Lab 5

Due: 03/25

Debugging, Testing, and Logging

Objectives

• 6 Points - Debug a class
• 8 Points - Add logging to classes
• 8 Points - Writing unit testcases

Description

Debug a class

In this task we will debug an error in a provided class using either jdb (see here), the debugger in Eclipse, or any other Java debugger. We have uploaded a java file lecture.lab5.ListOps to your git repository. This class provides two operations on lists:

1) Reversing the order of elements in a list 2) Searching for an element in a sorted list using binary search

Both methods have errors and do not function correctly. Your task is to use a debugger to determine the cause of the errors and fix them. As a deliverable we expect a fixed version of this class.

Add logging to classes

In this task you will adding logging facilities to classes produced in previous assignments. Enhance the following classes:

• lecture.lab4.DataFrame
• lecture.lab4.CSVFileReader
• lecture.lab4.TestDataFrameCSV

Writing unit testcases

In this task you will apply unit testing with JUnit. Create a class lecture.lab5.TestDataFrame with several unit tests for lecture.lab4.DataFrame. It is up to you to come up with meaningful test cases. Here are a few examples of what you may want to test:

• after appending n rows, getNumRows should return n
• adding a row with to many or not enough columns results in an exception being thrown by appendRow
• getColumnName(getColumnPos(name)) == name