Moving WordPress over from testing folder

This might not be related to WordPress specifically, but I know it might change the WP settings so feel it needs to go here. I currently have my WordPress site residing in a folder ‘/wp’ for testing purposes. I would now like to make this the main site, so that when people visit http://www.mywebsite.com they get the same content as http://www.mywebsite.com/wp … BUT … I want to leave everything in the ‘/wp’ folder if possible. Can I do that with just redirecting things in the .htaccess file or will it mess up all my links, image links, etc? What’s the best way to do this for WordPress? TIA!