test/java/rmi/testlibrary/TestLibrary.java - platform/external/jetbrains/jdk8u_jdk - Git at Google

 /*
  * Copyright (c) 1998, 2013, 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.
  */

 /**
  *
  *
  * @author Adrian Colley
  * @author Laird Dornin
  * @author Peter Jones
  * @author Ann Wollrath
  *
  * The rmi library directory contains a set of simple utiltity classes
  * for use in rmi regression tests.
  *
  * NOTE: The JavaTest group has recommended that regression tests do
  * not make use of packages.
  */

 import java.io.ByteArrayOutputStream;
 import java.io.File;
 import java.io.FileInputStream;
 import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.PrintStream;
 import java.net.MalformedURLException;
 import java.net.ServerSocket;
 import java.net.URL;
 import java.rmi.NoSuchObjectException;
 import java.rmi.Remote;
 import java.rmi.RemoteException;
 import java.rmi.registry.LocateRegistry;
 import java.rmi.registry.Registry;
 import java.rmi.server.RemoteRef;
 import java.rmi.server.UnicastRemoteObject;
 import java.util.Enumeration;
 import java.util.Properties;

 import sun.rmi.registry.RegistryImpl;
 import sun.rmi.server.UnicastServerRef;
 import sun.rmi.transport.Endpoint;
 import sun.rmi.transport.LiveRef;
 import sun.rmi.transport.tcp.TCPEndpoint;

 /**
  * Class of utility/library methods (i.e. procedures) that assist with
  * the writing and maintainance of rmi regression tests.
  */
 public class TestLibrary {
     /**
      *                       IMPORTANT!
      *
      * RMI tests are run concurrently and port conflicts result when a single
      * port number is used by multiple tests.  When needing a port, use
      * getUnusedRandomPort() wherever possible.  If getUnusedRandomPort() cannot
      * be used, reserve and specify a port to use for your test here.   This
      * will ensure there are no port conflicts amongst the RMI tests.  The
      * port numbers specified here may also be specified in the respective
      * tests.  Do not change the reserved port numbers here without also
      * changing the port numbers in the respective tests.
      *
      * When needing an instance of the RMIRegistry, use
      * createRegistryOnUnusedPort wherever possible to prevent port conflicts.
      *
      * Reserved port range: FIXED_PORT_MIN to FIXED_PORT_MAX (inclusive) for
      * tests which cannot use a random port.  If new fixed ports are added below
      * FIXED_PORT_MIN or above FIXED_PORT_MAX, then adjust
      * FIXED_PORT_MIN/MAX appropriately.
      */
     public final static int FIXED_PORT_MIN = 60001;
     public final static int FIXED_PORT_MAX = 60010;
     public final static int RMIDVIAINHERITEDCHANNEL_ACTIVATION_PORT = 60001;
     public final static int RMIDVIAINHERITEDCHANNEL_REGISTRY_PORT = 60002;
     public final static int INHERITEDCHANNELNOTSERVERSOCKET_ACTIVATION_PORT = 60003;
     public final static int INHERITEDCHANNELNOTSERVERSOCKET_REGISTRY_PORT = 60004;
     public final static int READTEST_REGISTRY_PORT = 60005;
     private final static int MAX_SERVER_SOCKET_TRIES = 2*(FIXED_PORT_MAX-FIXED_PORT_MIN+1);

     static void mesg(Object mesg) {
         System.err.println("TEST_LIBRARY: " + mesg.toString());
     }

     /**
      * Routines that enable rmi tests to fail in a uniformly
      * informative fashion.
      */
     public static void bomb(String message, Exception e) {
         String testFailed = "TEST FAILED: ";

         if ((message == null) && (e == null)) {
             testFailed += " No relevant information";
         } else if (e == null) {
             testFailed += message;
         }

