test: add test for function ip_is_valid

Signed-off-by: Jonatan Schlag <jonatan.schlag@ipfire.org>

diff --git a/test/functions/ip/ip_is_valid b/test/functions/ip/ip_is_valid
new file mode 100755 (executable)
index 0000000..d653c9b
--- /dev/null
+++ b/test/functions/ip/ip_is_valid
@@ -0,0 +1,27 @@
+#!/bin/bash
+
+. ${networkdir}/functions
+
+. ${testdir}/constants.sh
+
+failed=0
+
+for address in ${VALID_ADDRESSES[@]}; do
+       if ip_is_valid ${address}; then
+               echo "OK: IP address ${address} is valid"
+       else
+               echo "ERROR: IP address ${address} is invalid"
+               failed=1
+       fi
+done
+
+for address in ${INVALID_ADDRESSES[@]}; do
+       if ! ip_is_valid ${address}; then
+               echo "OK: IP address ${address} is invalid"
+       else
+               echo "ERROR: IP address ${address} is valid"
+               failed=1
+       fi
+done
+
+exit ${failed}