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

import ./make-test-python.nix (
  {
    pkgs,
    latestKernel ? false,
    ...
  }:

  {
    name = "systemd-analyze";
    meta = with pkgs.lib.maintainers; {
      maintainers = [ raskin ];
    };

    nodes.machine =
      { pkgs, lib, ... }:
      {
        boot.kernelPackages = lib.mkIf latestKernel pkgs.linuxPackages_latest;
      };

    testScript = ''
      machine.wait_for_unit("multi-user.target")

      # We create a special output directory to copy it as a whole
      with subtest("Prepare output dir"):
          machine.succeed("mkdir systemd-analyze")


      # Save the output into a file with given name inside the common
      # output directory
      def run_systemd_analyze(args, name):
          tgt_dir = "systemd-analyze"
          machine.succeed(
              "systemd-analyze {} > {}/{} 2> {}/{}.err".format(
                  " ".join(args), tgt_dir, name, tgt_dir, name
              )
          )


      with subtest("Print statistics"):
          run_systemd_analyze(["blame"], "blame.txt")
          run_systemd_analyze(["critical-chain"], "critical-chain.txt")
          run_systemd_analyze(["dot"], "dependencies.dot")
          run_systemd_analyze(["plot"], "systemd-analyze.svg")

      # We copy the main graph into the $out (toplevel), and we also copy
      # the entire output directory with additional data
      with subtest("Copying the resulting data into $out"):
          machine.copy_from_vm("systemd-analyze/", "")
          machine.copy_from_vm("systemd-analyze/systemd-analyze.svg", "")
    '';
  }
)