system: T5877: Update smoketests for domain-search and related config

In addition to testing for shortening the domain-search path, add and
improve tests for other resolv.conf entries.

1 files changed, 112 insertions, 0 deletions

diff --git a/smoketest/scripts/cli/test_system_resolvconf.py b/smoketest/scripts/cli/test_system_resolvconf.py
new file mode 100755
index 000000000..d8726a301
--- /dev/null
+++ b/smoketest/scripts/cli/test_system_resolvconf.py
@@ -0,0 +1,112 @@
+#!/usr/bin/env python3
+#
+# Copyright (C) 2019-2023 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 re
+import unittest
+
+from base_vyostest_shim import VyOSUnitTestSHIM
+
+from vyos.utils.file import read_file
+
+RESOLV_CONF = '/etc/resolv.conf'
+
+name_servers = ['192.0.2.10', '2001:db8:1::100']
+domain_name = 'vyos.net'
+domain_search = ['vyos.net', 'vyos.io']
+
+base_path_nameserver = ['system', 'name-server']
+base_path_domainname = ['system', 'domain-name']
+base_path_domainsearch = ['system', 'domain-search']
+
+def get_name_servers():
+    resolv_conf = read_file(RESOLV_CONF)
+    return re.findall(r'\n?nameserver\s+(.*)', resolv_conf)
+
+def get_domain_name():
+    resolv_conf = read_file(RESOLV_CONF)
+    res = re.findall(r'\n?domain\s+(.*)', resolv_conf)
+    return res[0] if res else None
+
+def get_domain_searches():
+    resolv_conf = read_file(RESOLV_CONF)
+    res = re.findall(r'\n?search\s+(.*)', resolv_conf)
+    return res[0].split() if res else []
+
+class TestSystemResolvConf(VyOSUnitTestSHIM.TestCase):
+    @classmethod
+    def setUpClass(cls):
+        super(TestSystemResolvConf, cls).setUpClass()
+       # Clear out current configuration to allow running this test on a live system
+        cls.cli_delete(cls, base_path_nameserver)
+        cls.cli_delete(cls, base_path_domainname)
+        cls.cli_delete(cls, base_path_domainsearch)
+
+    def tearDown(self):
+        # Delete test entries servers
+        self.cli_delete(base_path_nameserver)
+        self.cli_delete(base_path_domainname)
+        self.cli_delete(base_path_domainsearch)
+        self.cli_commit()
+
+    def test_nameserver(self):
+        # Check if server is added to resolv.conf
+        for s in name_servers:
+            self.cli_set(base_path_nameserver + [s])
+        self.cli_commit()
+
+        for s in get_name_servers():
+            self.assertTrue(s in name_servers)
+
+        # Test if a deleted server disappears from resolv.conf
+        for s in name_servers:
+          self.cli_delete(base_path_nameserver + [s])
+        self.cli_commit()
+
+        for s in get_name_servers():
+            self.assertTrue(s not in name_servers)
+
+    def test_domainname(self):
+        # Check if domain-name is added to resolv.conf
+        self.cli_set(base_path_domainname + [domain_name])
+        self.cli_commit()
+
+        self.assertEqual(get_domain_name(), domain_name)
+
+        # Test if domain-name disappears from resolv.conf
+        self.cli_delete(base_path_domainname + [domain_name])
+        self.cli_commit()
+
+        self.assertTrue(get_domain_name() is None)
+
+    def test_domainsearch(self):
+        # Check if domain-search is added to resolv.conf
+        for s in domain_search:
+            self.cli_set(base_path_domainsearch + [s])
+        self.cli_commit()
+
+        for s in get_domain_searches():
+            self.assertTrue(s in domain_search)
+
+        # Test if domain-search disappears from resolv.conf
+        for s in domain_search:
+            self.cli_delete(base_path_domainsearch + [s])
+        self.cli_commit()
+
+        for s in get_domain_searches():
+            self.assertTrue(s not in domain_search)
+
+if __name__ == '__main__':
+    unittest.main(verbosity=2)