Safari removes 'http' from address bar and redirects '.test' TLDs to google search

When developing client sites I often create a local domain "clientdomain.test", as this has been the most reliable TLD that doesn't otherwise attempt to redirect to a search engine (google in this case). This works fine when qualifying the full domain name with 'http://'. However, Safari constantly removes the 'http://' after loading the page (presumable to save space in the address bar). The problem however is that if I manually change the URI (i.e. "clientdomain.test/test-page") to quickly navigate to that page, Safari redirects the string to google search. Which means I have to hit the back button, and manually add 'http://' to the beginning of the url again, and refresh. So frustrating, and a huge time-waist. Is there any way to either stop safari from removing the 'http://' from URLs, or to tell safari to stop automatically redirecting strings that end in the '.test' TLD. It is a valid TLD!