This PR allows site admins to run theme tests in production via a new
/theme-qunit route. When you visit
/theme-qunit, you’ll see a list of the themes/components installed on your site that have tests, and from there you can select a theme or component that you run its tests.
We also have a new rake task
themes:install_and_test that installs a list of themes/components on a temporary database and runs the tests of the themes/components that are installed. This rake task can be useful when upgrading/deploying a Discourse instance to make sure that the installed themes/components are compatible with the new Discourse version being deployed, and if the tests fail you can abort the build/deploy process so you don’t end up with a broken site.