An API Gateway is a design pattern often used in microservice architecture to provide a single access point to the underlying system. In this article, Mateusz Korszun from Meltwater explains why it's crucial to have meaningful tests for their API gateway. He also shows you the test setup their use.
Github has open sourced a Ruby library it calls Scientist. The idea behind scientist is that it helps developers to replace old clunky (but working) source code "with confidence." In other word, there's less praying when you're ready to cut over to the new version. But can it work for APIs too?