hwinfo: add version test

pkgs/by-name/hw/hwinfo/package.nix

@@ -8,6 +8,7 @@
   perl,
   kmod,
   systemdMinimal,
+  testers,
 }:
 
 stdenv.mkDerivation (finalAttrs: {
@@ -60,6 +61,10 @@ stdenv.mkDerivation (finalAttrs: {
 
   installFlags = [ "DESTDIR=$(out)" ];
 
+  passthru.tests = {
+    version = testers.testVersion { package = finalAttrs.finalPackage; };
+  };
+
   meta = with lib; {
     description = "Hardware detection tool from openSUSE";
     license = licenses.gpl2Only;