smoketest: T7229: add syslog test to verify source-address for remote

Author: c-po

smoketest/scripts/cli/test_system_syslog.py

@@ -18,6 +18,7 @@
 
 from base_vyostest_shim import VyOSUnitTestSHIM
 
+from vyos.configsession import ConfigSessionError
 from vyos.utils.file import read_file
 from vyos.utils.process import cmd
 from vyos.utils.process import process_named_running
@@ -28,6 +29,8 @@
 
 base_path = ['system', 'syslog']
 
+dummy_interface = 'dum372874'
+
 def get_config(string=''):
     """
     Retrieve current "running configuration" from FRR
@@ -127,6 +130,7 @@ def test_basic(self):
         self.assertNotIn('module(load="immark"', config)
 
     def test_remote(self):
+        dummy_if_path = ['interfaces', 'dummy', dummy_interface]
         rhosts = {
             '169.254.0.1': {
                 'facility': {'auth' : {'level': 'info'}},
@@ -175,6 +179,15 @@ def test_remote(self):
                 protocol = remote_options['protocol']
                 self.cli_set(remote_base + ['protocol'], value=protocol)
 
+            if 'source_address' in remote_options:
+                source_address = remote_options['source_address']
+                self.cli_set(remote_base + ['source-address', source_address])
+
+                # check validate() - source address does not exist
+                with self.assertRaises(ConfigSessionError):
+                    self.cli_commit()
+                self.cli_set(dummy_if_path + ['address', f'{source_address}/32'])
+
         self.cli_commit()
 
         config = read_file(RSYSLOG_CONF)
@@ -217,6 +230,9 @@ def test_remote(self):
                 else:
                     self.assertIn( '        TCP_Framing="traditional"', config)
 
+        # cleanup dummy interface
+        self.cli_delete(dummy_if_path)
+
     def test_vrf_source_address(self):
         rhosts = {
             '169.254.0.10': { },
@@ -258,7 +274,6 @@ def test_vrf_source_address(self):
                                  value=vrf)
 
         self.cli_commit()
-        config = read_file(RSYSLOG_CONF)
 
         for remote, remote_options in rhosts.items():
             config = get_config(f'# Remote syslog to {remote}')