Fix Test Failure due to #1304

assert bar_graphql_type.interfaces == [foo_graphql_type] failed only on tox, because .interfaces was a tuple instead of a list. Error didn't occur using just pytest. Fixed by explicitly
converting both to list.

Author: erikwrede

graphene/types/tests/test_type_map.py

@@ -318,4 +318,4 @@ class Meta:
     assert isinstance(fields["foo"], GraphQLField)
     assert isinstance(fields["bar"], GraphQLField)
 
-    assert bar_graphql_type.interfaces == [foo_graphql_type]
+    assert list(bar_graphql_type.interfaces) == list([foo_graphql_type])