Added test for connection factory Description

Author: Denny Weinberg

graphene_sqlalchemy/fields.py

@@ -53,3 +53,8 @@ def createConnectionField(_type):
 def registerConnectionFieldFactory(factoryMethod):
     global __connectionFactory
     __connectionFactory = factoryMethod
+
+
+def unregisterConnectionFieldFactory():
+    global __connectionFactory
+    __connectionFactory = SQLAlchemyConnectionField

graphene_sqlalchemy/tests/test_connectionfactory.py

@@ -1,4 +1,4 @@
-from graphene_sqlalchemy.fields import SQLAlchemyConnectionField, registerConnectionFieldFactory
+from graphene_sqlalchemy.fields import SQLAlchemyConnectionField, registerConnectionFieldFactory, unregisterConnectionFieldFactory
 import graphene
 
 def test_register():
@@ -25,5 +25,4 @@ def createLXConnectionField(table):
         return LXConnectionField(table, filter=table.filter(), order_by=graphene.List(of_type=table.order_by))
 
     registerConnectionFieldFactory(createLXConnectionField)
-
-    
+    unregisterConnectionFieldFactory()