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/*
* Copyright (c) 2006, 2010, 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 InputStream methods will check if the stream
* has been closed.
*/
import java.io.*;
public enum OpsAfterClose {
READ { boolean check(InputStream 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(InputStream 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(InputStream 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(InputStream 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(InputStream 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(InputStream is) {
is.mark(20);
return true;
} },
RESET { boolean check(InputStream is) {
try {
is.reset();
} catch (IOException io) {
System.out.print("Excep Msg: "+ io.getMessage() + ", ");
return true;
}
return false;
} },
MARK_SUPPORTED { boolean check(InputStream is) {
is.markSupported();
return true;
} },
CLOSE { boolean check(InputStream is) {
try {
is.close();
return true; // No Exception thrown on windows for FileInputStream
} catch (IOException io) {
System.out.print("Excep Msg: "+ io.getMessage() + ", ");
return true; // Exception thrown on solaris and linux for FileInputStream
}
} };
abstract boolean check(InputStream 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);
try {
if (testInputStream(fis)) {
failed = true;
}
if (testFileInputStream(fis)) {
failed = true;
}
} finally {
fis.close();
}
BufferedInputStream bs = new BufferedInputStream(
new FileInputStream(f));
try {
if (testInputStream(bs)) {
failed = true;
}
} finally {
bs.close();
}
DataInputStream dis = new DataInputStream(
new FileInputStream(f));
try {
if (testInputStream(dis)) {
failed = true;
}
} finally {
dis.close();
}
PushbackInputStream pbis = new PushbackInputStream(
new ByteArrayInputStream(new byte[20]));
if (testInputStream(pbis)) {
failed = true;
}
if (testPushbackInputStream(pbis)) {
failed = true;
}
PipedInputStream pis = new PipedInputStream(new PipedOutputStream());
if (testInputStream(pis)) {
failed = true;
}
/**
* The SequenceInputStream and ObjectInputStream does not throw IOException
SequenceInputStream sqis = new SequenceInputStream(
new FileInputStream(f),
new PipedInputStream(new PipedOutputStream())
);
if (testInputStream(sqis)) {
failed = true;
}
String serStr = "abc";
ObjectOutputStream oos = new ObjectOutputStream(
new FileOutputStream(f));
oos.writeObject(serStr);
oos.close();
ObjectInputStream ois = new ObjectInputStream(
new FileInputStream(f));
if (testInputStream(ois)) {
failed = true;
}
*/
if (failed) {
throw new Exception(
"Some Op for some Stream failed, check the failed status above");
}
}
private static boolean testInputStream(InputStream is)
throws Exception {
is.close();
boolean failed = false;
boolean result;
System.out.println("Testing :" + is);
for (OpsAfterClose op : OpsAfterClose.values()) {
if (op.equals(AVAILABLE) && (is instanceof PipedInputStream)) {
// skip the test as available() returns 0
continue;
}
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;
}
private static boolean testPushbackInputStream(PushbackInputStream pis)
throws Exception {
boolean failed = false;
try {
pis.unread(1);
System.out.println("Test failed for unread(int):" + pis);
failed = true;
} catch (IOException io) {
System.out.println("UNREAD(int):true");
}
byte buf[] = new byte[2];
try {
pis.unread(buf, 0, 2);
System.out.println("Test failed for unread(buf, offset, len):" +
pis);
failed = true;
} catch (IOException io) {
System.out.println("UNREAD(buf, offset, len):true");
}
try {
pis.unread(buf);
System.out.println("Test failed for unread(char[] buf):" + pis);
failed = true;
} catch (IOException io) {
System.out.println("UNREAD(buf):true");
}
return failed;
}
private static boolean testFileInputStream(FileInputStream fis)
throws Exception {
boolean failed = false;
try {
fis.getFD();
System.out.println("GetFD: true");
} catch (IOException io) {
System.out.println("GetFD: false");
failed = true;
}
fis.getChannel();
System.out.println("GetChannel: true");
return failed;
}
}
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