how do I get a test directory off of google’s results?

i own domain.com

when you search for my site, google returns this:

domain.com/test/blahblahblah

See how it’s in a test folder? That was just something for testing purposes. How do I get rid of it so it stops appearing on google? It’s just a 404 error page now anyway.

If there’s no way, should I just make it a redirect to my homepage?

301 redirect the page to your homepage.. pretty sure google starts ignoring redirects? (I could be wrong, just something I saw somewhere)

several ways:
you can restrict access to that directory via htaccess
or simply create a robots.txt for that directory not allowing the search engines to crawl off and it will eventually come off. search google for robots.txt

imo, keep the ranking and just add a redirect

several ways:
you can restrict access to that directory via htaccess
or simply create a robots.txt for that directory not allowing the search engines to crawl off and it will eventually come off. search google for robots.txt

This