Does the outsider test lead to an infinite regress?

Does the outsider test set up an infinite regress? If we can't believe anything unless we pass an outsider test for that belief, then doesn't the outsider test have to itself be outsider tested, and then that there has to be an outsider test for the outsider test for the outsider test, and then we would also need an outsider test for the outsider test for the outsider test for the outsider test, etc.