test error repathing.

test/graphql/stitching/integration/nested_root_test.rb

@@ -64,4 +64,25 @@ def test_nested_root_scopes_with_complex_paths
     result = plan_and_execute(@supergraph, source)
     assert_equal expected, result["data"]
   end
+
+  def test_nested_root_scopes_repath_errors
+    source = %|
+      mutation {
+        doThing {
+          query {
+            errorA
+            errorB
+          }
+        }
+      }
+    |
+
+    expected = [
+      { "message" => "a", "path" => ["doThing", "query", "errorA"] },
+      { "message" => "b", "path" => ["doThing", "query", "errorB"] },
+    ]
+
+    result = plan_and_execute(@supergraph, source)
+    assert_equal expected, result["errors"]
+  end
 end

test/schemas/nested_root.rb

@@ -5,10 +5,15 @@ module NestedRoot
     class Alpha < GraphQL::Schema
       class Query < GraphQL::Schema::Object
         field :apple, String, null: false
+        field :error_a, String, null: false
 
         def apple
           "red"
         end
+
+        def error_a
+          raise GraphQL::ExecutionError.new("a")
+        end
       end
 
       class Thing < GraphQL::Schema::Object
@@ -26,6 +31,12 @@ def do_stuff
           {}
         end
 
+        field :do_thing, Thing, null: false
+
+        def do_thing
+          {}
+        end
+
         field :do_things, [Thing], null: false
 
         def do_things
@@ -40,10 +51,15 @@ def do_things
     class Bravo < GraphQL::Schema
       class Query < GraphQL::Schema::Object
         field :banana, String, null: false
+        field :error_b, String, null: false
 
         def banana
           "yellow"
         end
+
+        def error_b
+          raise GraphQL::ExecutionError.new("b")
+        end
       end
 
       query Query