Added test for node connection edge.

graphene/relay/tests/test_connection.py

@@ -92,6 +92,16 @@ def test_edge_with_bases():
     assert edge_fields['other'].type == String
 
 
+def test_edge_on_node():
+    Edge = MyObject.Connection.Edge
+    assert Edge._meta.name == 'MyObjectEdge'
+    edge_fields = Edge._meta.fields
+    assert list(edge_fields.keys()) == ['node', 'cursor']
+
+    assert isinstance(edge_fields['node'], Field)
+    assert edge_fields['node'].type == MyObject
+
+
 def test_pageinfo():
     assert PageInfo._meta.name == 'PageInfo'
     fields = PageInfo._meta.fields

graphene/relay/tests/test_mutation.py

@@ -1,15 +1,26 @@
+from collections import OrderedDict
 import pytest
 
 from ...types import (Argument, Field, InputField, InputObjectType, ObjectType,
                       Schema, AbstractType, NonNull)
 from ...types.scalars import String
+from ..connection import Connection
 from ..mutation import ClientIDMutation
+from ..node import Node
 
 
 class SharedFields(AbstractType):
     shared = String()
 
 
+class MyNode(ObjectType):
+
+    class Meta:
+        interfaces = (Node, )
+
+    name = String()
+
+
 class SaySomething(ClientIDMutation):
 
     class Input:
@@ -28,12 +39,16 @@ class OtherMutation(ClientIDMutation):
         additional_field = String()
 
     name = String()
+    my_node_edge = Field(MyNode.Connection.Edge)
 
     @classmethod
     def mutate_and_get_payload(cls, args, context, info):
         shared = args.get('shared', '')
         additionalField = args.get('additionalField', '')
-        return SaySomething(name=shared + additionalField)
+        edge_type = MyNode.Connection.Edge
+        return OtherMutation(name=shared + additionalField,
+                             my_node_edge=edge_type(
+                                 cursor='1', node=MyNode(name='name')))
 
 
 class RootQuery(ObjectType):
@@ -81,7 +96,7 @@ def test_mutation_input():
 
 def test_subclassed_mutation():
     fields = OtherMutation._meta.fields
-    assert list(fields.keys()) == ['name']
+    assert list(fields.keys()) == ['name', 'my_node_edge']
     assert isinstance(fields['name'], Field)
     field = OtherMutation.Field()
     assert field.type == OtherMutation
@@ -110,3 +125,12 @@ def test_subclassed_mutation_input():
 #     )
 #     assert not executed.errors
 #     assert executed.data == {'say': {'phrase': 'hello'}}
+
+def test_edge_query():
+    executed = schema.execute(
+        'mutation a { other(input: {clientMutationId:"1"}) { myNodeEdge { cursor node { name }} } }'
+    )
+    assert not executed.errors
+    assert executed.data == OrderedDict(
+        {'other': OrderedDict({'myNodeEdge': OrderedDict({'cursor': '1', 'node': OrderedDict({'name': 'name'})})})}
+    )