TestingElixir

• Tests are implemented as Elixir scripts, hence .exs file format
• ExUnit.start() starts ExUnit than runs the test

Steps:

• mix test runs the tests

Testing macros

• assert -> truthy expression
• refute -> falsy expression

Tests Covered ->

• Example test
• Doc test
• Db test
• Mock test
• GenServer test
• Property test

Utilities ->

• unit_test -> normal function test
• doctests -> tests the iex> block in the function documentation Extremely useful as it demonstrates the user how to use the library and tests at the same time.
• describe -> to group block of tests with independent setup calls

Testing functions that interacts with DB

Configuring DB connections

• Ecto

• configure the repo in config/test.exs

• Direct Db insert testing.

• Mox - Mocking library

• Async running test using async: true

• mix test --cover