use super::*;

///////////////////////////////////////////////////////////////////
//chunk_type_test
///////////////////////////////////////////////////////////////////
use super::chunk_type::*;

#[test]
fn test_chunk_type_string() -> Result<()> {
    let tests = vec![
        (CT_PAYLOAD_DATA, "DATA"),
        (CT_INIT, "INIT"),
        (CT_INIT_ACK, "INIT-ACK"),
        (CT_SACK, "SACK"),
        (CT_HEARTBEAT, "HEARTBEAT"),
        (CT_HEARTBEAT_ACK, "HEARTBEAT-ACK"),
        (CT_ABORT, "ABORT"),
        (CT_SHUTDOWN, "SHUTDOWN"),
        (CT_SHUTDOWN_ACK, "SHUTDOWN-ACK"),
        (CT_ERROR, "ERROR"),
        (CT_COOKIE_ECHO, "COOKIE-ECHO"),
        (CT_COOKIE_ACK, "COOKIE-ACK"),
        (CT_ECNE, "ECNE"),
        (CT_CWR, "CWR"),
        (CT_SHUTDOWN_COMPLETE, "SHUTDOWN-COMPLETE"),
        (CT_RECONFIG, "RECONFIG"),
        (CT_FORWARD_TSN, "FORWARD-TSN"),
        (ChunkType(255), "Unknown ChunkType: 255"),
    ];

    for (ct, expected) in tests {
        assert_eq!(
            ct.to_string(),
            expected,
            "failed to stringify chunkType {ct}, expected {expected}"
        );
    }

    Ok(())
}

///////////////////////////////////////////////////////////////////
//chunk_abort_test
///////////////////////////////////////////////////////////////////
use super::chunk_abort::*;
use crate::error_cause::*;

#[test]
fn test_abort_chunk_one_error_cause() -> Result<()> {
    let abort1 = ChunkAbort {
        error_causes: vec![ErrorCause {
            code: PROTOCOL_VIOLATION,
            ..Default::default()
        }],
    };

    let b = abort1.marshal()?;
    let abort2 = ChunkAbort::unmarshal(&b)?;

    assert_eq!(abort2.error_causes.len(), 1, "should have only one cause");
    assert_eq!(
        abort2.error_causes[0].error_cause_code(),
        abort1.error_causes[0].error_cause_code(),
        "errorCause code should match"
    );

    Ok(())
}

#[test]
fn test_abort_chunk_many_error_causes() -> Result<()> {
    let abort1 = ChunkAbort {
        error_causes: vec![
            ErrorCause {
                code: INVALID_MANDATORY_PARAMETER,
                ..Default::default()
            },
            ErrorCause {
                code: UNRECOGNIZED_CHUNK_TYPE,
                ..Default::default()
            },
            ErrorCause {
                code: PROTOCOL_VIOLATION,
                ..Default::default()
            },
        ],
    };

    let b = abort1.marshal()?;
    let abort2 = ChunkAbort::unmarshal(&b)?;
    assert_eq!(abort2.error_causes.len(), 3, "should have only one cause");
    for (i, error_cause) in abort1.error_causes.iter().enumerate() {
        assert_eq!(
            abort2.error_causes[i].error_cause_code(),
            error_cause.error_cause_code(),
            "errorCause code should match"
        );
    }

    Ok(())
}

///////////////////////////////////////////////////////////////////
//chunk_error_test
///////////////////////////////////////////////////////////////////
use super::chunk_error::*;
use bytes::BufMut;
use lazy_static::lazy_static;

const CHUNK_FLAGS: u8 = 0x00;
static ORG_UNRECOGNIZED_CHUNK: Bytes =
    Bytes::from_static(&[0xc0, 0x0, 0x0, 0x8, 0x0, 0x0, 0x0, 0x3]);

lazy_static! {
    static ref RAW_IN: Bytes = {
        let mut raw = BytesMut::new();
        raw.put_u8(CT_ERROR.0);
        raw.put_u8(CHUNK_FLAGS);
        raw.extend(vec![0x00, 0x10, 0x00, 0x06, 0x00, 0x0c]);
        raw.extend(ORG_UNRECOGNIZED_CHUNK.clone());
        raw.freeze()
    };
}

