...disable it in tests, by adding a body class for tests %body{'data-environment' => Rails.env} overriding the transforms [data-environment="test"] * text-transform: none !important
faviconit.com
...in all needed sizes, formats and with the HTML needed to include them! In Rails applications with Haml: put all the favicon files into /public store the HTML to app/views/layouts/_favicon.html...
If your Rails application is using Webpack you need to serve assets on the same host as you application runs, otherwise you will see the following errors in your browser...