Convert tests to tape

[MikeTheReader]

Okay, this might be overkill by now, but I hadn't heard of Tape before, so used this as a quick learning exercise. Certainly does its job much faster than Jest. I see there are other libraries that allow for nesting of tests, but didn't include those here, since it's such a simple set.

Caveat: It was my first time using tape, so if you see any obvious errors or misuses, let me know.

Thanks.

[mvayngrib]

@MikeTheReader looks great, merged! I'll send you a collaborator invite in a sec