#[test]
fn test_chunk_error_unrecognized_chunk_type_unmarshal() -> Result<()> {
    let c = ChunkError::unmarshal(&RAW_IN)?;
    assert_eq!(c.header().typ, CT_ERROR, "chunk type should be ERROR");
    assert_eq!(c.error_causes.len(), 1, "there should be on errorCause");

    let ec = &c.error_causes[0];
    assert_eq!(
        ec.error_cause_code(),
        UNRECOGNIZED_CHUNK_TYPE,
        "cause code should be unrecognizedChunkType"
    );
    assert_eq!(
        ec.raw, ORG_UNRECOGNIZED_CHUNK,
        "should have valid unrecognizedChunk"
    );

    Ok(())
}

#[test]
fn test_chunk_error_unrecognized_chunk_type_marshal() -> Result<()> {
    let ec_unrecognized_chunk_type = ErrorCause {
        code: UNRECOGNIZED_CHUNK_TYPE,
        raw: ORG_UNRECOGNIZED_CHUNK.clone(),
    };

    let ec = ChunkError {
        error_causes: vec![ec_unrecognized_chunk_type],
    };

    let raw = ec.marshal()?;
    assert_eq!(raw, *RAW_IN, "unexpected serialization result");

    Ok(())
}

#[test]
fn test_chunk_error_unrecognized_chunk_type_marshal_with_cause_value_being_nil() -> Result<()> {
    let expected =
        Bytes::from_static(&[CT_ERROR.0, CHUNK_FLAGS, 0x00, 0x08, 0x00, 0x06, 0x00, 0x04]);
    let ec_unrecognized_chunk_type = ErrorCause {
        code: UNRECOGNIZED_CHUNK_TYPE,
        ..Default::default()
    };

    let ec = ChunkError {
        error_causes: vec![ec_unrecognized_chunk_type],
    };

    let raw = ec.marshal()?;
    assert_eq!(raw, expected, "unexpected serialization result");

    Ok(())
}

///////////////////////////////////////////////////////////////////
//chunk_forward_tsn_test
///////////////////////////////////////////////////////////////////
use super::chunk_forward_tsn::*;

static CHUNK_FORWARD_TSN_BYTES: Bytes =
    Bytes::from_static(&[0xc0, 0x0, 0x0, 0x8, 0x0, 0x0, 0x0, 0x3]);

#[test]
fn test_chunk_forward_tsn_success() -> Result<()> {
    let tests = vec![
        CHUNK_FORWARD_TSN_BYTES.clone(),
        Bytes::from_static(&[0xc0, 0x0, 0x0, 0xc, 0x0, 0x0, 0x0, 0x3, 0x0, 0x4, 0x0, 0x5]),
        Bytes::from_static(&[
            0xc0, 0x0, 0x0, 0x10, 0x0, 0x0, 0x0, 0x3, 0x0, 0x4, 0x0, 0x5, 0x0, 0x6, 0x0, 0x7,
        ]),
    ];

    for binary in tests {
        let actual = ChunkForwardTsn::unmarshal(&binary)?;
        let b = actual.marshal()?;
        assert_eq!(b, binary, "test not equal");
    }

    Ok(())
}

#[test]
fn test_chunk_forward_tsn_unmarshal_failure() -> Result<()> {
    let tests = vec![
        ("chunk header to short", Bytes::from_static(&[0xc0])),
        (
            "missing New Cumulative TSN",
            Bytes::from_static(&[0xc0, 0x0, 0x0, 0x4]),
        ),
        (
            "missing stream sequence",
            Bytes::from_static(&[
                0xc0, 0x0, 0x0, 0xe, 0x0, 0x0, 0x0, 0x3, 0x0, 0x4, 0x0, 0x5, 0x0, 0x6,
            ]),
        ),
    ];

    for (name, binary) in tests {
        let result = ChunkForwardTsn::unmarshal(&binary);
        assert!(result.is_err(), "expected unmarshal: {name} to fail.");
    }

