Add a system test for records with unknown types/classes. There are probably

a lot more things that could be tested here.

bin/tests/system/unknown/ns1/example-in.db

@@ -0,0 +1,49 @@
+; Copyright (C) 2000  Internet Software Consortium.
+;
+; Permission to use, copy, modify, and distribute this software for any
+; purpose with or without fee is hereby granted, provided that the above
+; copyright notice and this permission notice appear in all copies.
+;
+; THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM
+; DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
+; IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
+; INTERNET SOFTWARE CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT,
+; INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
+; FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
+; NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
+; WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+; $Id: example-in.db,v 1.1 2000/11/10 03:05:54 bwelling Exp $
+
+$TTL 300	; 5 minutes
+@			SOA	mname1. . (
+				2000062101 ; serial
+				20         ; refresh (20 seconds)
+				20         ; retry (20 seconds)
+				1814400    ; expire (3 weeks)
+				3600       ; minimum (1 hour)
+				)
+			NS	ns
+ns			A	10.53.0.1
+
+a1			A	\# 4 0A000001
+a2			A	\# 4 0A 00 00 01
+a3		CLASS1	A	10.0.0.1
+a4		CLASS1	A	\# 4 0A000001
+a5			TYPE1	10.0.0.1
+a6			TYPE1	\# 4 0A000001
+a7		CLASS1	TYPE1	10.0.0.1
+a8		CLASS1	TYPE1	\# 4 0A000001
+a9		IN	TYPE1	10.0.0.1
+a10		IN	TYPE1	\# 4 0A000001
+
+txt1		IN	TXT	"hello"
+txt2		CLASS1	TXT	"hello"
+txt3		IN	TYPE16	"hello"
+txt4		CLASS1	TYPE16	"hello"
+txt5			TXT	\# 6 0568656C6C6F
+txt6			TYPE16	\# 6 0568656C6C6F
+
+unk1			TYPE123	\# 1 00
+unk2		CLASS1	TYPE123	\# 1 00
+unk3		IN	TYPE123	\# 1 00