Fix missing descriptions on GraphQL input object types (#409)

Fixes descriptions defined on `ObjectType`s and their fields in metadata
not showing up when that type is expressed as an input object type in
GraphQL.

V3_GIT_ORIGIN_REV_ID: de5cb2d545441fdebdf85fa84c90e9f0a4cbaac7

v3/crates/engine/src/schema/types/input_type.rs

@@ -116,7 +116,7 @@ fn input_object_type_input_fields(
 
             let input_field = gql_schema::InputField::new(
                 graphql_field_name.clone(),
-                None, // Description
+                field_definition.description.clone(),
                 types::Annotation::Input(types::InputAnnotation::InputObjectField {
                     field_name: field_name.clone(),
                     field_type: field_definition.field_type.clone(),
@@ -162,6 +162,11 @@ pub fn input_object_type_schema(
         input_object_type_input_fields(gds, builder, &object_type_representation.fields)?;
 
     Ok(gql_schema::TypeInfo::InputObject(
-        gql_schema::InputObject::new(graphql_type_name, None, input_fields, Vec::new()),
+        gql_schema::InputObject::new(
+            graphql_type_name,
+            object_type_representation.description.clone(),
+            input_fields,
+            Vec::new(),
+        ),
     ))
 }

v3/crates/engine/tests/execute/description/expected.json

@@ -123,16 +123,16 @@
           },
           {
             "name": "NameFilterOpaqueSurname",
-            "description": null,
+            "description": "Some description for custom input object type",
             "fields": null,
             "inputFields": [
               {
                 "name": "first_name",
-                "description": null
+                "description": "Some description of first name"
               },
               {
                 "name": "surname",
-                "description": null
+                "description": "Some description of last name"
               }
             ]
           },

v3/crates/engine/tests/execute/description/metadata.json

@@ -228,13 +228,16 @@
           "version": "v1",
           "definition": {
             "name": "NameFilterOpaqueSurname",
+            "description": "Some description for custom input object type",
             "fields": [
               {
                 "name": "first_name",
+                "description": "Some description of first name",
                 "type": "String"
               },
               {
                 "name": "surname",
+                "description": "Some description of last name",
                 "type": "Opaque"
               }
             ],