folly: conv: test: expand test to showcase accepted / not-accepted combinations
folly: conv: test: expand test to showcase accepted / not-accepted combinations

Reviewed By: yfeldblum

Differential Revision: D16138503

fbshipit-source-id: 49243eeb6eb24417c912b89beb84d15bae73053f

facebook/folly,facebook/folly,facebook/folly,facebook/folly,facebook/folly