         System.err.println(testFailed);
         if (e != null) {
             System.err.println("Test failed with: " +
                                e.getMessage());
             e.printStackTrace(System.err);
         }
         throw new TestFailedException(testFailed, e);
     }
     public static void bomb(String message) {
         bomb(message, null);
     }
     public static void bomb(Exception e) {
         bomb(null, e);
     }

     /**
      * Helper method to determine if registry has started
      *
      * @param port The port number to check
      * @param msTimeout The amount of milliseconds to spend checking
      */

     public static boolean checkIfRegistryRunning(int port, int msTimeout) {
         long stopTime = System.currentTimeMillis() + msTimeout;
         do {
             try {
                 Registry r = LocateRegistry.getRegistry(port);
                 String[] s = r.list();
                 // no exception. We're now happy that registry is running
                 return true;
             } catch (RemoteException e) {
                 // problem - not ready ? Try again
                 try {
                     Thread.sleep(500);
                 } catch (InterruptedException ie) {
                     // not expected
                 }
             }
         } while (stopTime > System.currentTimeMillis());
         return false;
     }

     public static String getProperty(String property, String defaultVal) {
         final String prop = property;
         final String def = defaultVal;
         return java.security.AccessController.doPrivileged(
             new java.security.PrivilegedAction<String>() {
                 public String run() {
                     return System.getProperty(prop, def);
                 }
             });
     }

     /**
      * Property mutators
      */
     public static void setBoolean(String property, boolean value) {
         setProperty(property, (new Boolean(value)).toString());
     }
     public static void setInteger(String property, int value) {
         setProperty(property, Integer.toString(value));
     }
     public static void setProperty(String property, String value) {
         final String prop = property;
         final String val = value;
         java.security.AccessController.doPrivileged(
             new java.security.PrivilegedAction<Void>() {
                 public Void run() {
                     System.setProperty(prop, val);
                     return null;
                 }
         });
     }

     /**
      * Routines to print out a test's properties environment.
      */
     public static void printEnvironment() {
         printEnvironment(System.err);
     }
     public static void printEnvironment(PrintStream out) {
         out.println("-------------------Test environment----------" +
                     "---------");

         for(Enumeration<?> keys = System.getProperties().keys();
             keys.hasMoreElements();) {

             String property = (String) keys.nextElement();
             out.println(property + " = " + getProperty(property, null));
         }
         out.println("---------------------------------------------" +
                     "---------");
     }

     /**
      * Routine that "works-around" a limitation in jtreg.
      * Currently it is not possible for a test to specify that the
      * test harness should build a given source file and install the
      * resulting class in a location that is not accessible from the
      * test's classpath.  This method enables a test to move a
      * compiled test class file from the test's class directory into a
      * given "codebase" directory.  As a result the test can only
      * access the class file for <code>className</code>if the test loads
      * it from a classloader (e.g. RMIClassLoader).
      *
      * Tests that use this routine must have the following permissions
      * granted to them:
      *
      *   getProperty user.dir
      *   getProperty etc.
      */
     public static URL installClassInCodebase(String className,
                                              String codebase)
         throws MalformedURLException
     {
         return installClassInCodebase(className, codebase, true);
     }

     public static URL installClassInCodebase(String className,
                                              String codebase,
                                              boolean delete)
         throws MalformedURLException
     {
         /*
          * NOTES/LIMITATIONS: The class must not be in a named package,
          * and the codebase must be a relative path (it's created relative
          * to the working directory).
          */
         String classFileName = className + ".class";

         /*
          * Specify the file to contain the class definition.  Make sure
          * that the codebase directory exists (underneath the working
          * directory).
          */
         File dstDir = (new File(getProperty("user.dir", "."), codebase));

         if (!dstDir.exists()) {
             if (!dstDir.mkdir()) {
                 throw new RuntimeException(
                     "could not create codebase directory");
             }
         }
         File dstFile = new File(dstDir, classFileName);

         /*
          * Obtain the URL for the codebase.
          */
         URL codebaseURL = dstDir.toURI().toURL();

