test/medical_transcription/classification_supervisor_test.exs

defmodule Medicode.ClassificationSupervisorTest do
  @moduledoc """
  Tests for Medicode.ClassificationSupervisor
  """

  use Medicode.DataCase

  import Medicode.TranscriptionChunksFixtures

  alias Medicode.ClassificationSupervisor

  setup do
    chunk = transcription_chunk_fixture(%{text: "patient fell and is experiecing knee pain"})
    %{chunk: chunk}
  end

  test "extract keywords and assign codes", %{chunk: chunk} do
    assert {:ok, _pid} = ClassificationSupervisor.start_classification(chunk)

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

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