    Ok(())
}

///////////////////////////////////////////////////////////////////
//chunk_reconfig_test
///////////////////////////////////////////////////////////////////
use super::chunk_reconfig::*;

static TEST_CHUNK_RECONFIG_PARAM_A: Bytes = Bytes::from_static(&[
    0x0, 0xd, 0x0, 0x16, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x2, 0x0, 0x0, 0x0, 0x3, 0x0, 0x4, 0x0,
    0x5, 0x0, 0x6,
]);

static TEST_CHUNK_RECONFIG_PARAM_B: Bytes = Bytes::from_static(&[
    0x0, 0xd, 0x0, 0x10, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x2, 0x0, 0x0, 0x0, 0x3,
]);

static TEST_CHUNK_RECONFIG_RESPONCE: Bytes =
    Bytes::from_static(&[0x0, 0x10, 0x0, 0xc, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x1]);

lazy_static! {
    static ref TEST_CHUNK_RECONFIG_BYTES: Vec<Bytes> = {
        let mut tests = vec![];
        {
            let mut test = BytesMut::new();
            test.extend(vec![0x82, 0x0, 0x0, 0x1a]);
            test.extend(TEST_CHUNK_RECONFIG_PARAM_A.clone());
            tests.push(test.freeze());
        }
        {
            let mut test = BytesMut::new();
            test.extend(vec![0x82, 0x0, 0x0, 0x14]);
            test.extend(TEST_CHUNK_RECONFIG_PARAM_B.clone());
            tests.push(test.freeze());
        }
        {
            let mut test = BytesMut::new();
            test.extend(vec![0x82, 0x0, 0x0, 0x10]);
            test.extend(TEST_CHUNK_RECONFIG_RESPONCE.clone());
            tests.push(test.freeze());
        }
        {
            let mut test = BytesMut::new();
            test.extend(vec![0x82, 0x0, 0x0, 0x2c]);
            test.extend(TEST_CHUNK_RECONFIG_PARAM_A.clone());
            test.extend(vec![0u8; 2]);
            test.extend(TEST_CHUNK_RECONFIG_PARAM_B.clone());
            tests.push(test.freeze());
        }
        {
            let mut test = BytesMut::new();
            test.extend(vec![0x82, 0x0, 0x0, 0x2a]);
            test.extend(TEST_CHUNK_RECONFIG_PARAM_B.clone());
            test.extend(TEST_CHUNK_RECONFIG_PARAM_A.clone());
            tests.push(test.freeze());
        }

        tests
    };
}

#[test]
fn test_chunk_reconfig_success() -> Result<()> {
    for (i, binary) in TEST_CHUNK_RECONFIG_BYTES.iter().enumerate() {
        let actual = ChunkReconfig::unmarshal(binary)?;
        let b = actual.marshal()?;
        assert_eq!(*binary, b, "test {} not equal: {:?} vs {:?}", i, *binary, b);
    }

    Ok(())
}

#[test]
fn test_chunk_reconfig_unmarshal_failure() -> Result<()> {
    let mut test = BytesMut::new();
    test.extend(vec![0x82, 0x0, 0x0, 0x18]);
    test.extend(TEST_CHUNK_RECONFIG_PARAM_B.clone());
    test.extend(vec![0x0, 0xd, 0x0, 0x0]);
    let tests = vec![
        ("chunk header to short", Bytes::from_static(&[0x82])),
        (
            "missing parse param type (A)",
            Bytes::from_static(&[0x82, 0x0, 0x0, 0x4]),
        ),
        (
            "wrong param (A)",
            Bytes::from_static(&[0x82, 0x0, 0x0, 0x8, 0x0, 0xd, 0x0, 0x0]),
        ),
        ("wrong param (B)", test.freeze()),
    ];

    for (name, binary) in tests {
        let result = ChunkReconfig::unmarshal(&binary);
        assert!(result.is_err(), "expected unmarshal: {name} to fail.");
    }

    Ok(())
}

///////////////////////////////////////////////////////////////////
//chunk_shutdown_test
///////////////////////////////////////////////////////////////////
use super::chunk_shutdown::*;