         /*
          * Specify where we will copy the class definition from, if
          * necessary.  After the test is built, the class file can be
          * found in the "test.classes" directory.
          */
         File srcDir = new File(getProperty("test.classes", "."));
         File srcFile = new File(srcDir, classFileName);

         mesg(srcFile);
         mesg(dstFile);

         /*
          * If the class definition is not already located at the codebase,
          * copy it there from the test build area.
          */
         if (!dstFile.exists()) {
             if (!srcFile.exists()) {
                 throw new RuntimeException(
                     "could not find class file to install in codebase " +
                     "(try rebuilding the test): " + srcFile);
             }

             try {
                 copyFile(srcFile, dstFile);
             } catch (IOException e) {
                 throw new RuntimeException(
                     "could not install class file in codebase");
             }

             mesg("Installed class \"" + className +
                 "\" in codebase " + codebaseURL);
         }

         /*
          * After the class definition is successfully installed at the
          * codebase, delete it from the test's CLASSPATH, so that it will
          * not be found there first before the codebase is searched.
          */
         if (srcFile.exists()) {
             if (delete && !srcFile.delete()) {
                 throw new RuntimeException(
                     "could not delete duplicate class file in CLASSPATH");
             }
         }

         return codebaseURL;
     }

     public static void copyFile(File srcFile, File dstFile)
         throws IOException
     {
         FileInputStream src = new FileInputStream(srcFile);
         FileOutputStream dst = new FileOutputStream(dstFile);

         byte[] buf = new byte[32768];
         while (true) {
             int count = src.read(buf);
             if (count < 0) {
                 break;
             }
             dst.write(buf, 0, count);
         }

         dst.close();
         src.close();
     }

     /** routine to unexport an object */
     public static void unexport(Remote obj) {
         if (obj != null) {
             try {
                 mesg("unexporting object...");
                 UnicastRemoteObject.unexportObject(obj, true);
             } catch (NoSuchObjectException munch) {
             } catch (Exception e) {
                 e.getMessage();
                 e.printStackTrace();
             }
         }
     }

     /**
      * Allow test framework to control the security manager set in
      * each test.
      *
      * @param managerClassName The class name of the security manager
      *                         to be instantiated and set if no security
      *                         manager has already been set.
      */
     public static void suggestSecurityManager(String managerClassName) {
         SecurityManager manager = null;

         if (System.getSecurityManager() == null) {
             try {
                 if (managerClassName == null) {
                     managerClassName = TestParams.defaultSecurityManager;
                 }
                 manager = ((SecurityManager) Class.
                            forName(managerClassName).newInstance());
             } catch (ClassNotFoundException cnfe) {
                 bomb("Security manager could not be found: " +
                      managerClassName, cnfe);
             } catch (Exception e) {
                 bomb("Error creating security manager. ", e);
             }

             System.setSecurityManager(manager);
         }
     }

     /**
      * Creates an RMI {@link Registry} on a random, un-reserved port.
      *
      * @returns an RMI Registry, using a random port.
      * @throws RemoteException if there was a problem creating a Registry.
      */
     public static Registry createRegistryOnUnusedPort() throws RemoteException {
         return LocateRegistry.createRegistry(getUnusedRandomPort());
     }

     /**
      * Creates an RMI {@link Registry} on an ephemeral port.
      *
      * @returns an RMI Registry
      * @throws RemoteException if there was a problem creating a Registry.
      */
     public static Registry createRegistryOnEphemeralPort() throws RemoteException {
         return LocateRegistry.createRegistry(0);
     }

