The same tests with different adapters

flippant_test.exs

  for adapter <- [Memory, Redis] do
    @adapter adapter

    setup_all do
      Application.put_env(:flippant, :adapter, @adapter)
      Application.ensure_started(:flippant)

      on_exit fn ->
        Application.stop(:flippant)
      end

      :ok
    end
    
    # tests
  end