recon_test.exs

defmodule ReconTest do
  use ExUnit.Case, async: true

  test "FAKE" do
    ReconTrace.calls(
      {module, function, 3},
      10,
      [
        {:io_server, self()},
        {:formatter,
         fn {:trace, _pid, :call, {_module, _function, args}} ->
           args
         end}
      ]
    )

    assert_received(
      {:io_request, _, _,
       {:put_chars, :unicode, :io_lib, :format,
        [
          args,
          []
        ]}},
      "##############################\n Module.store/3 not called"
    )
  end
end