I think it's good to have separate scenarios for the different possibilities of `expect_with`, but I still think that for a given possibility (e.g. `:minitest`) it's overly verbose and (not valuable for documentation) to have it split into one scenario for failing examples and one for passing examples.  This isn't a merge blocker, but does it cause a problem to combine the failing vs passing scenarios for a particular `expect_with` option into one scenario?