You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: udp_lowpan_test.rs
    path of file: ./repos/tock/boards/imix/src/test
    
    the code of the file until where you have to start completion: // Licensed under the Apache License, Version 2.0 or the MIT License.
// SPDX-License-Identifier: Apache-2.0 OR MIT
// Copyright Tock Contributors 2022.

//! `udp_lowpan_test.rs`: Kernel test suite for the UDP/6LoWPAN stack
//!
//! This file tests port binding and sending and receiving messages from kernel space.
//! It has several different test modes. Each test uses the same radio initialization code,
//! but is started with a different function. A description
    
    fn capsule_send_invalid_net_cap_addr_port_test(&self) {
        let create_cap = create_capability!(NetworkCapabilityCreationCapability);
        let net_cap1 = unsafe {
            static_init!(
                NetworkCapability,
                NetworkCapability::new(
                    AddrRange::Any,
                    PortRange::Port(15000),
                    PortRange::Any,
                    &create_cap
                )
            )
        };

        // net_cap2 has an invalid address range and port
        let net_cap2 = unsafe {
            static_init!(
                NetworkCapability,
                NetworkCapability::new(
                    AddrRange::NoAddrs,
                    PortRange::Port(15002),
                    PortRange::Any,
                    &create_cap
                )
            )
        };
        let (ret1, ret2) = self.capsule_send_net_cap_test(net_cap1, net_cap2);
        assert_eq!(ret1, Ok(()));
        assert_eq!(ret2, Err(ErrorCode::RESERVE));
        debug!("send_invalid_net_cap_addr_port test executed, expect one send with Result: Ok(())");
    }