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/*
* Copyright (c) 2005, 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
* @summary it is new version of old test which was
* /src/share/test/serialization/subtest.java
* This test verifies of invocation
* annotateClass/replaceObject methods
*/
import java.io.*;
public class AnnotateClass {
public static void main (String argv[]) {
System.err.println("\nRegression test for verification " +
"of invocation annotateClass/replaceObject " +
"methods \n");
try {
FileOutputStream ostream = new FileOutputStream("subtest1.tmp");
try {
TestOutputStream p = new TestOutputStream(ostream);
p.writeObject(System.out);
p.writeObject(System.err);
p.writeObject(new PrintStream(ostream));
p.flush();
} finally {
ostream.close();
}
FileInputStream istream = new FileInputStream("subtest1.tmp");
try {
TestInputStream q = new TestInputStream(istream);
PrintStream out = (PrintStream)q.readObject();
PrintStream err = (PrintStream)q.readObject();
Object other = q.readObject();
if (out != System.out) {
System.err.println(
"\nTEST FAILED: System.out not read correctly");
throw new Error();
}
if (err != System.err) {
System.err.println(
"\nTEST FAILED: System.err not read correctly");
throw new Error();
}
if (other != null) {
System.err.println(
"\nTEST FAILED: Non-system PrintStream should have " +
"been written/read as null");
throw new Error();
}
} finally {
istream.close();
}
System.err.println("\nTEST PASSED");
} catch (Exception e) {
System.err.print("TEST FAILED: ");
e.printStackTrace();
throw new Error();
}
}
}
/** ObjectOutputStream is extended to test the annotateClass()
* and replaceObject() subclassable methods.
* In annotateClass a magic string is written to the stream
* so that it can be verified in ObjectInputStream.
* replaceObject is used to subsititute a handle object for
* one of the standard PrintStreams (stdout or stderr).
*/
class TestOutputStream extends ObjectOutputStream {
/* Construct a new test stream */
TestOutputStream(OutputStream out) throws IOException {
super(out);
enableReplaceObject(true);
}
/* When any class is written, add a "magic" string
* that must be verified by the TestInputStream.
*/
protected void annotateClass(Class cl) throws IOException {
this.writeUTF("magic");
}
/* For each object of type PrintStream, substitute
* a StdStream handle object that encodes which
* of the standard print streams is being written.
* Other objects are written as themselves.
*/
protected Object replaceObject(Object obj)
throws IOException
{
/* For PrintStreams, like stdout and stderr, encode */
if (obj instanceof PrintStream) {
return new StdStream((PrintStream)obj);
}
return obj;
}
}
/** Reverse the effects of TestOutputStream.
*/
class TestInputStream extends ObjectInputStream {
TestInputStream(InputStream in) throws IOException {
super(in);
enableResolveObject(true);
}
/** Verify that the magic string was written to the stream
* Also use the default classname->class resolution.
*/
protected Class<?> resolveClass(ObjectStreamClass classdesc)
throws ClassNotFoundException, IOException
{
try {
String s = readUTF();
if (!(s.equals("magic"))) {
System.err.println(
"\nTEST FAILED: Bad magic number");
throw new Error();
}
} catch (IOException ee) {
System.err.println(
"\nTEST FAILED: I/O Exception");
throw new Error();
}
return super.resolveClass(classdesc);
}
/** If the object in the stream is a StdStream,
* get the mapping of it to the local System printstream and
* return it.
* Other objects are returned as themselves.
*/
protected Object resolveObject(Object obj) {
if (obj instanceof StdStream) {
return ((StdStream)obj).getStream();
}
return obj;
}
}
/* A holder class to map between standard print streams (stdout, stderr)
* and a small integer.
*/
class StdStream implements java.io.Serializable {
private int stream = 0;
public StdStream(PrintStream s) {
if (s == System.out) {
stream = 1;
} else if (s == System.err) {
stream = 2;
}
}
public PrintStream getStream() {
if (stream == 1) {
return System.out;
} else if (stream == 2) {
return System.err;
} else {
return null;
}
}
}
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