Support for @macrocallback ?

[Miradorn]

I just found out the hard way that it doesn't seem to work to mock a behaviour with @macrocallback (I wanted a mock for Spandex.Tracer).
Would it be possible/easy to add it?

Thanks!

[superhawk610]

Not sure if this works for your use case, but I ran into a similar issue and worked around it by defining a slimmed-down Spandex.Tracer behaviour without the @macrocallbacks:

defmodule MyApp.Monitoring.TracerBehaviour do
  @moduledoc false

  @callback start_span(span_name :: String.t(), opts :: Keyword.t()) :: :ok
  @callback finish_span(opts :: Keyword.t()) :: :ok
end

Then used it in my test_helper.exs:

Mox.defmock(TracerMock, for: MyApp.Monitoring.TracerBehaviour)