nixpkgs/nixos/tests/node-red.nix

{ pkgs, ... }:
{
  name = "nodered";
  meta = with pkgs.lib.maintainers; {
    maintainers = [ matthewcroughan ];
  };

  nodes = {
    client =
      { config, pkgs, ... }:
      {
        environment.systemPackages = [ pkgs.curl ];
      };
    nodered =
      { config, pkgs, ... }:
      {
        services.node-red = {
          enable = true;
          openFirewall = true;
        };
      };
  };

  testScript = ''
    start_all()
    nodered.wait_for_unit("node-red.service")
    nodered.wait_for_open_port(1880)

    client.wait_for_unit("multi-user.target")

    with subtest("Check that the Node-RED webserver can be reached."):
        assert "<title>Node-RED</title>" in client.succeed(
            "curl -sSf http:/nodered:1880/ | grep title"
        )
  '';
}