Always percentage encode data URIs

Change-Id: I1f41f6bc15acb54d5e8d695304ce11120c950e06
diff --git a/t/meta_artificial.t b/t/meta_artificial.t
index 777d14d..e6c3d10 100644
--- a/t/meta_artificial.t
+++ b/t/meta_artificial.t
@@ -52,6 +52,13 @@
 is($meta->{S_text_type}, 'Zeitung: Tageszeitung', 'No text_type');
 is($meta->{S_text_type_art}, 'Bericht', 'text_type art');
 
+use_ok('KorAP::XML::Meta::I5');
+
+$meta = new KorAP::XML::Meta::I5();
+
+is('data:application/x.korap-link;example=%20Das%20war%20einfach;title=Hallo%21,https%3A%2F%2Fwww.test.de',
+   $meta->korap_data_uri('https://www.test.de', title => 'Hallo!', example => ' Das war einfach'));
+
 done_testing;
 __END__