interfaces: add basic test adding only one interface IP address

... this is required for proper testing the "weird" bahavior of T2636 and that
the underlaying config parse fabric works as expected while migrating
interface code.

1 files changed, 14 insertions, 1 deletions

diff --git a/scripts/cli/base_interfaces_test.py b/scripts/cli/base_interfaces_test.py
index 3f8a74254..4fef01236 100644
--- a/scripts/cli/base_interfaces_test.py
+++ b/scripts/cli/base_interfaces_test.py
@@ -66,7 +66,20 @@ class BasicInterfaceTest:
                     tmp = f.read().rstrip()
                     self.assertTrue(tmp, test_string)
 
-        def test_add_address(self):
+        def test_add_address_single(self):
+            """
+            Check if a single address can be added to interface.
+            """
+            addr = '192.0.2.0/31'
+            for intf in self._interfaces:
+                self.session.set(self._base_path + [intf, 'address', addr])
+
+            self.session.commit()
+
+            for intf in self._interfaces:
+                self.assertTrue(is_intf_addr_assigned(intf, addr))
+
+        def test_add_address_multi(self):
             """
             Check if IPv4/IPv6 addresses can be added to interface.
             """