nixosTests.rasdaemon: init module test

and passthru test in the package

nixos/tests/all-tests.nix

···
   rabbitmq = handleTest ./rabbitmq.nix {};
   radarr = handleTest ./radarr.nix {};
   radicale = handleTest ./radicale.nix {};
+  rasdaemon = handleTest ./rasdaemon.nix {};
   redis = handleTest ./redis.nix {};
   redmine = handleTest ./redmine.nix {};
   restartByActivationScript = handleTest ./restart-by-activation-script.nix {};

nixos/tests/rasdaemon.nix

···
+import ./make-test-python.nix ({ pkgs, ... } : {
+  name = "rasdaemon";
+  meta = with pkgs.lib.maintainers; {
+    maintainers = [ evils ];
+  };
+
+  machine = { pkgs, ... }: {
+    imports = [ ../modules/profiles/minimal.nix ];
+    hardware.rasdaemon = {
+      enable = true;
+      # should be enabled by default, just making sure
+      record = true;
+      # nonsense label
+      labels = ''
+        vendor: none
+          product: none
+          model: none
+            DIMM_0: 0.0.0;
+      '';
+    };
+  };
+
+  testScript =
+    ''
+      start_all()
+      machine.wait_for_unit("multi-user.target")
+      # confirm rasdaemon is running and has a valid database
+      # some disk errors detected in qemu for some reason ¯\_(ツ)_/¯
+      machine.succeed("ras-mc-ctl --errors | tee /dev/stderr | grep -q 'No .* errors.'")
+      # confirm the supplied labels text made it into the system
+      machine.succeed("grep -q 'vendor: none' /etc/ras/dimm_labels.d/labels >&2")
+      machine.shutdown()
+    '';
+})

pkgs/os-specific/linux/rasdaemon/default.nix

···
 , autoreconfHook
 , glibcLocales, kmod, coreutils, perl
 , dmidecode, hwdata, sqlite
+, nixosTests
 }:
 
 stdenv.mkDerivation rec {
···
     substituteInPlace $out/bin/ras-mc-ctl \
       --replace 'find_prog ("dmidecode")' '"${dmidecode}/bin/dmidecode"'
   '';
+
+  passthru.tests = nixosTests.rasdaemon;
 
   meta = with lib; {
     description = ''