Testing Elixir

Testing an Ecto Schema for Database Interactions

The most common use case for Ecto schemas is to enable easy interaction with a database. While we keep our schemas to a minimum of logic—just the schema definition and changeset function or functions—we still need to make some changes in order to use our schema with a database. We’ll update the basic schema we wrote (skipping the changes we made for using it as a validator) and then update our tests. Once we’ve covered the schema aspects, we’ll move on to cover testing queries that use the schema.

Adding a Database into Our Application

Before we can make the necessary changes, we need to make sure that we have a local running database. Given that every reader will have a different local setup, ...