     /**
      * Returns the port number the RMI {@link Registry} is running on.
      *
      * @param registry the registry to find the port of.
      * @return the port number the registry is using.
      * @throws RuntimeException if there was a problem getting the port number.
      */
     public static int getRegistryPort(Registry registry) {
         int port = -1;

         try {
             RemoteRef remoteRef = ((RegistryImpl)registry).getRef();
             LiveRef liveRef = ((UnicastServerRef)remoteRef).getLiveRef();
             Endpoint endpoint = liveRef.getChannel().getEndpoint();
             TCPEndpoint tcpEndpoint = (TCPEndpoint) endpoint;
             port = tcpEndpoint.getPort();
         } catch (Exception ex) {
             throw new RuntimeException("Error getting registry port.", ex);
         }

         return port;
     }

     /**
      * Returns an unused random port number which is not a reserved port.  Will
      * try up to 10 times to get a random port before giving up and throwing a
      * RuntimeException.
      *
      * @return an unused random port number.
      * @throws RuntimeException if there was a problem getting a port.
      */
     public static int getUnusedRandomPort() {
         int numTries = 0;
         IOException ex = null;

         while (numTries++ < MAX_SERVER_SOCKET_TRIES) {
             int unusedRandomPort = -1;
             ex = null; //reset

             try (ServerSocket ss = new ServerSocket(0)) {
                 unusedRandomPort = ss.getLocalPort();
             } catch (IOException e) {
                 ex = e;
                 // temporarily print stack trace here until we find out why
                 // tests are failing.
                 System.err.println("TestLibrary.getUnusedRandomPort() caught "
                         + "exception on iteration " + numTries
                         + (numTries==MAX_SERVER_SOCKET_TRIES ? " (the final try)."
                         : "."));
                 ex.printStackTrace();
             }

             if (unusedRandomPort >= 0) {
                 if (isReservedPort(unusedRandomPort)) {
                     System.out.println("INFO: On try # " + numTries
                         + (numTries==MAX_SERVER_SOCKET_TRIES ? ", the final try, ": ",")
                         + " ServerSocket(0) returned the reserved port "
                         + unusedRandomPort
                         + " in TestLibrary.getUnusedRandomPort() ");
                 } else {
                     return unusedRandomPort;
                 }
             }
         }

         // If we're here, then either an exception was thrown or the port is
         // a reserved port.
         if (ex==null) {
             throw new RuntimeException("Error getting unused random port. The"
                     +" last port returned by ServerSocket(0) was a reserved port");
         } else {
             throw new RuntimeException("Error getting unused random port.", ex);
         }
     }

     /**
      * Determines if a port is one of the reserved port numbers.
      *
      * @param port the port to test.
      * @return {@code true} if the port is a reserved port, otherwise
      *         {@code false}.
      */
     public static boolean isReservedPort(int port) {
         return ((port >= FIXED_PORT_MIN) && (port <= FIXED_PORT_MAX) ||
                 (port == 1099));
     }

     /**
      * Method to capture the stack trace of an exception and return it
      * as a string.
      */
     public String stackTraceToString(Exception e) {
         ByteArrayOutputStream bos = new ByteArrayOutputStream();
         PrintStream ps = new PrintStream(bos);

         e.printStackTrace(ps);
         return bos.toString();
     }

     /** extra properties */
     private static Properties props;

     /**
      * Returns extra test properties. Looks for the file "../../test.props"
      * and reads it in as a Properties file. Assuming the working directory
      * is "<path>/JTwork/scratch", this will find "<path>/test.props".
      */
     private static synchronized Properties getExtraProperties() {
         if (props != null) {
             return props;
         }
         props = new Properties();
         File f = new File(".." + File.separator + ".." + File.separator +
                           "test.props");
         if (!f.exists()) {
             return props;
         }
         try {
             FileInputStream in = new FileInputStream(f);
             try {
                 props.load(in);
             } finally {
                 in.close();
             }
         } catch (IOException e) {
             e.printStackTrace();
             throw new RuntimeException("extra property setup failed", e);
         }
         return props;
     }

     /**
      * Returns an extra test property. Looks for the file "../../test.props"
      * and reads it in as a Properties file. Assuming the working directory
      * is "<path>/JTwork/scratch", this will find "<path>/test.props".
      * If the property isn't found, defaultVal is returned.
      */
     public static String getExtraProperty(String property, String defaultVal) {
         return getExtraProperties().getProperty(property, defaultVal);
     }
 }
	/*
	* Copyright (c) 1998, 2013, 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.
	*/

