diff --git a/t/real/wdd.t b/t/real/wdd.t
index 2327677..2b44500 100644
--- a/t/real/wdd.t
+++ b/t/real/wdd.t
@@ -48,6 +48,8 @@
 REF
 is($meta->{S_language}, 'de', 'Language');
 
+is($meta->{A_externalLink}, 'data:application/x.korap-link;title=Wikipedia,http://de.wikipedia.org/wiki/Diskussion:Gunter_A._Pilz', 'link');
+
 is($meta->{T_corpus_title}, 'Wikipedia', 'Correct Corpus title');
 ok(!$meta->{T_corpus_sub_title}, 'Correct Corpus sub title');
 ok(!$meta->{T_corpus_author}, 'Correct Corpus author');
@@ -274,6 +276,9 @@
 is($doc->doc_sigle, 'WDD15/A79', 'Correct document sigle');
 is($doc->corpus_sigle, 'WDD15', 'Correct corpus sigle');
 
+$meta = $doc->meta;
+is($meta->{A_externalLink}, 'data:application/x.korap-link;title=Wikipedia,http://de.wikipedia.org/wiki/Diskussion:Arteria_interossea_communis', 'link');
+
 # Get tokenization
 $tokens = KorAP::XML::Tokenizer->new(
   path => $doc->path,
diff --git a/t/real/wpd.t b/t/real/wpd.t
index 344c636..517f9be 100644
--- a/t/real/wpd.t
+++ b/t/real/wpd.t
@@ -43,6 +43,9 @@
 ok(!$meta->{T_corpus_title}, 'Correct Corpus title');
 ok(!$meta->{T_corpus_sub_title}, 'Correct Corpus Sub title');
 
+# This link is broken, but that's due to the data
+is($meta->{A_externalLink}, 'data:application/x.korap-link;title=Wikipedia,http://de.wikipedia.org', 'No link');
+
 # Tokenization
 use_ok('KorAP::XML::Tokenizer');
 
@@ -96,6 +99,9 @@
 is($doc->doc_sigle, 'WPD15/W28', 'Correct document sigle');
 is($doc->corpus_sigle, 'WPD15', 'Correct corpus sigle');
 
+$meta = $doc->meta;
+is($meta->{A_externalLink}, 'data:application/x.korap-link;title=Wikipedia,http://de.wikipedia.org/wiki/Wolfgang_Krebs_(Schauspieler)', 'link');
+
 # Get tokenization
 $tokens = KorAP::XML::Tokenizer->new(
   path => $doc->path,
@@ -126,6 +132,9 @@
 
 is($doc->text_sigle, 'WPD15/U43/34816', 'Correct text sigle');
 
+$meta = $doc->meta;
+is($meta->{A_externalLink}, 'data:application/x.korap-link;title=Wikipedia,http://de.wikipedia.org/wiki/Universitätsbibliothek_Augsburg', 'link');
+
 # Tokenization
 use_ok('KorAP::XML::Tokenizer');
 
diff --git a/t/real/wpe.t b/t/real/wpe.t
index db626f9..a3413d2 100644
--- a/t/real/wpe.t
+++ b/t/real/wpe.t
@@ -34,6 +34,8 @@
 
 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->{'S_availability'}, 'CC-BY-SA', 'Availability');
 is($meta->{'S_language'}, 'en', 'Language');
 
@@ -88,5 +90,14 @@
 is($stream->[20]->[4], 'tt/l:historian', 'Treetagger');
 is($stream->[20]->[5], 'tt/p:NNS', 'Treetagger');
 
+
+my $koral = decode_json($tokens->to_json(0.4));
+
+my $link = $koral->{fields}->[5];
+is($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');
+
 done_testing;
 __END__