nixpkgs/nixos/tests/snapcast.nix

import ./make-test-python.nix ({ pkgs, ...} :

let
  port = 10004;
  tcpPort = 10005;
  httpPort = 10080;
  tcpStreamPort = 10006;
  bufferSize = 742;
in {
  name = "snapcast";
  meta = with pkgs.lib.maintainers; {
    maintainers = [ hexa ];
  };

  nodes = {
    server = {
      services.snapserver = {
        enable = true;
        port = port;
        tcp.port = tcpPort;
        http.port = httpPort;
        buffer = bufferSize;
        streams = {
          mpd = {
            type = "pipe";
            location = "/run/snapserver/mpd";
            query.mode = "create";
          };
          bluetooth = {
            type = "pipe";
            location = "/run/snapserver/bluetooth";
          };
          tcp = {
            type = "tcp";
            location = "127.0.0.1:${toString tcpStreamPort}";
          };
          meta = {
            type = "meta";
            location = "/mpd/bluetooth/tcp";
          };
        };
      };
    };
    client = {
      environment.systemPackages = [ pkgs.snapcast ];
    };
  };

  testScript = ''
    import json

    get_rpc_version = {"id": "1", "jsonrpc": "2.0", "method": "Server.GetRPCVersion"}

    start_all()

    server.wait_for_unit("snapserver.service")
    server.wait_until_succeeds("ss -ntl | grep -q ${toString port}")
    server.wait_until_succeeds("ss -ntl | grep -q ${toString tcpPort}")
    server.wait_until_succeeds("ss -ntl | grep -q ${toString httpPort}")
    server.wait_until_succeeds("ss -ntl | grep -q ${toString tcpStreamPort}")

    with subtest("check that pipes are created"):
        server.succeed("test -p /run/snapserver/mpd")
        server.succeed("test -p /run/snapserver/bluetooth")

    with subtest("test tcp json-rpc"):
        server.succeed(f"echo '{json.dumps(get_rpc_version)}' | nc -w 1 localhost ${toString tcpPort}")

    with subtest("test http json-rpc"):
        server.succeed(
            "curl --fail http://localhost:${toString httpPort}/jsonrpc -d '{json.dumps(get_rpc_version)}'"
        )

    with subtest("test a connection"):
        client.execute("systemd-run --unit=snapcast-client snapclient -h server -p ${toString port}")
        server.wait_until_succeeds(
            "journalctl -o cat -u snapserver.service | grep -q 'Hello from'"
        )
        client.wait_until_succeeds("journalctl -o cat -u snapcast-client | grep -q 'buffer: ${toString bufferSize}'")
  '';
})