defmodule Scopes.CSysTest do
  use ExUnit.Case, async: true
  @moduletag timeout: 5000

  alias Scopes.CSys
  alias Scopes.CSys.Environ
  alias Scopes.CSys.Program
  alias Scopes.Shape

  def receive_select(head) do
    assert_receive {^head, info}
    {head, info}
  end

  def receive_data(head \\ [:csys, :data]) do
    Shape.data(receive_select(head))
  end

  def neg_only(msg) do
    if Shape.data(msg)[:value] < 0, do: msg
  end

  describe "basic:" do
    test "minimal-neural-net" do
      zero = Environ.setup(Program.prepare_basic())
      CSys.send_value(zero, "Hello Zero!")
      assert "Hello Zero!" = receive_data().value
      CSys.send_message(zero, [:csys, :create, :pred], %{op: &neg_only/1})
      assert_receive {:created, new1}
      CSys.send_message(new1, [:csys, :create, :succ], %{op: CSys.data_only()})
      assert_receive {:created, _new2}
      CSys.send_value(new1, "Hello New1!")
      assert "Hello New1!" = receive_data().value
      #assert "Hello New1!" = receive_data().value
      Process.sleep(50)
      refute_received msg, "unhandled message(s): #{inspect(msg)}"
    end
  end
end