream is) {
try {
int avail = is.available();
System.out.println("available() returns: " + avail);
return false;
} catch (IOException io) {
System.out.print("Excep Msg: "+ io.getMessage() + ", ");
return true;
}
} },
SKIP { boolean check(DataInputStream is) {
try {
long skipped = is.skip(1);
System.out.println("skip() returns: " + skipped);
} catch (IOException io) {
System.out.print("Excep Msg: "+ io.getMessage() + ", ");
return true;
}
return false;
} },
MARK { boolean check(DataInputStream is) {
is.mark(20);
return true;
} },
RESET { boolean check(DataInputStream is) {
try {
is.reset();
} catch (IOException io) {
System.out.print("Excep Msg: "+ io.getMessage() + ", ");
return true;
}
return false;
} },
MARK_SUPPORTED { boolean check(DataInputStream is) {
is.markSupported();
return true;
} },
CLOSE { boolean check(DataInputStream is) {
try {
is.close();
return true; // No Exception thrown on windows
} catch (IOException io) {
System.out.print("Excep Msg: "+ io.getMessage() + ", ");
return true; // Exception thrown on solaris and linux
}
}},
READ_BYTE { boolean check(DataInputStream is) {
try {
is.readByte();
} catch (IOException io) {
System.out.print("Excep Msg: "+ io.getMessage() + ", ");
return true;
}
return false;
} },
READ_CHAR { boolean check(DataInputStream is) {
try {
is.readChar();
} catch (IOException io) {
System.out.print("Excep Msg: "+ io.getMessage() + ", ");
return true;
}
return false;
} },
READ_DOUBLE { boolean check(DataInputStream is) {
try {
is.readDouble();
} catch (IOException io) {
System.out.print("Excep Msg: "+ io.getMessage() + ", ");
return true;
}
return false;
} },
READ_FLOAT { boolean check(DataInputStream is) {
try {
is.readFloat();
} catch (IOException io) {
System.out.print("Excep Msg: "+ io.getMessage() + ", ");
return true;
}
return false;
} },
READ_INT { boolean check(DataInputStream is) {
try {
is.readInt();
} catch (IOException io) {
System.out.print("Excep Msg: "+ io.getMessage() + ", ");
return true;
}
return false;
} },
READ_LONG { boolean check(DataInputStream is) {
try {
is.readLong();
} catch (IOException io) {
System.out.print("Excep Msg: "+ io.getMessage() + ", ");
return true;
}
return false;
} },
READ_SHORT { boolean check(DataInputStream is) {
try {
is.readShort();
} catch (IOException io) {
System.out.print("Excep Msg: "+ io.getMessage() + ", ");
return true;
}
return false;
} },
READ_UnsignedByte { boolean check(DataInputStream is) {
try {
is.readUnsignedByte();
} catch (IOException io) {
System.out.print("Excep Msg: "+ io.getMessage() + ", ");
return true;
}
return false;
} },
READ_UnsignedShort { boolean check(DataInputStream is) {
try {
is.readUnsignedShort();
} catch (IOException io) {
System.out.print("Excep Msg: "+ io.getMessage() + ", ");
return true;
}
return false;
} },
READ_UTF { boolean check(DataInputStream is) {
try {
is.readUTF();
} catch (IOException io) {
System.out.print("Excep Msg: "+ io.getMessage() + ", ");
return true;
}
return false;
} },
SKIP_BYTES { boolean check(DataInputStream is) {
try {
is.skipBytes(1);
} catch (IOException io) {
System.out.print("Excep Msg: "+ io.getMessage() + ", ");
return true;
}
return false;
} },
READ_FULLY { boolean check(DataInputStream is) {
try {
is.readFully(new byte[1]);
} catch (IOException io) {
System.out.print("Excep Msg: "+ io.getMessage() + ", ");
return true;
}
return false;
} },
READ_FULLY_BUF { boolean check(DataInputStream is) {
try {
is.readFully(new byte[1], 0, 1);
} catch (IOException io) {
System.out.print("Excep Msg: "+ io.getMessage() + ", ");
return true;
}
return false;
} };
abstract boolean check(DataInputStream is);
public static void main(String args[]) throws Exception {
boolean failed = false;
File f = new File(System.getProperty("test.dir", "."),
"f.txt");
f.createNewFile();
f.deleteOnExit();
FileInputStream fis = new FileInputStream(f);
DataInputStream dis = new DataInputStream(
new FileInputStream(f));
if (testDataInputStream(dis)) {
failed = true;
}
}
private static boolean testDataInputStream(DataInputStream is)
throws Exception {
is.close();
boolean failed = false;
boolean result;
System.out.println("Testing :" + is);
for (OpsAfterClose op : OpsAfterClose.values()) {
result = op.check(is);
if (!result) {
failed = true;
}
System.out.println(op + ":" + result);
}
if (failed) {
System.out.println("Test failed for the failed operation{s}" +
" above for :" + is);
}
return failed;
}
}