python3Packages.vdirsyncer: add NixOS test to passthru.tests

pkgs/development/python-modules/vdirsyncer/default.nix

@@ -17,6 +17,7 @@
   pytest-asyncio,
   trustme,
   aioresponses,
+  nixosTests,
   versionCheckHook,
 }:
 
@@ -70,6 +71,10 @@ buildPythonPackage rec {
     versionCheckHook
   ];
 
+  passthru.tests = {
+    inherit (nixosTests) vdirsyncer;
+  };
+
   meta = {
     description = "Synchronize calendars and contacts";
     homepage = "https://github.com/pimutils/vdirsyncer";