public void UserIdTest()
{
// Test that the service returns the same value as that of a direct call
// to the thread current principal
string userId1 = Thread.CurrentPrincipal.Identity.Name;
string userId2 = MembershipManagementService.UserId(true);
Assert.IsTrue(userId1 == userId2, $"Error: {userId2} was returned when {userId1} was expected");
}