introspection_from_schema: enable 'specified_by_url' by default

Replicates graphql/graphql-js@8c6e7c7

Author: Cito

src/graphql/utilities/introspection_from_schema.py

@@ -14,7 +14,7 @@
 def introspection_from_schema(
     schema: GraphQLSchema,
     descriptions: bool = True,
-    specified_by_url: bool = False,
+    specified_by_url: bool = True,
     directive_is_repeatable: bool = True,
     schema_description: bool = True,
 ) -> IntrospectionSchema:

tests/utilities/test_build_client_schema.py

@@ -32,14 +32,12 @@ def cycle_introspection(sdl_string):
     build in-memory GraphQLSchema from it, produce a client-side representation of the
     schema by using "build_client_schema" and then return that schema printed as SDL.
     """
-    options = dict(specified_by_url=True, directive_is_repeatable=True)
-
     server_schema = build_schema(sdl_string)
-    initial_introspection = introspection_from_schema(server_schema, **options)
+    initial_introspection = introspection_from_schema(server_schema)
     client_schema = build_client_schema(initial_introspection)
     # If the client then runs the introspection query against the client-side schema,
     # it should get a result identical to what was returned by the server
-    second_introspection = introspection_from_schema(client_schema, **options)
+    second_introspection = introspection_from_schema(client_schema)
 
     # If the client then runs the introspection query against the client-side
     # schema, it should get a result identical to what was returned by the server.

tests/utilities/test_introspection_from_schema.py

@@ -25,14 +25,16 @@ def describe_introspection_from_schema():
                 )
             },
             description="This is a simple type",
-        )
+        ),
+        description='This is a simple schema'
     )
 
     def converts_a_simple_schema():
         introspection = introspection_from_schema(schema)
 
         assert introspection_to_sdl(introspection) == dedent(
             '''
+            """This is a simple schema"""
             schema {
               query: Simple
             }