One project I'm working on needed a Behat test added to test whether a particular redirection works properly. Basically, I wanted to test for the following:

1. An anonymous user accesses a file at a URL like http://www.example.com/pictures/test.jpg
2. The anonymous user is redirected to the path http://www.example.com/sites/default/files/pictures/test.jpg

Since the site uses Apache, I added the actual redirect to the site's .htaccess file in the docroot, using the following Rewrite configuration:

&lt;IfModule mod_rewrite.c&gt;<br>&nbsp; RewriteEngine on<br><br>&nbsp; # Rewrite requests for /profile_images to public files directory location.<br>&nbsp; RewriteRule ^ pictures/(.*)$ /sites/default/files/pictures/$1 [L,NC,R=301]<br>&lt;/IfModule&gt;

Testing with curl --head, I could see that the proper headers were set—Location was set to the correct redirected URL, and the response gave a 301. So now I had to add the Behat test.