fix: skip argument evaluation when value is a prepared value

Author: jrichardlai

lib/graphql/analysis/ast/field_usage.rb

@@ -48,7 +48,7 @@ def extract_deprecated_arguments(argument_values)
               argument_type = argument_type.of_type
             end
 
-            if argument_type.kind.input_object?
+            if argument_type.kind.input_object? && argument.value.respond_to?(:arguments)
               extract_deprecated_arguments(argument.value.arguments.argument_values) # rubocop:disable Development/ContextIsPassedCop -- runtime args instance
             elsif argument_type.kind.enum?
               extract_deprecated_enum_value(argument_type, argument.value)

spec/graphql/analysis/ast/field_usage_spec.rb

@@ -254,15 +254,15 @@
     end
   end
 
-  describe "mutation with deprecated arguments with prepared values" do
+  describe "mutation with deprecated arguments with prepared values does not break" do
     let(:query_string) {%|
       mutation {
         pushValue(preparedTestInput: { deprecatedDate: "2020-10-10" })
       }
     |}
 
-    it "keeps track of nested deprecated arguments" do
-      assert_equal ['PreparedDateInput.deprecatedDate'], result[:used_deprecated_arguments]
+    it "does not keeps track of nested deprecated arguments" do
+      assert_equal [], result[:used_deprecated_arguments]
     end
   end