Check casefolding sz

Change-Id: Ife21e8aefed103a2b00f567aadad87132bf54819
diff --git a/t/real/gingko.t b/t/real/gingko.t
index b124d20..206c4e3 100644
--- a/t/real/gingko.t
+++ b/t/real/gingko.t
@@ -126,6 +126,11 @@
 like($token, qr!gingko/p:ADJA!, 'data');
 like($token, qr!gingko/l:heutig!, 'data');
 
+$token = join('||', @{$output->{data}->{stream}->[157]});
+like($token, qr!i:massnahme!, 'data');
+like($token, qr!s:Maßnahme!, 'data');
+
+
 # Check Gingko meta in Koral
 my $koral = decode_json($tokens->to_json(0.4));