1 files changed, 28 insertions, 0 deletions
diff --git a/railties/test/generators/app_generator_test.rb b/railties/test/generators/app_generator_test.rb
index 2d9867fa9d..25a8635e7d 100644
--- a/railties/test/generators/app_generator_test.rb
+++ b/railties/test/generators/app_generator_test.rb
@@ -257,6 +257,34 @@ class AppGeneratorTest < Rails::Generators::TestCase
     end
   end
 
+  def test_rails_update_does_not_create_to_time_preserves_timezone
+    app_root = File.join(destination_root, 'myapp')
+    run_generator [app_root]
+
+    FileUtils.rm("#{app_root}/config/initializers/to_time_preserves_timezone.rb")
+
+    stub_rails_application(app_root) do
+      generator = Rails::Generators::AppGenerator.new ["rails"], [], destination_root: app_root, shell: @shell
+      generator.send(:app_const)
+      quietly { generator.send(:update_config_files) }
+      assert_no_file "#{app_root}/config/initializers/to_time_preserves_timezone.rb"
+    end
+  end
+
+  def test_rails_update_does_not_remove_to_time_preserves_timezone_if_already_present
+    app_root = File.join(destination_root, 'myapp')
+    run_generator [app_root]
+
+    FileUtils.touch("#{app_root}/config/initializers/to_time_preserves_timezone.rb")
+
+    stub_rails_application(app_root) do
+      generator = Rails::Generators::AppGenerator.new ["rails"], [], destination_root: app_root, shell: @shell
+      generator.send(:app_const)
+      quietly { generator.send(:update_config_files) }
+      assert_file "#{app_root}/config/initializers/to_time_preserves_timezone.rb"
+    end
+  end
+
   def test_rails_update_does_not_create_ssl_options_by_default
     app_root = File.join(destination_root, 'myapp')
     run_generator [app_root]