libnss-mysql: add test

pkgs/os-specific/linux/libnss-mysql/default.nix

@@ -1,4 +1,11 @@
-{ lib, stdenv, fetchFromGitHub, autoreconfHook, which, libmysqlclient }:
+{ lib
+, nixosTests
+, stdenv
+, fetchFromGitHub
+, autoreconfHook
+, which
+, libmysqlclient
+}:
 
 stdenv.mkDerivation rec {
   pname = "libnss-mysql";
@@ -20,6 +27,10 @@ stdenv.mkDerivation rec {
     rm -r $out/etc
   '';
 
+  passthru.tests = {
+    inherit (nixosTests) auth-mysql;
+  };
+
   meta = with lib; {
     description = "MySQL module for the Solaris Nameservice Switch (NSS)";
     homepage = "https://github.com/saknopper/libnss-mysql";