Skip to content


Subversion checkout URL

You can clone with
Download ZIP
tree: 43afed9b82

Fetching latest commit…

Cannot retrieve the latest commit at this time

Failed to load latest commit information.


Here is the bad news: the new developer you hired has written some terrible, atrocious code. 
No one can understand what it does. 

The good news: at least there are unit tests to prove the code is working. 

You job is to refactor the code and make it readable, while keeping the code in working order (pass all tests). 

!!How To Start!!

  1.	Open the solution file. 

  2.	Run the tests to make sure everything is in working order.
        Note: you'll need to use an test runner. 
        R# users can get xunitcontrib-resharper from
        Otherwise, download xUnit from
        Once you've unblocked and extracted the files, run xunit.gui.exe.

  3.	Start refactoring! 
The primary goal is to refactor the code in Algorithm\Finder.cs – as it stands the code is incomprehensible. 


-	Start with simple rename refactors so you can better understand the abstractions you are working with. 
    Rename any class or any variable. 

-	Move on to extract methods and making the code more modular.

-	See if you can also eliminate switch statements and multiple exit points from methods. 

Anything is fair game  – create new classes, new methods, and rename tests. 
The only restriction is that the existing tests have to keep working. 
Lean on the tests and run them after every small change to make sure you are on the right path.

!!How to End!!

You can stop when you feel the code is good enough – something you can come back to in 6 months and understand. 
Something went wrong with that request. Please try again.