test/medical_transcription/transcription_supervisor_test.exs

defmodule Medicode.TranscriptionSupervisorTest do
  @moduledoc """
  Tests for Medicode.TranscriptionServer
  """

  use Medicode.DataCase

  import Medicode.TranscriptionsFixtures

  alias Medicode.TranscriptionSupervisor

  setup do
    sample_file =
      __DIR__
      |> Path.join("../../medasrdemo-Paul.mp3")
      |> Path.expand()

    transcription = transcription_fixture(%{filename: sample_file})
    %{transcription: transcription}
  end

  test "transcribe and tag audio", %{transcription: transcription} do
    assert {:ok, _pid} = TranscriptionSupervisor.start_transcription(transcription)

    {_, server_pid, :worker, [Medicode.TranscriptionServer]} =
      TranscriptionSupervisor
      |> DynamicSupervisor.which_children()
      |> Enum.at(0)

    ref = Process.monitor(server_pid)
    assert_receive({:DOWN, ^ref, :process, _object, _pid}, 5_000)
  end
end