In this post, we’re going to explore the content of this library and use it for counting the LOC* of a Rails application. This means that this library .

Apparition is a driver for Capybara. It allows you to run your Capybara tests in the Chrome browser via CDP (no selenium or chromedriver needed) in a h.

Profiler for your development and production Ruby rack apps. - MiniProfiler/rack-mini-profiler.Middleware that displays speed badge for every html pag.

Time-sensitive tests can be a pain.Thankfully, for many years the timecop gem served as a way to “freeze” time and “time travel” during tests, so that .

Learn how to get a 3x performance improvement on your Postgres database and 500x reduced data loaded from disk. DBAs and developers use pganalyze to id.