Function number_args_allowed
fn number_args_allowed(tester_name: &str, max: usize, args_len: usize) -> Result<()>Check that the number of args match what was expected
number_args_allowedfn number_args_allowed(tester_name: &str, max: usize, args_len: usize) -> Result<()>Check that the number of args match what was expected