#[test]
fn test_chunk_shutdown_success() -> Result<()> {
    let tests = vec![Bytes::from_static(&[
        0x07, 0x00, 0x00, 0x08, 0x12, 0x34, 0x56, 0x78,
    ])];

    for binary in tests {
        let actual = ChunkShutdown::unmarshal(&binary)?;
        let b = actual.marshal()?;
        assert_eq!(b, binary, "test not equal");
    }

    Ok(())
}

#[test]
fn test_chunk_shutdown_failure() -> Result<()> {
    let tests = vec![
        (
            "length too short",
            Bytes::from_static(&[0x07, 0x00, 0x00, 0x07, 0x12, 0x34, 0x56, 0x78]),
        ),
        (
            "length too long",
            Bytes::from_static(&[0x07, 0x00, 0x00, 0x09, 0x12, 0x34, 0x56, 0x78]),
        ),
        (
            "payload too short",
            Bytes::from_static(&[0x07, 0x00, 0x00, 0x08, 0x12, 0x34, 0x56]),
        ),
        (
            "payload too long",
            Bytes::from_static(&[0x07, 0x00, 0x00, 0x08, 0x12, 0x34, 0x56, 0x78, 0x9f]),
        ),
        (
            "invalid type",
            Bytes::from_static(&[0x08, 0x00, 0x00, 0x08, 0x12, 0x34, 0x56, 0x78]),
        ),
    ];

    for (name, binary) in tests {
        let result = ChunkShutdown::unmarshal(&binary);
        assert!(result.is_err(), "expected unmarshal: {name} to fail.");
    }

    Ok(())
}

///////////////////////////////////////////////////////////////////
//chunk_shutdown_ack_test
///////////////////////////////////////////////////////////////////
use super::chunk_shutdown_ack::*;

#[test]
fn test_chunk_shutdown_ack_success() -> Result<()> {
    let tests = vec![Bytes::from_static(&[0x08, 0x00, 0x00, 0x04])];

    for binary in tests {
        let actual = ChunkShutdownAck::unmarshal(&binary)?;
        let b = actual.marshal()?;
        assert_eq!(binary, b, "test not equal");
    }

    Ok(())
}

#[test]
fn test_chunk_shutdown_ack_failure() -> Result<()> {
    let tests = vec![
        ("length too short", Bytes::from_static(&[0x08, 0x00, 0x00])),
        (
            "length too long",
            Bytes::from_static(&[0x08, 0x00, 0x00, 0x04, 0x12]),
        ),
        (
            "invalid type",
            Bytes::from_static(&[0x0f, 0x00, 0x00, 0x04]),
        ),
    ];

    for (name, binary) in tests {
        let result = ChunkShutdownAck::unmarshal(&binary);
        assert!(result.is_err(), "expected unmarshal: {name} to fail.");
    }

    Ok(())
}

///////////////////////////////////////////////////////////////////
//chunk_shutdown_complete_test
///////////////////////////////////////////////////////////////////
use super::chunk_shutdown_complete::*;

#[test]
fn test_chunk_shutdown_complete_success() -> Result<()> {
    let tests = vec![Bytes::from_static(&[0x0e, 0x00, 0x00, 0x04])];

    for binary in tests {
        let actual = ChunkShutdownComplete::unmarshal(&binary)?;
        let b = actual.marshal()?;
        assert_eq!(b, binary, "test not equal");
    }

    Ok(())
}

#[test]
fn test_chunk_shutdown_complete_failure() -> Result<()> {
    let tests = vec![
        ("length too short", Bytes::from_static(&[0x0e, 0x00, 0x00])),
        (
            "length too long",
            Bytes::from_static(&[0x0e, 0x00, 0x00, 0x04, 0x12]),
        ),
        (
            "invalid type",
            Bytes::from_static(&[0x0f, 0x00, 0x00, 0x04]),
        ),
    ];

    for (name, binary) in tests {
        let result = ChunkShutdownComplete::unmarshal(&binary);
        assert!(result.is_err(), "expected unmarshal: {name} to fail.");
    }

    Ok(())
}

///////////////////////////////////////////////////////////////////
//chunk_test
///////////////////////////////////////////////////////////////////
use crate::chunk::chunk_init::*;
use crate::chunk::chunk_payload_data::*;
use crate::chunk::chunk_selective_ack::ChunkSelectiveAck;
use crate::packet::*;
use crate::param::param_outgoing_reset_request::ParamOutgoingResetRequest;
use crate::param::param_state_cookie::*;

