smoketest: T5783: check for any abnormal daemon termination

We need to ensure when stressing FRR with the smoketests that no unexpected
crash happens. We simply verify the PID of the individual FRR daemons.

(cherry picked from commit 080e117884196136cd63e5d312ff43fba15f7182)

1 files changed, 15 insertions, 3 deletions

diff --git a/smoketest/scripts/cli/test_protocols_bgp.py b/smoketest/scripts/cli/test_protocols_bgp.py
index 23e138ebe..71e2142f9 100755
--- a/smoketest/scripts/cli/test_protocols_bgp.py
+++ b/smoketest/scripts/cli/test_protocols_bgp.py
@@ -174,9 +174,16 @@ class TestProtocolsBGP(VyOSUnitTestSHIM.TestCase):
     def setUpClass(cls):
         super(TestProtocolsBGP, cls).setUpClass()
 
+        # Retrieve FRR daemon PID - it is not allowed to crash, thus PID must remain the same
+        cls.daemon_pid = process_named_running(PROCESS_NAME)
+
         # ensure we can also run this test on a live system - so lets clean
         # out the current configuration :)
         cls.cli_delete(cls, base_path)
+        cls.cli_delete(cls, ['policy', 'route-map'])
+        cls.cli_delete(cls, ['policy', 'prefix-list'])
+        cls.cli_delete(cls, ['policy', 'prefix-list6'])
+        cls.cli_delete(cls, ['vrf'])
 
         cls.cli_set(cls, ['policy', 'route-map', route_map_in, 'rule', '10', 'action', 'permit'])
         cls.cli_set(cls, ['policy', 'route-map', route_map_out, 'rule', '10', 'action', 'permit'])
@@ -192,18 +199,23 @@ class TestProtocolsBGP(VyOSUnitTestSHIM.TestCase):
 
     @classmethod
     def tearDownClass(cls):
-        cls.cli_delete(cls, ['policy'])
+        cls.cli_delete(cls, ['policy', 'route-map'])
+        cls.cli_delete(cls, ['policy', 'prefix-list'])
+        cls.cli_delete(cls, ['policy', 'prefix-list6'])
 
     def setUp(self):
         self.cli_set(base_path + ['system-as', ASN])
 
     def tearDown(self):
+        # cleanup any possible VRF mess
         self.cli_delete(['vrf'])
+        # always destrox the entire bgpd configuration to make the processes
+        # life as hard as possible
         self.cli_delete(base_path)
         self.cli_commit()
 
-        # Check for running process
-        self.assertTrue(process_named_running(PROCESS_NAME))
+        # check process health and continuity
+        self.assertEqual(self.daemon_pid, process_named_running(PROCESS_NAME))
 
     def create_bgp_instances_for_import_test(self):
         table = '1000'