Include kind in the types

Replicates graphql/graphql-js@2562ce01

Author: Cito

docs/usage/introspection.rst

@@ -28,7 +28,7 @@ The ``data`` attribute of the introspection query result now gives us a dictiona
 which constitutes a third way of describing a GraphQL schema::
 
     {'__schema': {
-        'queryType': {'name': 'Query'},
+        'queryType': {'name': 'Query', 'kind': 'OBJECT'},
         'mutationType': None, 'subscriptionType': None,
         'types': [
             {'kind': 'OBJECT', 'name': 'Query', 'description': None,

src/graphql/utilities/get_introspection_query.py

@@ -55,9 +55,9 @@ def input_deprecation(string: str) -> Optional[str]:
         query IntrospectionQuery {{
           __schema {{
             {maybe_schema_description}
-            queryType {{ name }}
-            mutationType {{ name }}
-            subscriptionType {{ name }}
+            queryType {{ name kind }}
+            mutationType {{ name kind }}
+            subscriptionType {{ name kind }}
             types {{
               ...FullType
             }}

tests/type/test_introspection.py

@@ -22,7 +22,7 @@ def executes_an_introspection_query():
         assert result.errors is None
         assert result.data == {
             "__schema": {
-                "queryType": {"name": "SomeObject"},
+                "queryType": {"name": "SomeObject", "kind": "OBJECT"},
                 "mutationType": None,
                 "subscriptionType": None,
                 "types": [

tests/utilities/test_build_client_schema.py

@@ -687,7 +687,7 @@ def throws_when_type_reference_is_missing_name():
             with raises(TypeError) as exc_info:
                 build_client_schema(introspection)
 
-            assert str(exc_info.value) == "Unknown type reference: {}."
+            assert str(exc_info.value) == "Unknown type reference: {'kind': 'OBJECT'}."
 
         def throws_when_missing_kind():
             introspection = introspection_from_schema(dummy_schema)