test: Fix test_query.test_should_self_reference

Author: abawchen

graphene_mongo/tests/models.py

@@ -61,4 +61,4 @@ class Player(Document):
     last_name = StringField(required=True)
     opponent = ReferenceField('Player')
     players = ListField(ReferenceField('Player'))
-    # articles = ListField(ReferenceField('Article'))
+    articles = ListField(ReferenceField('Article'))

graphene_mongo/tests/test_query.py

@@ -435,14 +435,22 @@ def resolve_all_players(self, *args, **kwargs):
             {
                 'firstName': 'Michael',
                 'opponent': None,
-                'players': []
+                'players': [
+                    {
+                        'firstName': 'Magic'
+                    }
+                ]
             },
             {
                 'firstName': 'Magic',
                 'opponent': {
                     'firstName': 'Michael'
                 },
-                'players': []
+                'players': [
+                    {
+                        'firstName': 'Michael'
+                    }
+                ]
             },
             {
                 'firstName': 'Larry',