#[test]
fn test_init_chunk() -> Result<()> {
    let raw_pkt = Bytes::from_static(&[
        0x13, 0x88, 0x13, 0x88, 0x00, 0x00, 0x00, 0x00, 0x81, 0x46, 0x9d, 0xfc, 0x01, 0x00, 0x00,
        0x56, 0x55, 0xb9, 0x64, 0xa5, 0x00, 0x02, 0x00, 0x00, 0x04, 0x00, 0x08, 0x00, 0xe8, 0x6d,
        0x10, 0x30, 0xc0, 0x00, 0x00, 0x04, 0x80, 0x08, 0x00, 0x09, 0xc0, 0x0f, 0xc1, 0x80, 0x82,
        0x00, 0x00, 0x00, 0x80, 0x02, 0x00, 0x24, 0x9f, 0xeb, 0xbb, 0x5c, 0x50, 0xc9, 0xbf, 0x75,
        0x9c, 0xb1, 0x2c, 0x57, 0x4f, 0xa4, 0x5a, 0x51, 0xba, 0x60, 0x17, 0x78, 0x27, 0x94, 0x5c,
        0x31, 0xe6, 0x5d, 0x5b, 0x09, 0x47, 0xe2, 0x22, 0x06, 0x80, 0x04, 0x00, 0x06, 0x00, 0x01,
        0x00, 0x00, 0x80, 0x03, 0x00, 0x06, 0x80, 0xc1, 0x00, 0x00,
    ]);
    let pkt = Packet::unmarshal(&raw_pkt)?;

    if let Some(c) = pkt.chunks[0].as_any().downcast_ref::<ChunkInit>() {
        assert_eq!(
            c.initiate_tag, 1438213285,
            "Unmarshal passed for SCTP packet, but got incorrect initiate tag exp: {} act: {}",
            1438213285, c.initiate_tag
        );
        assert_eq!(c.advertised_receiver_window_credit, 131072, "Unmarshal passed for SCTP packet, but got incorrect advertisedReceiverWindowCredit exp: {} act: {}", 131072, c.advertised_receiver_window_credit);
        assert_eq!(c.num_outbound_streams, 1024, "Unmarshal passed for SCTP packet, but got incorrect numOutboundStreams tag exp:{} act: {}", 1024, c.num_outbound_streams);
        assert_eq!(
            c.num_inbound_streams, 2048,
            "Unmarshal passed for SCTP packet, but got incorrect numInboundStreams exp: {} act: {}",
            2048, c.num_inbound_streams
        );
        assert_eq!(
            c.initial_tsn, 3899461680u32,
            "Unmarshal passed for SCTP packet, but got incorrect initialTSN exp: {} act: {}",
            3899461680u32, c.initial_tsn
        );
    } else {
        panic!("Failed to cast Chunk -> Init");
    }

    Ok(())
}

#[test]
fn test_init_ack() -> Result<()> {
    let raw_pkt = Bytes::from_static(&[
        0x13, 0x88, 0x13, 0x88, 0xce, 0x15, 0x79, 0xa2, 0x96, 0x19, 0xe8, 0xb2, 0x02, 0x00, 0x00,
        0x1c, 0xeb, 0x81, 0x4e, 0x01, 0x00, 0x00, 0x00, 0x00, 0x04, 0x00, 0x08, 0x00, 0x50, 0xdf,
        0x90, 0xd9, 0x00, 0x07, 0x00, 0x08, 0x94, 0x06, 0x2f, 0x93,
    ]);
    let pkt = Packet::unmarshal(&raw_pkt)?;
    assert!(
        pkt.chunks[0].as_any().downcast_ref::<ChunkInit>().is_some(),
        "Failed to cast Chunk -> Init"
    );

