smoketest: tftp: T4012: add busy waiting loop when validating service availability

TFTP daemon is started as "fire and forget" and systemctl can return (thus
commit will return) but the daemon itself is not yet running.

This adds a loop checking if the service runs and will fail after 10 seconds.

1 files changed, 8 insertions, 1 deletions

diff --git a/smoketest/scripts/cli/test_service_tftp-server.py b/smoketest/scripts/cli/test_service_tftp-server.py
index 99d81e203..122d66d8c 100755
--- a/smoketest/scripts/cli/test_service_tftp-server.py
+++ b/smoketest/scripts/cli/test_service_tftp-server.py
@@ -18,6 +18,7 @@ import unittest
 
 from psutil import process_iter
 from base_vyostest_shim import VyOSUnitTestSHIM
+from time import sleep
 
 from vyos.configsession import ConfigSessionError
 from vyos.util import cmd
@@ -51,7 +52,13 @@ class TestServiceTFTPD(VyOSUnitTestSHIM.TestCase):
 
     def tearDown(self):
         # Check for running process
-        self.assertTrue(process_named_running(PROCESS_NAME))
+        count = 0
+        while count < 10:
+            count += 1
+            tmp = process_named_running(PROCESS_NAME)
+            if tmp: break
+            sleep(1)
+        self.assertTrue(tmp)
 
         self.cli_delete(base_path)
         self.cli_commit()