	/**
	*
	*
	* @author Adrian Colley
	* @author Laird Dornin
	* @author Peter Jones
	* @author Ann Wollrath
	*
	* The rmi library directory contains a set of simple utiltity classes
	* for use in rmi regression tests.
	*
	* NOTE: The JavaTest group has recommended that regression tests do
	* not make use of packages.
	*/

	import java.io.ByteArrayOutputStream;
	import java.io.File;
	import java.io.FileInputStream;
	import java.io.FileOutputStream;
	import java.io.IOException;
	import java.io.PrintStream;
	import java.net.MalformedURLException;
	import java.net.ServerSocket;
	import java.net.URL;
	import java.rmi.NoSuchObjectException;
	import java.rmi.Remote;
	import java.rmi.RemoteException;
	import java.rmi.registry.LocateRegistry;
	import java.rmi.registry.Registry;
	import java.rmi.server.RemoteRef;
	import java.rmi.server.UnicastRemoteObject;
	import java.util.Enumeration;
	import java.util.Properties;

	import sun.rmi.registry.RegistryImpl;
	import sun.rmi.server.UnicastServerRef;
	import sun.rmi.transport.Endpoint;
	import sun.rmi.transport.LiveRef;
	import sun.rmi.transport.tcp.TCPEndpoint;

	/**
	* Class of utility/library methods (i.e. procedures) that assist with
	* the writing and maintainance of rmi regression tests.
	*/
	public class TestLibrary {
	/**
	* IMPORTANT!
	*
	* RMI tests are run concurrently and port conflicts result when a single
	* port number is used by multiple tests. When needing a port, use
	* getUnusedRandomPort() wherever possible. If getUnusedRandomPort() cannot
	* be used, reserve and specify a port to use for your test here. This
	* will ensure there are no port conflicts amongst the RMI tests. The
	* port numbers specified here may also be specified in the respective
	* tests. Do not change the reserved port numbers here without also
	* changing the port numbers in the respective tests.
	*
	* When needing an instance of the RMIRegistry, use
	* createRegistryOnUnusedPort wherever possible to prevent port conflicts.
	*
	* Reserved port range: FIXED_PORT_MIN to FIXED_PORT_MAX (inclusive) for
	* tests which cannot use a random port. If new fixed ports are added below
	* FIXED_PORT_MIN or above FIXED_PORT_MAX, then adjust
	* FIXED_PORT_MIN/MAX appropriately.
	*/
	public final static int FIXED_PORT_MIN = 60001;
	public final static int FIXED_PORT_MAX = 60010;
	public final static int RMIDVIAINHERITEDCHANNEL_ACTIVATION_PORT = 60001;
	public final static int RMIDVIAINHERITEDCHANNEL_REGISTRY_PORT = 60002;
	public final static int INHERITEDCHANNELNOTSERVERSOCKET_ACTIVATION_PORT = 60003;
	public final static int INHERITEDCHANNELNOTSERVERSOCKET_REGISTRY_PORT = 60004;
	public final static int READTEST_REGISTRY_PORT = 60005;
	private final static int MAX_SERVER_SOCKET_TRIES = 2*(FIXED_PORT_MAX-FIXED_PORT_MIN+1);

	static void mesg(Object mesg) {
	System.err.println("TEST_LIBRARY: " + mesg.toString());
	}

	/**
	* Routines that enable rmi tests to fail in a uniformly
	* informative fashion.
	*/
	public static void bomb(String message, Exception e) {
	String testFailed = "TEST FAILED: ";

	if ((message == null) && (e == null)) {
	testFailed += " No relevant information";
	} else if (e == null) {
	testFailed += message;
	}