    Ok(())
}

#[test]
fn test_chrome_chunk1_init() -> Result<()> {
    let raw_pkt = Bytes::from_static(&[
        0x13, 0x88, 0x13, 0x88, 0x00, 0x00, 0x00, 0x00, 0xbc, 0xb3, 0x45, 0xa2, 0x01, 0x00, 0x00,
        0x56, 0xce, 0x15, 0x79, 0xa2, 0x00, 0x02, 0x00, 0x00, 0x04, 0x00, 0x08, 0x00, 0x94, 0x57,
        0x95, 0xc0, 0xc0, 0x00, 0x00, 0x04, 0x80, 0x08, 0x00, 0x09, 0xc0, 0x0f, 0xc1, 0x80, 0x82,
        0x00, 0x00, 0x00, 0x80, 0x02, 0x00, 0x24, 0xff, 0x5c, 0x49, 0x19, 0x4a, 0x94, 0xe8, 0x2a,
        0xec, 0x58, 0x55, 0x62, 0x29, 0x1f, 0x8e, 0x23, 0xcd, 0x7c, 0xe8, 0x46, 0xba, 0x58, 0x1b,
        0x3d, 0xab, 0xd7, 0x7e, 0x50, 0xf2, 0x41, 0xb1, 0x2e, 0x80, 0x04, 0x00, 0x06, 0x00, 0x01,
        0x00, 0x00, 0x80, 0x03, 0x00, 0x06, 0x80, 0xc1, 0x00, 0x00,
    ]);
    let pkt = Packet::unmarshal(&raw_pkt)?;
    let raw_pkt2 = pkt.marshal()?;
    assert_eq!(raw_pkt2, raw_pkt);

