depot/third_party/nixpkgs/nixos/tests/pgbouncer.nix

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

  meta = with lib.maintainers; {
    maintainers = [ _1000101 ];
  };

  nodes = {
    one = { pkgs, ... }: {
      systemd.services.postgresql = {
        postStart = ''
          ${pkgs.postgresql}/bin/psql -U postgres -c "ALTER ROLE testuser WITH LOGIN PASSWORD 'testpass'";
          ${pkgs.postgresql}/bin/psql -U postgres -c "ALTER DATABASE testdb OWNER TO testuser;";
        '';
      };

      services = {
        postgresql = {
          enable = true;
          ensureDatabases = [ "testdb" ];
          ensureUsers = [{ name = "testuser"; }];
          authentication = ''
            local testdb testuser scram-sha-256
          '';
        };

        pgbouncer = {
          enable = true;
          openFirewall = true;
          settings = {
            pgbouncer = {
              listen_addr = "localhost";
              auth_type = "scram-sha-256";
              auth_file = builtins.toFile "pgbouncer-users.txt" ''
                "testuser" "testpass"
              '';
            };
            databases = {
              test = "host=/run/postgresql port=5432 auth_user=testuser dbname=testdb";
            };
          };
        };
      };
    };
  };

  testScript = ''
    start_all()
    one.wait_for_unit("default.target")
    one.require_unit_state("pgbouncer.service", "active")

    # Test if we can make a query through PgBouncer
    one.wait_until_succeeds(
        "psql 'postgres://testuser:testpass@localhost:6432/test' -c 'SELECT 1;'"
    )
  '';
})