You can write a using macro to automatically create a behaviour from specs in a module with https://hexdocs.pm/elixir/Module.html#spec_to_callback/2 https://hex

You can write a using macro to automatically create a behaviour from specs in a module with https://hexdocs.pm/elixir/Module.html#spec_to_callback/2 https://hexdocs.pm/elixir/Module.html#spec_to_callback/2 It's been a minute but I've done it. The behaviour/implementation setup reminds me of Java, especially when they're exactly the same. I do recommend only using mox as far down as possible (only around libraries). Hammox is Mox on steroids, check it out too.