Use prereq.sh for digdelv, dnssec, forward system tests

(cherry picked from commit 00b92bd064)

bin/tests/system/Makefile.am

@@ -113,9 +113,11 @@ TESTS +=			\
 	cookie			\
 	database		\
 	dialup			\
+	digdelv			\
 	dispatch		\
 	dlzexternal		\
 	dns64			\
+	dnssec			\
 	dnstap			\
 	doth			\
 	dsdigest		\
@@ -129,6 +131,7 @@ TESTS +=			\
 	filter-aaaa		\
 	fetchlimit		\
 	formerr			\
+	forward			\
 	geoip2			\
 	glue			\
 	idna			\
@@ -204,7 +207,6 @@ TESTS +=			\
 
 if HAVE_PYMOD_DNS
 if HAVE_PERLMOD_NET_DNS
-TESTS += digdelv dnssec forward
 if HAVE_PERLMOD_NET_DNS_NAMESERVER
 TESTS += chain
 endif HAVE_PERLMOD_NET_DNS_NAMESERVER

bin/tests/system/digdelv/prereq.sh

@@ -0,0 +1,28 @@
+#!/bin/sh
+
+# Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+#
+# SPDX-License-Identifier: MPL-2.0
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0.  If a copy of the MPL was not distributed with this
+# file, you can obtain one at https://mozilla.org/MPL/2.0/.
+#
+# See the COPYRIGHT file distributed with this work for additional
+# information regarding copyright ownership.
+
+. ../conf.sh
+
+if ! ${PYTHON} -c 'import dns'
+then
+	echo_i "python dns module is required"
+	exit 1
+fi
+
+if ! ${PERL} -MNet::DNS -e ''
+then
+	echo_i "perl Net::DNS module is required"
+	exit 1
+fi
+
+exit 0

bin/tests/system/dnssec/prereq.sh

@@ -0,0 +1,28 @@
+#!/bin/sh
+
+# Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+#
+# SPDX-License-Identifier: MPL-2.0
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0.  If a copy of the MPL was not distributed with this
+# file, you can obtain one at https://mozilla.org/MPL/2.0/.
+#
+# See the COPYRIGHT file distributed with this work for additional
+# information regarding copyright ownership.
+
+. ../conf.sh
+
+if ! ${PYTHON} -c 'import dns'
+then
+	echo_i "python dns module is required"
+	exit 1
+fi
+
+if ! ${PERL} -MNet::DNS -e ''
+then
+	echo_i "perl Net::DNS module is required"
+	exit 1
+fi
+
+exit 0

bin/tests/system/forward/prereq.sh

@@ -0,0 +1,28 @@
+#!/bin/sh
+
+# Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+#
+# SPDX-License-Identifier: MPL-2.0
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0.  If a copy of the MPL was not distributed with this
+# file, you can obtain one at https://mozilla.org/MPL/2.0/.
+#
+# See the COPYRIGHT file distributed with this work for additional
+# information regarding copyright ownership.
+
+. ../conf.sh
+
+if ! ${PYTHON} -c 'import dns'
+then
+	echo_i "python dns module is required"
+	exit 1
+fi
+
+if ! ${PERL} -MNet::DNS -e ''
+then
+	echo_i "perl Net::DNS module is required"
+	exit 1
+fi
+
+exit 0