I need to share testlinks of my survey including design elements but not give them the ability to actually fill out the survey
There is no easy way to do this – basically you are asking how to block the primary function of the tool.
It would be helpful to know why you want to stop your testers from entering responses. When your test respondents click on the test link, it will create a record tagged as TEST in the response database. This makes it easy to go back and delete the test response after the testing phase is over. Or it can be filtered out from reports and exports. Planning to delete the TEST responses is probably a much easier option then finding a way to intentionally cripple your survey.