Added unit tests for 1-1, 1-2, 1-4, and 2-2
Added unit tests for 1-1, 1-2, 1-4, and 2-2

ajrulez/FullScreenMario-1,ajrulez/FullScreenMario-1,eross/FullScreenMario,shuidong/FullScreenMario,daivee/FullScreenMario,chensj1901/FullScreenMario,andrewerb/FullScreenMario,daivee/FullScreenMario,vaikan/FullScreenMario-JSON,andrewerb/FullScreenMario,ogregoire/FullScreenMario,daivee/FullScreenMario,vaikan/FullScreenMario-JSON,andrewerb/FullScreenMario,bx5974/FullScreenMario,bx5974/FullScreenMario,vaikan/FullScreenMario-JSON,chensj1901/FullScreenMario,eross/FullScreenMario,rmallols/FullScreenMario,ajrulez/FullScreenMario-1,eross/FullScreenMario,shuidong/FullScreenMario,shuidong/FullScreenMario,rmallols/FullScreenMario,ogregoire/FullScreenMario,chensj1901/FullScreenMario,rmallols/FullScreenMario,ogregoire/FullScreenMario,bx5974/FullScreenMario