nixpkgs/nixos/tests/transfer-sh.nix

import ./make-test-python.nix (
  { pkgs, lib, ... }:
  {
    name = "transfer-sh";

    meta = {
      maintainers = with lib.maintainers; [ ocfox ];
    };

    nodes.machine =
      { pkgs, ... }:
      {
        services.transfer-sh = {
          enable = true;
          settings.LISTENER = ":1234";
        };
      };

    testScript = ''
      machine.wait_for_unit("transfer-sh.service")
      machine.wait_for_open_port(1234)
      machine.succeed("curl --fail http://localhost:1234/")
    '';
  }
)