🔗 The repository pattern, Ecto, and database-less testing

In this blog post, we’ll be talking about what exactly the repository pattern is, how it applies to Ecto, and how you can go about testing your Ecto backed applications without using a database. We’ll play around with this concept by putting together a simple Elixir application that leverages Postgres during development. But, then we will write some tests that make use of a database-less mock Repo. Without further ado, let’s dive right into things!