Checks a haskell script (lhs, hs) based on tests specified in a test file and provides a graphical user interface to show the results, including return values compared to check value(s), coloring to see which tests fail at a glance and approximate execution time benchmarking. As a test file you may use a valid haskell script file (that runs in WinHugs) simply checking for logical equality of expressions (using ==). You may also use "~>" after a haskell expression to indicate the desired output...