lets have another go at the bowling game
no class to create a game
able to create a game, no refactoring
failing test, there's no method called roll
stubbed and unbelievable test
refactor out the game class
failing test for a gutter game
simplest possible pass
refactor and delete redundant test
failing test case on score
simplest possible pass
refactor to roll many
we don't score spares correctly
skip that test pending a refactoring
refactor to put the responsibility in the right place
back to a sensible failing test
need to refactor to count to frames, so skip test
refactor to count to frames
and now unskip test
filthy filthy pass