	System.err.println(testFailed);
	if (e != null) {
	System.err.println("Test failed with: " +
	e.getMessage());
	e.printStackTrace(System.err);
	}
	throw new TestFailedException(testFailed, e);
	}
	public static void bomb(String message) {
	bomb(message, null);
	}
	public static void bomb(Exception e) {
	bomb(null, e);
	}

	/**
	* Helper method to determine if registry has started
	*
	* @param port The port number to check
	* @param msTimeout The amount of milliseconds to spend checking
	*/

	public static boolean checkIfRegistryRunning(int port, int msTimeout) {
	long stopTime = System.currentTimeMillis() + msTimeout;
	do {
	try {
	Registry r = LocateRegistry.getRegistry(port);
	String[] s = r.list();
	// no exception. We're now happy that registry is running
	return true;
	} catch (RemoteException e) {
	// problem - not ready ? Try again
	try {
	Thread.sleep(500);
	} catch (InterruptedException ie) {
	// not expected
	}
	}
	} while (stopTime > System.currentTimeMillis());
	return false;
	}

	public static String getProperty(String property, String defaultVal) {
	final String prop = property;
	final String def = defaultVal;
	return java.security.AccessController.doPrivileged(
	new java.security.PrivilegedAction<String>() {
	public String run() {
	return System.getProperty(prop, def);
	}
	});
	}

	/**
	* Property mutators
	*/
	public static void setBoolean(String property, boolean value) {
	setProperty(property, (new Boolean(value)).toString());
	}
	public static void setInteger(String property, int value) {
	setProperty(property, Integer.toString(value));
	}
	public static void setProperty(String property, String value) {
	final String prop = property;
	final String val = value;
	java.security.AccessController.doPrivileged(
	new java.security.PrivilegedAction<Void>() {
	public Void run() {
	System.setProperty(prop, val);
	return null;
	}
	});
	}

	/**
	* Routines to print out a test's properties environment.
	*/
	public static void printEnvironment() {
	printEnvironment(System.err);
	}
	public static void printEnvironment(PrintStream out) {
	out.println("-------------------Test environment----------" +
	"---------");

	for(Enumeration<?> keys = System.getProperties().keys();
	keys.hasMoreElements();) {

	String property = (String) keys.nextElement();
	out.println(property + " = " + getProperty(property, null));
	}
	out.println("---------------------------------------------" +
	"---------");
	}

	/**
	* Routine that "works-around" a limitation in jtreg.
	* Currently it is not possible for a test to specify that the
	* test harness should build a given source file and install the
	* resulting class in a location that is not accessible from the
	* test's classpath. This method enables a test to move a
	* compiled test class file from the test's class directory into a
	* given "codebase" directory. As a result the test can only
	* access the class file for <code>className</code>if the test loads
	* it from a classloader (e.g. RMIClassLoader).
	*
	* Tests that use this routine must have the following permissions
	* granted to them:
	*
	* getProperty user.dir
	* getProperty etc.
	*/
	public static URL installClassInCodebase(String className,
	String codebase)
	throws MalformedURLException
	{
	return installClassInCodebase(className, codebase, true);
	}

	public static URL installClassInCodebase(String className,
	String codebase,
	boolean delete)
	throws MalformedURLException
	{
	/*
	* NOTES/LIMITATIONS: The class must not be in a named package,
	* and the codebase must be a relative path (it's created relative
	* to the working directory).
	*/
	String classFileName = className + ".class";

	/*
	* Specify the file to contain the class definition. Make sure
	* that the codebase directory exists (underneath the working
	* directory).
	*/
	File dstDir = (new File(getProperty("user.dir", "."), codebase));

	if (!dstDir.exists()) {
	if (!dstDir.mkdir()) {
	throw new RuntimeException(
	"could not create codebase directory");
	}
	}
	File dstFile = new File(dstDir, classFileName);

	/*
	* Obtain the URL for the codebase.
	*/
	URL codebaseURL = dstDir.toURI().toURL();

