Cuffsert allows encoding the metadata and commandline arguments needed to load a template in a versionable file which takes CloudFormation the last mile to really become an infrastructure-as-code platform.

Nothing more to add

Writing specs for reactive streams is tricky both because of their asynchronous nature and because their next/error/completed semantics. The goal of rx-rspec is to provide powerful matchers that lets you express your expectations in a traditional rspec-like synchronous manner.