Sazerac is a library for data-driven tests, where a series of tests asserts that the return value of a function matches the expected value. It provides nice syntax for tightening this up.
https://hackernoon.com/sazerac-data-driven-testing-for-javascript-e3408ac29d8c
This converts our tests to use it, and replaces some similar home-grown code.
I fixed one bug I encountered along the way: mikec/sazerac#12.
