Don't print production eager loading warning if already eager loaded

lib/graphql.rb

@@ -16,6 +16,7 @@ def self.eager_load!
     Query.eager_load!
     Types.eager_load!
     Schema.eager_load!
+    @_eager_loaded = true
   end
 
   class Error < StandardError
@@ -86,7 +87,7 @@ class << self
     # If `production?` is detected but `eager_load!` wasn't called, emit a warning.
     # @return [void]
     def ensure_eager_load!
-      if production? && !eager_loading?
+      if production? && !eager_loaded?
         warn <<~WARNING
           GraphQL-Ruby thinks this is a production deployment but didn't eager-load its constants. Address this by:
 
@@ -111,6 +112,10 @@ def production?
         (detected_env = ENV["RACK_ENV"] || ENV["RAILS_ENV"] || ENV["HANAMI_ENV"] || ENV["APP_ENV"]) && detected_env.to_s.downcase == "production"
       end
     end
+
+    def eager_loaded?
+      @_eager_loaded ||= false
+    end
   end
 
   self.reject_numbers_followed_by_names = false

spec/graphql/autoload_spec.rb

@@ -49,6 +49,7 @@ def self.eager_load!
 
   describe "warning in production" do
     before do
+      GraphQL.remove_instance_variable(:@_eager_loaded) if GraphQL.instance_variable_defined?(:@_eager_loaded)
       @prev_env = ENV.to_hash
       ENV.update("HANAMI_ENV" => "production")
     end
@@ -84,5 +85,14 @@ def self.eager_load!
     ensure
       GraphQL.env = prev_env
     end
+
+    it "silences the warning when already eager-loaded" do
+      GraphQL.eager_load!
+      stdout, stderr = capture_io do
+        GraphQL.ensure_eager_load!
+      end
+      assert_equal "", stdout
+      assert_equal "", stderr
+    end
   end
 end