Those test scripts are in git but not in the release tarball.
https://github.com/miniupnp/miniupnp/tree/master/miniupnpd

diff --git a/testgetifaddr.sh b/testgetifaddr.sh
new file mode 100644
index 0000000..7ad56d9
--- /dev/null
+++ b/testgetifaddr.sh
@@ -0,0 +1,29 @@
+#!/bin/sh
+# $Id: testgetifaddr.sh,v 1.2 2015/09/22 14:48:09 nanard Exp $
+
+OS=`uname -s`
+case $OS in
+	*BSD | Darwin | SunOS)
+	NS="`which netstat`" || exit 1
+	IFCONFIG="`which ifconfig`" || exit 1
+	EXTIF="`$NS -r -f inet | grep 'default' | awk '{ print $NF  }' `" || exit 1
+	EXTIP="`$IFCONFIG $EXTIF | awk '/inet / { print $2 }' `"
+	;;
+	*)
+	IP="`which ip`" || exit 1
+	EXTIF="`LC_ALL=C $IP -4 route | grep 'default' | sed -e 's/.*dev[[:space:]]*//' -e 's/[[:space:]].*//'`" || exit 1
+	EXTIP="`LC_ALL=C $IP -4 addr show $EXTIF | awk '/inet/ { print $2 }' | cut -d "/" -f 1`"
+	;;
+esac
+
+#echo "Interface : $EXTIF   IP address : $EXTIP"
+RES=`./testgetifaddr $EXTIF | head -n1 | sed 's/Interface .* has IP address \(.*\)\./\1/'` || exit 1
+
+
+if [ "$RES" = "$EXTIP" ] ; then
+	echo "testgetifaddr test OK"
+	exit 0
+else
+	echo "testgetifaddr test FAILED : $EXTIP != $RES"
+	exit 1
+fi
diff --git a/testupnppermissions.sh b/testupnppermissions.sh
new file mode 100644
index 0000000..b7bee35
--- /dev/null
+++ b/testupnppermissions.sh
@@ -0,0 +1,56 @@
+#!/bin/sh
+# $Id: testupnppermissions.sh,v 1.2 2015/09/22 15:12:14 nanard Exp $
+
+RULE_1="allow 1-20000 11.12.13.14/22 1234"
+RULEA_1="allow 1-20000 0b0c0d0e/fffffc00 1234-1234"
+RULEB_1="allow 1-20000 11.12.13.14/255.255.252.0 1234-1234"
+RULE_2="deny 55 21.22.23.24/17 555-559"
+RULEA_2="deny 55-55 15161718/ffff8000 555-559"
+RULEB_2="deny 55-55 21.22.23.24/255.255.128.0 555-559"
+
+i=1
+s=1
+./testupnppermissions "$RULE_1" "$RULE_2" | while read l;
+do
+	if [ -z "$l" ]; then i=$(($i+1)); s=1; else
+		#echo "$i $s : checking '$l'"
+		case $s in
+			1)
+			val=$(eval echo "\${RULE_$i}")
+			if [ "$i '$val'" != "$l" ] ; then
+				exit $s
+			fi;;
+			2)
+			val=$(eval echo "\${RULEA_$i}")
+			if [ "Permission read successfully" = "$l" ] ; then
+				s=$(($s+1))
+			elif [ "perm rule added : $val" != "$l" ] ; then
+				exit $s
+			fi;;
+			3)
+			if [ "Permission read successfully" != "$l" ] ; then
+				exit $s
+			fi;;
+			4)
+			val=$(eval echo "\${RULEB_$i}")
+			if [ "$val" != "$l" ] ; then
+				exit $s
+			fi;;
+			*)
+			echo "$i $s : $l"
+			exit $s
+			;;
+		esac
+		s=$(($s+1))
+	fi
+done
+
+# retrieve return status from subshell
+r=$?
+
+if [ $r -eq 0 ] ; then
+	echo "testupnppermissions tests OK"
+else
+	echo "testupnppermissions tests FAILED"
+fi
+exit $r