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

    nodes.machine = {
      services.clickhouse.enable = true;
      virtualisation.memorySize = 4096;
    };

    testScript =
      let
        # work around quote/substitution complexity by Nix, Perl, bash and SQL.
        tableDDL = pkgs.writeText "ddl.sql" "CREATE TABLE `demo` (`value` FixedString(10)) engine = MergeTree PARTITION BY value ORDER BY tuple();";
        insertQuery = pkgs.writeText "insert.sql" "INSERT INTO `demo` (`value`) VALUES ('foo');";
        selectQuery = pkgs.writeText "select.sql" "SELECT * from `demo`";
      in
      ''
        machine.start()
        machine.wait_for_unit("clickhouse.service")
        machine.wait_for_open_port(9000)

        machine.succeed(
            "cat ${tableDDL} | clickhouse-client"
        )
        machine.succeed(
            "cat ${insertQuery} | clickhouse-client"
        )
        machine.succeed(
            "cat ${selectQuery} | clickhouse-client | grep foo"
        )
      '';
  }
)