Always percentage encode data URIs

Change-Id: I1f41f6bc15acb54d5e8d695304ce11120c950e06
diff --git a/t/real/wpe.t b/t/real/wpe.t
index 33a4236..08be909 100644
--- a/t/real/wpe.t
+++ b/t/real/wpe.t
@@ -38,7 +38,7 @@
 
 is($meta->{A_reference}, 'Generation X, In: Wikipedia - URL:http://en.wikipedia.org/wiki/Generation_X: Wikipedia, 2015', 'Reference');
 
-is($meta->{A_externalLink}, 'data:application/x.korap-link;title=Wikipedia,http://en.wikipedia.org/wiki/Generation_X', 'link');
+is($meta->{A_externalLink}, 'data:application/x.korap-link;title=Wikipedia,http%3A%2F%2Fen.wikipedia.org%2Fwiki%2FGeneration_X', 'link');
 
 is($meta->{'S_availability'}, 'CC-BY-SA', 'Availability');
 is($meta->{'S_language'}, 'en', 'Language');
@@ -102,7 +102,7 @@
 is($link->{'@type'}, 'koral:field', 'attachement');
 is($link->{type}, 'type:attachement', 'attachement');
 is($link->{key}, 'externalLink', 'attachement');
-is($link->{value}, 'data:application/x.korap-link;title=Wikipedia,http://en.wikipedia.org/wiki/Generation_X', 'attachement');
+is($link->{value}, 'data:application/x.korap-link;title=Wikipedia,http%3A%2F%2Fen.wikipedia.org%2Fwiki%2FGeneration_X', 'attachement');
 
 done_testing;
 __END__