RSpec matchers for database queries. Contribute to civiccc/db-query-matchers development by creating an account on GitHub.

Active Support InstrumentationActive Support is a part of core Rails that provides Ruby language extensions, utilities, and other things. One of the things it includes is an instrumentation API that can be used inside an application to measure certain actions that occur within Ruby code, such as that inside a Rails application or the framework itself. It is not limited to Rails, however. It can be used independently in other Ruby scripts if it is so desired.In this guide, you will learn how to use the instrumentation API inside of Active Support to measure events inside of Rails and other Ruby code.After reading this guide, you will know: What instrumentation can provide. How to add a subscriber to a hook. The hooks inside the Rails framework for instrumentation. How to build a custom instrumentation implementation.