[feat]Add url, background color, text color to events in vertical schedule

spec/spec_helper.rb

@@ -123,6 +123,9 @@ RSpec.configure do |config|
 
   # enable debugging with --only-failures
   config.example_status_persistence_file_path = 'tmp/spec_failures.txt'
+
+  # include path helpers
+  config.include Rails.application.routes.url_helpers
 end
 
 OmniAuth.config.test_mode = true