	/*
	* Specify where we will copy the class definition from, if
	* necessary. After the test is built, the class file can be
	* found in the "test.classes" directory.
	*/
	File srcDir = new File(getProperty("test.classes", "."));
	File srcFile = new File(srcDir, classFileName);

	mesg(srcFile);
	mesg(dstFile);

	/*
	* If the class definition is not already located at the codebase,
	* copy it there from the test build area.
	*/
	if (!dstFile.exists()) {
	if (!srcFile.exists()) {
	throw new RuntimeException(
	"could not find class file to install in codebase " +
	"(try rebuilding the test): " + srcFile);
	}

	try {
	copyFile(srcFile, dstFile);
	} catch (IOException e) {
	throw new RuntimeException(
	"could not install class file in codebase");
	}

	mesg("Installed class \"" + className +
	"\" in codebase " + codebaseURL);
	}

	/*
	* After the class definition is successfully installed at the
	* codebase, delete it from the test's CLASSPATH, so that it will
	* not be found there first before the codebase is searched.
	*/
	if (srcFile.exists()) {
	if (delete && !srcFile.delete()) {
	throw new RuntimeException(
	"could not delete duplicate class file in CLASSPATH");
	}
	}

	return codebaseURL;
	}

	public static void copyFile(File srcFile, File dstFile)
	throws IOException
	{
	FileInputStream src = new FileInputStream(srcFile);
	FileOutputStream dst = new FileOutputStream(dstFile);

	byte[] buf = new byte[32768];
	while (true) {
	int count = src.read(buf);
	if (count < 0) {
	break;
	}
	dst.write(buf, 0, count);
	}

	dst.close();
	src.close();
	}

	/** routine to unexport an object */
	public static void unexport(Remote obj) {
	if (obj != null) {
	try {
	mesg("unexporting object...");
	UnicastRemoteObject.unexportObject(obj, true);
	} catch (NoSuchObjectException munch) {
	} catch (Exception e) {
	e.getMessage();
	e.printStackTrace();
	}
	}
	}

	/**
	* Allow test framework to control the security manager set in
	* each test.
	*
	* @param managerClassName The class name of the security manager
	* to be instantiated and set if no security
	* manager has already been set.
	*/
	public static void suggestSecurityManager(String managerClassName) {
	SecurityManager manager = null;

	if (System.getSecurityManager() == null) {
	try {
	if (managerClassName == null) {
	managerClassName = TestParams.defaultSecurityManager;
	}
	manager = ((SecurityManager) Class.
	forName(managerClassName).newInstance());
	} catch (ClassNotFoundException cnfe) {
	bomb("Security manager could not be found: " +
	managerClassName, cnfe);
	} catch (Exception e) {
	bomb("Error creating security manager. ", e);
	}

	System.setSecurityManager(manager);
	}
	}

	/**
	* Creates an RMI {@link Registry} on a random, un-reserved port.
	*
	* @returns an RMI Registry, using a random port.
	* @throws RemoteException if there was a problem creating a Registry.
	*/
	public static Registry createRegistryOnUnusedPort() throws RemoteException {
	return LocateRegistry.createRegistry(getUnusedRandomPort());
	}

	/**
	* Creates an RMI {@link Registry} on an ephemeral port.
	*
	* @returns an RMI Registry
	* @throws RemoteException if there was a problem creating a Registry.
	*/
	public static Registry createRegistryOnEphemeralPort() throws RemoteException {
	return LocateRegistry.createRegistry(0);
	}

