nixpkgs/nixos/tests/ocsinventory-agent.nix

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

  nodes.machine = { pkgs, ... }: {
    services.ocsinventory-agent = {
      enable = true;
      settings = {
        debug = true;
        local = "/var/lib/ocsinventory-agent/reports";
        tag = "MY_INVENTORY_TAG";
      };
    };
  };

  testScript = ''
    path = "/var/lib/ocsinventory-agent/reports"

    # Run the agent to generate the inventory file in offline mode
    start_all()
    machine.succeed("mkdir -p {}".format(path))
    machine.wait_for_unit("ocsinventory-agent.service")
    machine.wait_until_succeeds("journalctl -u ocsinventory-agent.service | grep 'Inventory saved in'")

    # Fetch the path to the generated inventory file
    report_file = machine.succeed("find {}/*.ocs -type f | head -n1".format(path))

    with subtest("Check the tag value"):
      tag = machine.succeed(
        "${pkgs.libxml2}/bin/xmllint --xpath 'string(/REQUEST/CONTENT/ACCOUNTINFO/KEYVALUE)' {}".format(report_file)
      ).rstrip()
      assert tag == "MY_INVENTORY_TAG", f"tag is not valid, was '{tag}'"
  '';
})