I was experiencing this as well. My solution involved using use MyApp.MyBehaviour. This required that I implement def __using__(_) as so:
defmodule MyApp.MyBehaviour do
@moduledoc """
Behaviour definition
"""
@type entry_attrs_t::map
@callback create_entry(entry_attrs_t) :: any
def __using__(_) do
end
end
and then in test/support/mocks.ex:
use MyApp.MyBehaviour
defmodule Mocks do
@moduledoc false
end
Mox.defmock(MyApp.MyMock, for: MyApp.MyBehaviour)
kinda hacky, but not horrible…


















