Add kwarg for model subset testing

Since we only have a limited set of models that we are testing
subsets of keys for, we should explicitly only allow subsets when
testing those getters.

napalm/base/test/getters.py

@@ -311,7 +311,9 @@ def test_get_ntp_peers(self, test_case):
 
         for peer, peer_details in get_ntp_peers.items():
             assert isinstance(peer, str)
-            assert helpers.test_model(models.NTPPeerDict, peer_details)
+            assert helpers.test_model(
+                models.NTPPeerDict, peer_details, allow_subset=True
+            )
 
         return get_ntp_peers
 
@@ -323,7 +325,9 @@ def test_get_ntp_servers(self, test_case):
 
         for server, server_details in get_ntp_servers.items():
             assert isinstance(server, str)
-            assert helpers.test_model(models.NTPServerDict, server_details)
+            assert helpers.test_model(
+                models.NTPServerDict, server_details, allow_subset=True
+            )
 
         return get_ntp_servers
 

napalm/base/test/helpers.py

@@ -1,14 +1,16 @@
 """Several methods to help with the tests."""
 
 
-def test_model(model, data):
+def test_model(model, data, allow_subset=False):
     """Return if the dictionary `data` complies with the `model`."""
     # Access the underlying schema for a TypedDict directly
     annotations = model.__annotations__
-    if model.__total__:
-        same_keys = set(annotations.keys()) == set(data.keys())
-    else:
+    if allow_subset:
         same_keys = set(data.keys()) <= set(annotations.keys())
+        source = data
+    else:
+        same_keys = set(annotations.keys()) == set(data.keys())
+        source = annotations
 
     if not same_keys:
         print(
@@ -18,7 +20,7 @@ def test_model(model, data):
         )
 
     correct_class = True
-    for key in data.keys():
+    for key in source.keys():
         correct_class = isinstance(data[key], annotations[key]) and correct_class
         if not correct_class:
             print(