See Readme

When ShamRack doesn't quite cut it; when your JavaScript and non-Ruby code needs to hit an external API for your tests; when you're excited about spinning up a full server instead of faking out Net::HTTP: we present the Discoball.

Docker matrix runner with parallel execution

Simple parameterized testing with RSpec (a.k.a table tests)

VCR serializer for persisting binary data outside cassettes