1 files changed, 22 insertions, 0 deletions
diff --git a/railties/test/generators/api_app_generator_test.rb b/railties/test/generators/api_app_generator_test.rb
index bb8b29501a..2edb39c8e8 100644
--- a/railties/test/generators/api_app_generator_test.rb
+++ b/railties/test/generators/api_app_generator_test.rb
@@ -61,6 +61,28 @@ class ApiAppGeneratorTest < Rails::Generators::TestCase
     end
   end
 
+  def test_app_update_does_not_generate_unnecessary_config_files
+    run_generator
+
+    generator = Rails::Generators::AppGenerator.new ["rails"],
+      { api: true, update: true }, destination_root: destination_root, shell: @shell
+    quietly { generator.send(:update_config_files) }
+
+    assert_no_file "config/initializers/cookies_serializer.rb"
+    assert_no_file "config/initializers/assets.rb"
+    assert_no_file "config/initializers/new_framework_defaults_5_1.rb"
+  end
+
+  def test_app_update_does_not_generate_unnecessary_bin_files
+    run_generator
+
+    generator = Rails::Generators::AppGenerator.new ["rails"],
+      { api: true, update: true }, destination_root: destination_root, shell: @shell
+    quietly { generator.send(:update_bin_files) }
+
+    assert_no_file "bin/yarn"
+  end
+
   private
 
     def default_files