nat: initial simple test

1 files changed, 63 insertions, 0 deletions

diff --git a/scripts/cli/test_nat.py b/scripts/cli/test_nat.py
new file mode 100755
index 000000000..fdc1ba7de
--- /dev/null
+++ b/scripts/cli/test_nat.py
@@ -0,0 +1,63 @@
+#!/usr/bin/env python3
+#
+# Copyright (C) 2019-2020 VyOS maintainers and contributors
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 or later as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+import os
+import jmespath
+import json
+import unittest
+
+from vyos.configsession import ConfigSession, ConfigSessionError
+from vyos.util import cmd
+
+base_path = ['nat']
+snat_pattern = 'nftables[?rule].rule[?chain].{chain: chain, comment: comment, address: { network: expr[].match.right.prefix.addr | [0], prefix: expr[].match.right.prefix.len | [0]}}'
+
+class TestNAT(unittest.TestCase):
+    def setUp(self):
+        self.session = ConfigSession(os.getpid())
+        # ensure we can also run this test on a live system - so lets clean
+        # out the current configuration :)
+        self.session.delete(base_path)
+
+    def tearDown(self):
+        del self.session
+
+    def test_source_nat(self):
+        """ Check if SNMP can be configured and service runs """
+
+        path = base_path + ['source']
+        network = '192.168.0.0/16'
+        self.session.set(path + ['rule', '1', 'destination', 'address', network])
+        self.session.set(path + ['rule', '1', 'exclude'])
+
+        # check validate() - outbound-interface must be defined
+        with self.assertRaises(ConfigSessionError):
+            self.session.commit()
+
+        self.session.set(path + ['rule', '1', 'outbound-interface', 'any'])
+        self.session.commit()
+
+        tmp = cmd('sudo nft -j list table nat')
+        nftable_json = json.loads(tmp)
+        condensed_json = jmespath.search(snat_pattern, nftable_json)[0]
+
+        self.assertEqual(condensed_json['comment'], 'DST-NAT-1')
+        self.assertEqual(condensed_json['address']['network'], network.split('/')[0])
+        self.assertEqual(str(condensed_json['address']['prefix']), network.split('/')[1])
+
+if __name__ == '__main__':
+    unittest.main()
+