nixpkgs/nixos/tests/syncthing-relay.nix

import ./make-test-python.nix (
  { lib, pkgs, ... }:
  {
    name = "syncthing-relay";
    meta.maintainers = with pkgs.lib.maintainers; [ ];

    nodes.machine = {
      environment.systemPackages = [ pkgs.jq ];
      services.syncthing.relay = {
        enable = true;
        providedBy = "nixos-test";
        pools = [ ]; # Don't connect to any pool while testing.
        port = 12345;
        statusPort = 12346;
      };
    };

    testScript = ''
      machine.wait_for_unit("syncthing-relay.service")
      machine.wait_for_open_port(12345)
      machine.wait_for_open_port(12346)

      out = machine.succeed(
          "curl -sSf http://localhost:12346/status | jq -r '.options.\"provided-by\"'"
      )
      assert "nixos-test" in out
    '';
  }
)