languagetool: add test

pkgs/tools/text/languagetool/default.nix

@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchzip, jre, makeWrapper }:
+{ lib, stdenv, fetchzip, jre, makeWrapper, nixosTests }:
 
 stdenv.mkDerivation rec {
   pname = "LanguageTool";
@@ -28,6 +28,8 @@ stdenv.mkDerivation rec {
     runHook postInstall
   '';
 
+  passthru.tests.languagetool = nixosTests.languagetool;
+
   meta = with lib; {
     homepage = "https://languagetool.org";
     sourceProvenance = with sourceTypes; [ binaryBytecode ];