	/**
	* Returns the port number the RMI {@link Registry} is running on.
	*
	* @param registry the registry to find the port of.
	* @return the port number the registry is using.
	* @throws RuntimeException if there was a problem getting the port number.
	*/
	public static int getRegistryPort(Registry registry) {
	int port = -1;

	try {
	RemoteRef remoteRef = ((RegistryImpl)registry).getRef();
	LiveRef liveRef = ((UnicastServerRef)remoteRef).getLiveRef();
	Endpoint endpoint = liveRef.getChannel().getEndpoint();
	TCPEndpoint tcpEndpoint = (TCPEndpoint) endpoint;
	port = tcpEndpoint.getPort();
	} catch (Exception ex) {
	throw new RuntimeException("Error getting registry port.", ex);
	}

	return port;
	}

	/**
	* Returns an unused random port number which is not a reserved port. Will
	* try up to 10 times to get a random port before giving up and throwing a
	* RuntimeException.
	*
	* @return an unused random port number.
	* @throws RuntimeException if there was a problem getting a port.
	*/
	public static int getUnusedRandomPort() {
	int numTries = 0;
	IOException ex = null;

	while (numTries++ < MAX_SERVER_SOCKET_TRIES) {
	int unusedRandomPort = -1;
	ex = null; //reset

	try (ServerSocket ss = new ServerSocket(0)) {
	unusedRandomPort = ss.getLocalPort();
	} catch (IOException e) {
	ex = e;
	// temporarily print stack trace here until we find out why
	// tests are failing.
	System.err.println("TestLibrary.getUnusedRandomPort() caught "
	+ "exception on iteration " + numTries
	+ (numTries==MAX_SERVER_SOCKET_TRIES ? " (the final try)."
	: "."));
	ex.printStackTrace();
	}

	if (unusedRandomPort >= 0) {
	if (isReservedPort(unusedRandomPort)) {
	System.out.println("INFO: On try # " + numTries
	+ (numTries==MAX_SERVER_SOCKET_TRIES ? ", the final try, ": ",")
	+ " ServerSocket(0) returned the reserved port "
	+ unusedRandomPort
	+ " in TestLibrary.getUnusedRandomPort() ");
	} else {
	return unusedRandomPort;
	}
	}
	}

	// If we're here, then either an exception was thrown or the port is
	// a reserved port.
	if (ex==null) {
	throw new RuntimeException("Error getting unused random port. The"
	+" last port returned by ServerSocket(0) was a reserved port");
	} else {
	throw new RuntimeException("Error getting unused random port.", ex);
	}
	}

	/**
	* Determines if a port is one of the reserved port numbers.
	*
	* @param port the port to test.
	* @return {@code true} if the port is a reserved port, otherwise
	* {@code false}.
	*/
	public static boolean isReservedPort(int port) {
	return ((port >= FIXED_PORT_MIN) && (port <= FIXED_PORT_MAX) \|\|
	(port == 1099));
	}

	/**
	* Method to capture the stack trace of an exception and return it
	* as a string.
	*/
	public String stackTraceToString(Exception e) {
	ByteArrayOutputStream bos = new ByteArrayOutputStream();
	PrintStream ps = new PrintStream(bos);

	e.printStackTrace(ps);
	return bos.toString();
	}

	/** extra properties */
	private static Properties props;

	/**
	* Returns extra test properties. Looks for the file "../../test.props"
	* and reads it in as a Properties file. Assuming the working directory
	* is "<path>/JTwork/scratch", this will find "<path>/test.props".
	*/
	private static synchronized Properties getExtraProperties() {
	if (props != null) {
	return props;
	}
	props = new Properties();
	File f = new File(".." + File.separator + ".." + File.separator +
	"test.props");
	if (!f.exists()) {
	return props;
	}
	try {
	FileInputStream in = new FileInputStream(f);
	try {
	props.load(in);
	} finally {
	in.close();
	}
	} catch (IOException e) {
	e.printStackTrace();
	throw new RuntimeException("extra property setup failed", e);
	}
	return props;
	}

	/**
	* Returns an extra test property. Looks for the file "../../test.props"
	* and reads it in as a Properties file. Assuming the working directory
	* is "<path>/JTwork/scratch", this will find "<path>/test.props".
	* If the property isn't found, defaultVal is returned.
	*/
	public static String getExtraProperty(String property, String defaultVal) {
	return getExtraProperties().getProperty(property, defaultVal);
	}
	}