We’re living in a golden age of data. From emails to medical notes, videos to customer reviews, the bulk of today’s information is unstructured—and it’s only growing. In this era of data-driven innovation, success isn’t just about having data—it’s about making sense of it.

When developing a Ruby gem that interacts with a Rails application, a dummy app is nice for thorough testing. It’s a miniature Rails application within your gem’s test suite, providing a realistic environment to test your gem’s features.