Tests

Your test directory contains all of the ExUnit tests for your application, which itself is broken up into two starting directories: (application name)_web and support (plus a test_helper Elixir script that contains some initialization code). (app)_web is used to contain the web application tests that cover controllers, contexts, views, templates, and so on, so you can think of this as the container for all of your Phoenix application tests. Support is instead used to bolster the functionality of your tests and make it easier to write new tests and share common logic or helpers. For the most part, we won't be modifying the code inside here very often. Most of the changes that we're going to make will instead be in the test/(app)_web directory and sub-directories.