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path: root/nixos/tests/vscode-remote-ssh.nix
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import ./make-test-python.nix ({ lib, ... }@args: let
  pkgs = args.pkgs.extend (self: super: {
    stdenv = super.stdenv.override {
      config = super.config // {
        allowUnfreePredicate = pkg: builtins.elem (lib.getName pkg) [
          "vscode" "vscode-with-extensions" "vscode-extension-ms-vscode-remote-remote-ssh"
        ];
      };
    };
  });

  inherit (import ./ssh-keys.nix pkgs) snakeOilPrivateKey snakeOilPublicKey;

  inherit (pkgs.vscode.passthru) rev vscodeServer;
in {
  name = "vscode-remote-ssh";
  meta.maintainers = with lib.maintainers; [ Enzime ];

  nodes = let
    serverAddress = "192.168.0.2";
    clientAddress = "192.168.0.1";
  in {
    server = { ... }: {
      networking.interfaces.eth1.ipv4.addresses = [ { address = serverAddress; prefixLength = 24; } ];
      services.openssh.enable = true;
      users.users.root.openssh.authorizedKeys.keys = [ snakeOilPublicKey ];
      virtualisation.additionalPaths = with pkgs; [ patchelf bintools stdenv.cc.cc.lib ];
    };
    client = { ... }: {
      imports = [ ./common/x11.nix ./common/user-account.nix ];
      networking.interfaces.eth1.ipv4.addresses = [ { address = clientAddress; prefixLength = 24; } ];
      networking.hosts.${serverAddress} = [ "server" ];
      test-support.displayManager.auto.user = "alice";
      environment.systemPackages = [
        (pkgs.vscode-with-extensions.override {
          vscodeExtensions = [
            pkgs.vscode-extensions.ms-vscode-remote.remote-ssh
          ];
        })
      ];
    };
  };

  enableOCR = true;

  testScript = let
    jq = "${pkgs.jq}/bin/jq";

    sshConfig = builtins.toFile "ssh.conf" ''
      UserKnownHostsFile=/dev/null
      StrictHostKeyChecking=no
    '';

    vscodeConfig = builtins.toFile "settings.json" ''
      {
        "window.zoomLevel": 1,
        "security.workspace.trust.startupPrompt": "always"
      }
    '';
  in ''
    def connect_with_remote_ssh(screenshot, should_succeed):
      print(f"connect_with_remote_ssh({screenshot=}, {should_succeed=})")

      if server.execute("test -d ~/.vscode-server")[0] == 0:
        server.succeed("rm -r ~/.vscode-server")

      server.succeed("mkdir -p ~/.vscode-server/bin")
      server.succeed("cp -r ${vscodeServer} ~/.vscode-server/bin/${rev}")

      client.succeed("sudo -u alice code --remote=ssh-remote+root@server /root")
      client.wait_for_window("Visual Studio Code")

      client.wait_for_text("Do you trust the authors" if should_succeed else "Disconnected from SSH")
      client.screenshot(screenshot)

      if should_succeed:
        # Press the Don't Trust button
        client.send_key("tab")
        client.send_key("tab")
        client.send_key("tab")
        client.send_key("\n")
      else:
        # Close the error dialog
        client.send_key("esc")

      # Don't send Ctrl-q too quickly otherwise it might not get sent to VS Code
      client.sleep(1)
      client.send_key("ctrl-q")
      client.wait_until_fails("pidof code")


    start_all()
    server.wait_for_open_port(22)

    VSCODE_COMMIT = server.execute("${jq} -r .commit ${pkgs.vscode}/lib/vscode/resources/app/product.json")[1].rstrip()
    SERVER_COMMIT = server.execute("${jq} -r .commit ${vscodeServer}/product.json")[1].rstrip()

    print(f"{VSCODE_COMMIT=} {SERVER_COMMIT=}")
    assert VSCODE_COMMIT == SERVER_COMMIT, "VSCODE_COMMIT and SERVER_COMMIT do not match"

    client.wait_until_succeeds("ping -c1 server")
    client.succeed("sudo -u alice mkdir ~alice/.ssh")
    client.succeed("sudo -u alice install -Dm 600 ${snakeOilPrivateKey} ~alice/.ssh/id_ecdsa")
    client.succeed("sudo -u alice install ${sshConfig} ~alice/.ssh/config")
    client.succeed("sudo -u alice install -Dm 644 ${vscodeConfig} ~alice/.config/Code/User/settings.json")

    client.wait_for_x()
    client.wait_for_file("~alice/.Xauthority")
    client.succeed("xauth merge ~alice/.Xauthority")
    # Move the mouse out of the way
    client.succeed("${pkgs.xdotool}/bin/xdotool mousemove 0 0")

    with subtest("fails to connect when nixpkgs isn't available"):
      server.fail("nix-build '<nixpkgs>' -A hello")
      connect_with_remote_ssh(screenshot="no_node_installed", should_succeed=False)
      server.succeed("test -e ~/.vscode-server/bin/${rev}/node")
      server.fail("~/.vscode-server/bin/${rev}/node -v")

    with subtest("connects when server can patch Node"):
      server.succeed("mkdir -p /nix/var/nix/profiles/per-user/root/channels")
      server.succeed("ln -s ${pkgs.path} /nix/var/nix/profiles/per-user/root/channels/nixos")
      connect_with_remote_ssh(screenshot="build_node_with_nix", should_succeed=True)
  '';
})