Suggest missing scenarios in tests?

[hrs]

We're collecting a bunch of type signatures. How can we use them?

There are probably a bunch of untested edge cases that we could detect. Maybe a method is tested with a TrueClass argument but not a FalseClass? Maybe a method takes an Array, but doesn't test the edge case where it's []?

We could probably find or develop a catalog of common errors and use Bringhurst to identify them.