diff --git a/tools/test/test_cases b/tools/test/test_cases
index 5adff8fa8..20eebe644 100644
--- a/tools/test/test_cases
+++ b/tools/test/test_cases
@@ -139,3 +139,5 @@ tlvdata,test_n3,tlv3,varlen_struct,test_short_id,len_varlen
 # varletest_n varsized structs
 tlvdata,test_n3,tlv3,len_varlenvarsize,u8,
 tlvdata,test_n3,tlv3,varlen_varsize,test_features,len_varlenvarsize
+# implicit length
+tlvdata,test_n3,tlv3,remainder,byte,...