bugfix: let DjangoConnectionField call its resolver function

that is, the one specified using DjangoConnectionField(..., resolver=some_func)

Author: PoByBolek

graphene_django/fields.py

@@ -247,7 +247,7 @@ def connection_resolver(
     def wrap_resolve(self, parent_resolver):
         return partial(
             self.connection_resolver,
-            parent_resolver,
+            self.resolver or parent_resolver,
             self.connection_type,
             self.get_manager(),
             self.get_queryset_resolver(),

graphene_django/tests/test_query.py

@@ -1,5 +1,6 @@
 import base64
 import datetime
+from unittest.mock import ANY, Mock
 
 import pytest
 from django.db import models
@@ -2000,6 +2001,52 @@ class Query(graphene.ObjectType):
     assert result.data == expected
 
 
+def test_connection_should_call_resolver_function():
+    resolver_mock = Mock(
+        name="resolver",
+        return_value=[
+            Reporter(first_name="Some", last_name="One"),
+            Reporter(first_name="John", last_name="Doe"),
+        ],
+    )
+
+    class ReporterType(DjangoObjectType):
+        class Meta:
+            model = Reporter
+            fields = "__all__"
+            interfaces = [Node]
+
+    class Query(graphene.ObjectType):
+        reporters = DjangoConnectionField(ReporterType, resolver=resolver_mock)
+
+    schema = graphene.Schema(query=Query)
+    result = schema.execute(
+        """
+        query {
+            reporters {
+                edges {
+                    node {
+                        firstName
+                        lastName
+                    }
+                }
+            }
+        }
+        """
+    )
+
+    resolver_mock.assert_called_once_with(None, ANY)
+    assert not result.errors
+    assert result.data == {
+        "reporters": {
+            "edges": [
+                {"node": {"firstName": "Some", "lastName": "One"}},
+                {"node": {"firstName": "John", "lastName": "Doe"}},
+            ],
+        },
+    }
+
+
 def test_should_query_nullable_foreign_key():
     class PetType(DjangoObjectType):
         class Meta: