pppoe-server: T6141: T5364: PPPoE-server add pado-delay without sessions fails (#3296)

(cherry picked from commit 6d8336f5ad2d9c4e0f12b54681db2924d6998d2d)

1 files changed, 22 insertions, 0 deletions

diff --git a/smoketest/scripts/cli/test_service_pppoe-server.py b/smoketest/scripts/cli/test_service_pppoe-server.py
index d7c7aa164..5a48b1f58 100755
--- a/smoketest/scripts/cli/test_service_pppoe-server.py
+++ b/smoketest/scripts/cli/test_service_pppoe-server.py
@@ -148,6 +148,28 @@ class TestServicePPPoEServer(BasicAccelPPPTest.TestCase):
         tmp = ','.join(vlans)
         self.assertIn(f'vlan-mon={interface},{tmp}', config)
 
+    def test_pppoe_server_pado_delay(self):
+        delay_without_sessions = '10'
+        delays = {'20': '200', '30': '300'}
+
+        self.basic_config()
+
+        self.set(['pado-delay', delay_without_sessions])
+        self.cli_commit()
+
+        conf = ConfigParser(allow_no_value=True, delimiters='=')
+        conf.read(self._config_file)
+        self.assertEqual(conf['pppoe']['pado-delay'], delay_without_sessions)
+
+        for delay, sessions in delays.items():
+            self.set(['pado-delay', delay, 'sessions', sessions])
+        self.cli_commit()
+
+        conf = ConfigParser(allow_no_value=True, delimiters='=')
+        conf.read(self._config_file)
+
+        self.assertEqual(conf['pppoe']['pado-delay'], '10,20:200,-1:300')
+
 
 if __name__ == '__main__':
     unittest.main(verbosity=2)