Test loading a cached zone that has lines consisting of blanks

testdata/blanks_cached_zone.tdir/blanks.example.com

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+; Test if the zone parser accepts various blank lines
+@		IN	SOA	ns1.example.com dnsmaster.example.com. (
+				1	; Serial
+				      7200	; Refresh 2 hours
+				      3600	; Retry   1 hour
+				   2419200	; expire - 4 weeks
+				      3600	; Minimum 1 hour     
+)
+		7200	IN	NS      ns1
+ns1			IN	A	192.0.2.1
+			IN	AAAA	2001:dbb::1
+; completely blank line
+
+; line with one space
+ 
+; line with one tab
+	
+; line with spaces followed by comment
+  ; test comment
+; line with tabs followed by comment
+		; test comment
+; Final line with spaces, tabs and comment
+ 	 	; test comment

testdata/blanks_cached_zone.tdir/blanks_cached_zone.conf

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+server:
+	verbosity: 7
+	# num-threads: 1
+	interface: 127.0.0.1
+	port: @PORT@
+	use-syslog: no
+	directory: ""
+	pidfile: "unbound.pid"
+	chroot: ""
+	username: ""
+	do-not-query-localhost: no
+	use-caps-for-id: yes
+	module-config: "respip validator iterator"
+
+auth-zone:
+        name: blanks.example.com
+        zonefile: "blanks.example.com"
+	url: "https://www.example.com/blanks.example.com.zone"
+	for-upstream: yes
+	for-downstream: yes
+
+#rpz:
+#        name: blanks.example.com
+#        zonefile: "blanks.example.com"
+#	url: "https://127.0.0.1:@TOPORT@/blanks.example.com.zone"

testdata/blanks_cached_zone.tdir/blanks_cached_zone.dsc

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+BaseName: blanks_cached_zone
+Version: 1.0
+Description: Check if a cached zone with blank line can be loaded
+CreationDate: Wed 08 Jun 2022 11:16:25 AM CEST
+Maintainer: Philip Homburg
+Category: 
+Component:
+CmdDepends: 
+Depends: 
+Help:
+Pre: blanks_cached_zone.pre
+Post: blanks_cached_zone.post
+Test: blanks_cached_zone.test
+AuxFiles: 
+Passed:
+Failure:

testdata/blanks_cached_zone.tdir/blanks_cached_zone.post

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+# #-- blanks_cached_zone.post --#
+# source the master var file when it's there
+[ -f ../.tpkg.var.master ] && source ../.tpkg.var.master
+# source the test var file when it's there
+[ -f .tpkg.var.test ] && source .tpkg.var.test
+#
+# do your teardown here
+PRE="../.."
+. ../common.sh
+kill_pid $UNBOUND_PID

testdata/blanks_cached_zone.tdir/blanks_cached_zone.pre

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+# #-- blanks_cached_zone.pre--#
+# source the master var file when it's there
+[ -f ../.tpkg.var.master ] && source ../.tpkg.var.master
+# use .tpkg.var.test for in test variable passing
+[ -f .tpkg.var.test ] && source .tpkg.var.test
+
+PRE="../.."
+. ../common.sh
+get_random_port 2
+UNBOUND_PORT=$RND_PORT
+echo "UNBOUND_PORT=$UNBOUND_PORT" >> .tpkg.var.test
+
+# make config file
+sed -e 's/@PORT\@/'$UNBOUND_PORT'/' < blanks_cached_zone.conf > ub.conf
+# start unbound in the background
+$PRE/unbound -d -c ub.conf >unbound.log 2>&1 &
+UNBOUND_PID=$!
+echo "UNBOUND_PID=$UNBOUND_PID" >> .tpkg.var.test
+
+cat .tpkg.var.test
+wait_unbound_up unbound.log
+

testdata/blanks_cached_zone.tdir/blanks_cached_zone.test

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+# #-- blanks_cached_zone.test --#
+# source the master var file when it's there
+[ -f ../.tpkg.var.master ] && source ../.tpkg.var.master
+# use .tpkg.var.test for in test variable passing
+[ -f .tpkg.var.test ] && source .tpkg.var.test
+
+PRE="../.."
+# do the test
+TARGET=ns1.blanks.example.com.
+echo "> dig $TARGET"
+dig @localhost -p $UNBOUND_PORT $TARGET | tee outfile
+if grep SERVFAIL outfile; then
+	echo "> try again"
+	dig @localhost -p $UNBOUND_PORT $TARGET | tee outfile
+fi
+if grep SERVFAIL outfile; then
+	echo "> try again"
+	sleep 1
+	dig @localhost -p $UNBOUND_PORT $TARGET | tee outfile
+fi
+if grep SERVFAIL outfile; then
+	echo "> try again"
+	sleep 1
+	dig @localhost -p $UNBOUND_PORT $TARGET | tee outfile
+fi
+if grep SERVFAIL outfile; then
+	echo "> try again"
+	sleep 1
+	dig @localhost -p $UNBOUND_PORT $TARGET | tee outfile
+fi
+if grep SERVFAIL outfile; then
+	echo "> try again"
+	sleep 10
+	dig @localhost -p $UNBOUND_PORT $TARGET | tee outfile
+fi
+if grep SERVFAIL outfile; then
+	echo "> try again"
+	sleep 10
+	dig @localhost -p $UNBOUND_PORT $TARGET | tee outfile
+fi
+echo "> cat logfiles"
+cat unbound.log
+echo "> check answer"
+if grep "192.0.2.1" outfile; then
+	echo "OK"
+else
+	echo "Not OK"
+	exit 1
+fi
+
+exit 0