We'll now explore how to run the tests that interact with the application's repository separately. At the beginning of this chapter, we created some tests for the %Media{} struct, and seen how we can test the changeset logic without ever touching the database. Now, we'll see how to actually run the tests that hit the database.
A common question that's asked every once in a while is how to create a mock for the repository, so that we can test the functions that interact with it independently. While the repository is indeed another dependency, we think that creating a mock for it makes no sense, because in the repository tests, we want to verify that our commands and queries work as expected. ...
