Is unit testing viable in game programming?

Question

I\'m fond of the idea of unit testing but I\'m having trouble applying it to game programming. Games are highly stateful and often the code doesn\'t break itself into distinct u

Answer 1

Unit testing just doesn't care at all how "stateful" your unit is. You have a more or less self-contained piece of code, and if its input and output vector are huge then testing is difficult. Whether or not these vectors are laid down as states before and after execution doesn't change a bit about the testing. If you want to tell us however that you can't think of a proper way to define test cases like in most simple-minded unit testing tutorials/papers, i.e. the test subject is something like "f(x) = y" , then yes, I agree, you will have a hard time proving that the few (x[100],y[99]) vectors that a human cane come up with yield sufficient coverage (numerics!). Try to formulate integrative properties and invariants and go for automated testing.