It's Thursday, time for our weekly code puzzler! The idea is simple: solve the coding problem as efficiently as you can, in any language or framework that you think is suitable.

Note: Even though there really is nothing stopping you from finding a solution to this on the internet, try to keep honest, and come up with your own answer.  It's all about the participation!

Test Case Generator

For those who don't follow pure test driven development, or are dealing with legacy code, it's sometimes necessary to write up suites of test cases to ensure everything works as expected. Today's challenge is to write a piece of code that inspects a Java class, and create a corresponding test class for it. As well as having tests for each method, you should consider the parameters, return types and exceptions along with the different possible ranges.

There's a few different ways to achieve this. If you wish, you can express the efficiency of the algorithm you come up with using Big O notation.

Catch up on all our previous puzzlers here