nixos/tests: systemd-resolved

  systemd-oomd = handleTest ./systemd-oomd.nix {};

  systemd-portabled = handleTest ./systemd-portabled.nix {};

  systemd-repart = handleTest ./systemd-repart.nix {};

  systemd-resolved = handleTest ./systemd-resolved.nix {};

  systemd-shutdown = handleTest ./systemd-shutdown.nix {};

  systemd-sysupdate = runTest ./systemd-sysupdate.nix;

  systemd-sysusers-mutable = runTest ./systemd-sysusers-mutable.nix;

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

  name = "systemd-resolved";

  meta.maintainers = [ lib.maintainers.elvishjerricco ];

  nodes.server = { lib, config, ... }: let

    exampleZone = pkgs.writeTextDir "example.com.zone" ''

      @ SOA ns.example.com. noc.example.com. 2019031301 86400 7200 3600000 172800

      @       A       ${(lib.head config.networking.interfaces.eth1.ipv4.addresses).address}

      @       AAAA    ${(lib.head config.networking.interfaces.eth1.ipv6.addresses).address}

    '';

  in {

    networking.firewall.enable = false;

    networking.useDHCP = false;

    networking.interfaces.eth1.ipv6.addresses = lib.mkForce [

      { address = "fd00::1"; prefixLength = 64; }

    ];

    services.knot = {

      enable = true;

      settings = {

        server.listen = [

          "0.0.0.0@53"

          "::@53"

        ];

        template.default.storage = exampleZone;

        zone."example.com".file = "example.com.zone";

      };

    };

  };

  nodes.client = { nodes, ... }: let

    inherit (lib.head nodes.server.networking.interfaces.eth1.ipv4.addresses) address;

  in {

    networking.nameservers = [ address ];

    networking.interfaces.eth1.ipv6.addresses = lib.mkForce [

      { address = "fd00::2"; prefixLength = 64; }

    ];

    services.resolved.enable = true;

    services.resolved.fallbackDns = [ ];

    networking.useNetworkd = true;

    networking.useDHCP = false;

    systemd.network.networks."40-eth0".enable = false;

  };

  testScript = { nodes, ... }: let

    address4 = (lib.head nodes.server.networking.interfaces.eth1.ipv4.addresses).address;

    address6 = (lib.head nodes.server.networking.interfaces.eth1.ipv6.addresses).address;

  in ''

    start_all()

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

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

    query = client.succeed("resolvectl query example.com")

    assert "${address4}" in query

    assert "${address6}" in query

    client.succeed("ping -4 -c 1 example.com")

    client.succeed("ping -6 -c 1 example.com")

  '';

})