@Test
public void testX509AuthenticationLogin() {

    PreAuthenticatedAuthenticationToken token = new PreAuthenticatedAuthenticationToken("example.com",
            "doesn't matter what I put here");
    Authentication auth = AuthenticationService.getAuthenticationManager().authenticate(token);
    Collection<? extends GrantedAuthority> authorizations = auth.getAuthorities();
    authorizations.forEach(a -> {
        Assert.assertTrue(
                a.getAuthority().equals("D") || a.getAuthority().equals("E") || a.getAuthority().equals("F"));
    });
}