import netio.protocol fn test_protocols() { assert protocol.protocols().len > 0 } fn test_protocol_by_name() { assert protocol.protocol_by_name('tcp')!.aliases == ['TCP'] } fn test_protocol_by_number() { tcp_proto := protocol.protocol_by_name('tcp')! assert protocol.protocol_by_number(tcp_proto.number)!.name == 'tcp' }