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: handshake_message_client_hello_test.rs
    path of file: ./repos/webrtc/dtls/src/handshake/handshake_message_client_hello
    
    the code of the file until where you have to start completion: use std::io::{BufReader, BufWriter};
use std::time::{Duration, SystemTime};

use super::*;
use crate::curve::named_curve::*;
use crate::extension::extension_supported_elliptic_curves::*;

#[test]
fn test_handshake_message_client_hello() -> Result<()> {
    let raw_client_hello = vec![
        0xfe, 0xfd, 0xb6, 0x2f, 0xce, 0x5c, 0x42, 0x54, 0xff, 0x86, 0xe1, 0x24, 0x41, 0x91, 0x42,
        0x62, 0x15, 0xad, 0x16, 0xc9, 0x15, 0x8d, 0x95, 0x71, 0x8a, 0xbb, 0x22, 0xd7, 0x47, 0xec,
        0xd8, 0x3d, 0xdc, 0x4b, 0x00, 0x14, 0xe6, 0x14, 0x3a, 0x1b, 0x04, 0xea, 0x9e, 0x7a, 0x14,
        0xd6, 0x6c, 0x57, 0xd0, 0x0e, 0x32, 0x85, 0x76, 0x18, 0xde, 0xd8, 0x00, 0x04, 0xc0, 0x2b,
        0xc0, 0x0a, 0x01, 0x00, 0x00, 0x08, 0x00, 0x0a, 0x00, 0x04, 0x00, 0x02, 0x00, 0x1d,
    ];

    let gmt_unix_time = if let Some(unix_time) =
        SystemTime::UNIX_EPOCH.checked_add(Duration::new(3056586332u64, 0))
    {
        unix_time

    
fn test_handshake_message_client_hello() -> Result<()> {
    let raw_client_hello = vec![
        0xfe, 0xfd, 0xb6, 0x2f, 0xce, 0x5c, 0x42, 0x54, 0xff, 0x86, 0xe1, 0x24, 0x41, 0x91, 0x42,
        0x62, 0x15, 0xad, 0x16, 0xc9, 0x15, 0x8d, 0x95, 0x71, 0x8a, 0xbb, 0x22, 0xd7, 0x47, 0xec,
        0xd8, 0x3d, 0xdc, 0x4b, 0x00, 0x14, 0xe6, 0x14, 0x3a, 0x1b, 0x04, 0xea, 0x9e, 0x7a, 0x14,
        0xd6, 0x6c, 0x57, 0xd0, 0x0e, 0x32, 0x85, 0x76, 0x18, 0xde, 0xd8, 0x00, 0x04, 0xc0, 0x2b,
        0xc0, 0x0a, 0x01, 0x00, 0x00, 0x08, 0x00, 0x0a, 0x00, 0x04, 0x00, 0x02, 0x00, 0x1d,
    ];

    let gmt_unix_time = if let Some(unix_time) =
        SystemTime::UNIX_EPOCH.checked_add(Duration::new(3056586332u64, 0))
    {
        unix_time
    } else {
        SystemTime::UNIX_EPOCH
    };
    let parsed_client_hello = HandshakeMessageClientHello {
        version: ProtocolVersion {
            major: 0xFE,
            minor: 0xFD,
        },
        random: HandshakeRandom {
            gmt_unix_time,
            random_bytes: [
                0x42, 0x54, 0xff, 0x86, 0xe1, 0x24, 0x41, 0x91, 0x42, 0x62, 0x15, 0xad, 0x16, 0xc9,
                0x15, 0x8d, 0x95, 0x71, 0x8a, 0xbb, 0x22, 0xd7, 0x47, 0xec, 0xd8, 0x3d, 0xdc, 0x4b,
            ],
        },
        cookie: vec![
            0xe6, 0x14, 0x3a, 0x1b, 0x04, 0xea, 0x9e, 0x7a, 0x14, 0xd6, 0x6c, 0x57, 0xd0, 0x0e,
            0x32, 0x85, 0x76, 0x18, 0xde, 0xd8,
        ],
        cipher_suites: vec![
            CipherSuiteId::Tls_Ecdhe_Ecdsa_With_Aes_128_Gcm_Sha256,
            CipherSuiteId::Tls_Ecdhe_Ecdsa_With_Aes_256_Cbc_Sha,
            //Box::<CipherSuiteTLSEcdheEcdsaWithAes128GcmSha256>::default(),
            //Box::<CipherSuiteTLSEcdheEcdsaWithAes256CbcSha>::default(),
        ],
        compression_methods: CompressionMethods {
            ids: vec![CompressionMethodId::Null],
        },
        extensions: vec![Extension::SupportedEllipticCurves(
            ExtensionSupportedEllipticCurves {
                elliptic_curves: vec![NamedCurve::X25519],
            },
        )],
    };

    let mut reader = BufReader::new(raw_client_hello.as_slice());
    let c = HandshakeMessageClientHello::unmarshal(&mut reader)?;
    assert_eq!(
        c, parsed_client_hello,
        "handshakeMessageClientHello unmarshal: got {c:?}, want {parsed_client_hello:?}"
    );

    let mut raw = vec![];
    {
        let mut writer = BufWriter::<&mut Vec<u8>>::new(raw.as_mut());
        c.marshal(&mut writer)?;
    }
    assert_eq!(
        raw, raw_client_hello,
        "handshakeMessageClientHello marshal: got {raw:?}, want {raw_client_hello:?}"
    );

    Ok(())
}