prometheus-smartctl-exporter: add passthru.tests

pkgs/servers/monitoring/prometheus/smartctl-exporter/default.nix

@@ -1,6 +1,7 @@
 { lib
 , fetchFromGitHub
 , buildGoModule
+, nixosTests
 }:
 
 buildGoModule rec {
@@ -20,6 +21,8 @@ buildGoModule rec {
     "-X github.com/prometheus/common/version.Version=${version}"
   ];
 
+  passthru.tests = { inherit (nixosTests.prometheus-exporters) smartctl; };
+
   meta = with lib; {
     description = "Export smartctl statistics for Prometheus";
     homepage = "https://github.com/prometheus-community/smartctl_exporter";