depot/third_party/nixpkgs/nixos/tests/systemd-nspawn.nix

import ./make-test-python.nix (
  { pkgs, lib, ... }:
  let
    gpgKeyring = import ./common/gpg-keyring.nix { inherit pkgs; };

    nspawnImages = (
      pkgs.runCommand "localhost"
        {
          buildInputs = [
            pkgs.coreutils
            pkgs.gnupg
          ];
        }
        ''
          mkdir -p $out
          cd $out

          # produce a testimage.raw
          dd if=/dev/urandom of=$out/testimage.raw bs=$((1024*1024+7)) count=5

          # produce a testimage2.tar.xz, containing the hello store path
          tar cvJpf testimage2.tar.xz ${pkgs.hello}

          # produce signature(s)
          sha256sum testimage* > SHA256SUMS
          export GNUPGHOME="$(mktemp -d)"
          cp -R ${gpgKeyring}/* $GNUPGHOME
          gpg --batch --sign --detach-sign --output SHA256SUMS.gpg SHA256SUMS
        ''
    );
  in
  {
    name = "systemd-nspawn";

    nodes = {
      server =
        { pkgs, ... }:
        {
          networking.firewall.allowedTCPPorts = [ 80 ];
          services.nginx = {
            enable = true;
            virtualHosts."server".root = nspawnImages;
          };
        };
      client =
        { pkgs, ... }:
        {
          environment.etc."systemd/import-pubring.gpg".source = "${gpgKeyring}/pubkey.gpg";
        };
    };

    testScript = ''
      start_all()

      server.wait_for_unit("nginx.service")
      client.systemctl("start network-online.target")
      client.wait_for_unit("network-online.target")
      client.succeed("machinectl pull-raw --verify=signature http://server/testimage.raw")
      client.succeed(
          "cmp /var/lib/machines/testimage.raw ${nspawnImages}/testimage.raw"
      )
      client.succeed("machinectl pull-tar --verify=signature http://server/testimage2.tar.xz")
      client.succeed(
          "cmp /var/lib/machines/testimage2/${pkgs.hello}/bin/hello ${pkgs.hello}/bin/hello"
      )
    '';
  }
)