edu.pdx.cs399J.grader
Class Tester

java.lang.Object
  edu.pdx.cs399J.grader.Tester

public class Tester
extends Object

This class contains a number of helper methods for testing projects in CS399J.

Author:

David Whitlock

Constructor Summary

Tester(PrintWriter pw)
Creates a new Tester that sends its output to a given PrintWriter.

Tester(String id, File logDir)
Creates a new Tester for a given student.

Method Summary

void	cat(File file) "Cats" a file to the log.
void	cp(File srcFile, File destFile) Copies one file to another.
void	executeMain(String className, String[] args) Executes the main method of the class with the given name with the given arguments.
Thread	executeMainInThread(String className, String[] args) Executes the main method of the class with the given name in its own thread.
Object	executeStatic(String className, String methodName, Class[] paramTypes, Object[] params) Executes a static method of a given name in a given class with a given set of parameters.
Object	executeStatic(String className, String methodName, Class[] paramTypes, Object[] params, boolean printBanner) Executes a static method of a given name in a given class with a given set of parameters.
void	finalize() Make sure we're done when this Tester gets garbage collected.
static void	main(String[] args) Load a class from a given directory
static void	main0(String[] args) Old Test Program.
static URL[]	parseURLPath(String path) Parses a file path and creates an array of URLs representing each file on the path.
void	printBanner(String text, char c) Prints a line of text to the log file, centers it, around surrounds it with a given character.
void	println(Object o) Prints a left justified line of text to the log file.
void	println(String text) Prints a left justified line of text to the log file.
void	printlnCentered(String text) Prints a line of text to the log file and centers it.
void	setURLs(URL[] urls) Sets the URLs on which to search for students' classes
boolean	wait(int seconds) Waits for a given number of seconds.

Methods inherited from class java.lang.Object

clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Tester

public Tester(PrintWriter pw)

Creates a new Tester that sends its output to a given PrintWriter. This is useful when you want to dump to the console. The "student's" id is "writer".

Tester

public Tester(String id,
              File logDir)

Creates a new Tester for a given student. It will create a log file in given directory.

Parameters:

id - The student's login id

logDir - Directory into which the log file is placed.

Method Detail

parseURLPath

public static URL[] parseURLPath(String path)

Parses a file path and creates an array of URLs representing each file on the path.

setURLs

public void setURLs(URL[] urls)

Sets the URLs on which to search for students' classes

executeStatic

public Object executeStatic(String className,
                            String methodName,
                            Class[] paramTypes,
                            Object[] params)

Executes a static method of a given name in a given class with a given set of parameters.

executeStatic

public Object executeStatic(String className,
                            String methodName,
                            Class[] paramTypes,
                            Object[] params,
                            boolean printBanner)

Executes a static method of a given name in a given class with a given set of parameters.

Parameters:

printBanner - Do we print a banner message?

executeMainInThread

public Thread executeMainInThread(String className,
                                  String[] args)

Executes the main method of the class with the given name in its own thread.

Returns:

The Thread in which the main method is running.

wait

public boolean wait(int seconds)

Waits for a given number of seconds. Returns false if the thread was interrupted.

executeMain

public void executeMain(String className,
                        String[] args)

Executes the main method of the class with the given name with the given arguments.

println

public void println(Object o)

Prints a left justified line of text to the log file.

println

public void println(String text)

Prints a left justified line of text to the log file.

printlnCentered

public void printlnCentered(String text)

Prints a line of text to the log file and centers it.

printBanner

public void printBanner(String text,
                        char c)

Prints a line of text to the log file, centers it, around surrounds it with a given character.

cp

public void cp(File srcFile,
               File destFile)

Copies one file to another. If the destination file exists, it is overridden.

cat

public void cat(File file)

"Cats" a file to the log. That is, copies its contents to the log.

Parameters:

file - File to be catted

finalize

public void finalize()

Make sure we're done when this Tester gets garbage collected. This way, the stream will always get closed.

Overrides:

finalize in class Object

main

public static void main(String[] args)

Load a class from a given directory

main0

public static void main0(String[] args)

Old Test Program.