diff --git a/test/integration/flash_test.rb b/test/integration/flash_test.rb
new file mode 100644
index 00000000..f9529a69
--- /dev/null
+++ b/test/integration/flash_test.rb
@@ -0,0 +1,9 @@
+require 'test_helper'
+
+class FlashTest < ActionController::IntegrationTest
+  test 'require_no_authentication should set the already_authenticated flash message' do
+    sign_in_as_user
+    visit new_user_session_path
+    assert_equal flash[:alert], I18n.t("devise.failure.already_authenticated")
+  end
+end