    Ok(())
}

#[test]
fn test_chrome_chunk2_init_ack() -> Result<()> {
    let raw_pkt = Bytes::from_static(&[
        0x13, 0x88, 0x13, 0x88, 0xce, 0x15, 0x79, 0xa2, 0xb5, 0xdb, 0x2d, 0x93, 0x02, 0x00, 0x01,
        0x90, 0x9b, 0xd5, 0xb3, 0x6f, 0x00, 0x02, 0x00, 0x00, 0x04, 0x00, 0x08, 0x00, 0xef, 0xb4,
        0x72, 0x87, 0xc0, 0x00, 0x00, 0x04, 0x80, 0x08, 0x00, 0x09, 0xc0, 0x0f, 0xc1, 0x80, 0x82,
        0x00, 0x00, 0x00, 0x80, 0x02, 0x00, 0x24, 0x2e, 0xf9, 0x9c, 0x10, 0x63, 0x72, 0xed, 0x0d,
        0x33, 0xc2, 0xdc, 0x7f, 0x9f, 0xd7, 0xef, 0x1b, 0xc9, 0xc4, 0xa7, 0x41, 0x9a, 0x07, 0x68,
        0x6b, 0x66, 0xfb, 0x6a, 0x4e, 0x32, 0x5d, 0xe4, 0x25, 0x80, 0x04, 0x00, 0x06, 0x00, 0x01,
        0x00, 0x00, 0x80, 0x03, 0x00, 0x06, 0x80, 0xc1, 0x00, 0x00, 0x00, 0x07, 0x01, 0x38, 0x4b,
        0x41, 0x4d, 0x45, 0x2d, 0x42, 0x53, 0x44, 0x20, 0x31, 0x2e, 0x31, 0x00, 0x00, 0x00, 0x00,
        0x9c, 0x1e, 0x49, 0x5b, 0x00, 0x00, 0x00, 0x00, 0xd2, 0x42, 0x06, 0x00, 0x00, 0x00, 0x00,
        0x00, 0x60, 0xea, 0x00, 0x00, 0xc4, 0x13, 0x3d, 0xe9, 0x86, 0xb1, 0x85, 0x75, 0xa2, 0x79,
        0x15, 0xce, 0x9b, 0xd5, 0xb3, 0x6f, 0x20, 0xe0, 0x9f, 0x89, 0xe0, 0x27, 0x00, 0x00, 0x00,
        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x20, 0xe0, 0x9f, 0x89,
        0xe0, 0x27, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00,
        0x00, 0x00, 0x00, 0x00, 0x00, 0x13, 0x88, 0x13, 0x88, 0x00, 0x00, 0x01, 0x00, 0x01, 0x01,
        0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x56, 0xce, 0x15, 0x79, 0xa2, 0x00,
        0x02, 0x00, 0x00, 0x04, 0x00, 0x08, 0x00, 0x94, 0x57, 0x95, 0xc0, 0xc0, 0x00, 0x00, 0x04,
        0x80, 0x08, 0x00, 0x09, 0xc0, 0x0f, 0xc1, 0x80, 0x82, 0x00, 0x00, 0x00, 0x80, 0x02, 0x00,
        0x24, 0xff, 0x5c, 0x49, 0x19, 0x4a, 0x94, 0xe8, 0x2a, 0xec, 0x58, 0x55, 0x62, 0x29, 0x1f,
        0x8e, 0x23, 0xcd, 0x7c, 0xe8, 0x46, 0xba, 0x58, 0x1b, 0x3d, 0xab, 0xd7, 0x7e, 0x50, 0xf2,
        0x41, 0xb1, 0x2e, 0x80, 0x04, 0x00, 0x06, 0x00, 0x01, 0x00, 0x00, 0x80, 0x03, 0x00, 0x06,
        0x80, 0xc1, 0x00, 0x00, 0x02, 0x00, 0x01, 0x90, 0x9b, 0xd5, 0xb3, 0x6f, 0x00, 0x02, 0x00,
        0x00, 0x04, 0x00, 0x08, 0x00, 0xef, 0xb4, 0x72, 0x87, 0xc0, 0x00, 0x00, 0x04, 0x80, 0x08,
        0x00, 0x09, 0xc0, 0x0f, 0xc1, 0x80, 0x82, 0x00, 0x00, 0x00, 0x80, 0x02, 0x00, 0x24, 0x2e,
        0xf9, 0x9c, 0x10, 0x63, 0x72, 0xed, 0x0d, 0x33, 0xc2, 0xdc, 0x7f, 0x9f, 0xd7, 0xef, 0x1b,
        0xc9, 0xc4, 0xa7, 0x41, 0x9a, 0x07, 0x68, 0x6b, 0x66, 0xfb, 0x6a, 0x4e, 0x32, 0x5d, 0xe4,
        0x25, 0x80, 0x04, 0x00, 0x06, 0x00, 0x01, 0x00, 0x00, 0x80, 0x03, 0x00, 0x06, 0x80, 0xc1,
        0x00, 0x00, 0xca, 0x0c, 0x21, 0x11, 0xce, 0xf4, 0xfc, 0xb3, 0x66, 0x99, 0x4f, 0xdb, 0x4f,
        0x95, 0x6b, 0x6f, 0x3b, 0xb1, 0xdb, 0x5a,
    ]);
    let pkt = Packet::unmarshal(&raw_pkt)?;
    let raw_pkt2 = pkt.marshal()?;
    assert_eq!(raw_pkt2, raw_pkt);

    Ok(())
}

#[test]
fn test_init_marshal_unmarshal() -> Result<()> {
    let mut p = Packet {
        destination_port: 1,
        source_port: 1,
        verification_tag: 123,
        chunks: vec![],
    };

    let mut init_ack = ChunkInit {
        is_ack: true,
        initiate_tag: 123,
        advertised_receiver_window_credit: 1024,
        num_outbound_streams: 1,
        num_inbound_streams: 1,
        initial_tsn: 123,
        params: vec![],
    };

    let cookie = Box::new(ParamStateCookie::new());
    init_ack.params.push(cookie);

    p.chunks.push(Box::new(init_ack));

    let raw_pkt = p.marshal()?;
    let pkt = Packet::unmarshal(&raw_pkt)?;

    if let Some(c) = pkt.chunks[0].as_any().downcast_ref::<ChunkInit>() {
        assert_eq!(
            c.initiate_tag, 123,
            "Unmarshal passed for SCTP packet, but got incorrect initiate tag exp: {} act: {}",
            123, c.initiate_tag
        );
        assert_eq!(c.advertised_receiver_window_credit, 1024, "Unmarshal passed for SCTP packet, but got incorrect advertisedReceiverWindowCredit exp: {} act: {}", 1024, c.advertised_receiver_window_credit);
        assert_eq!(c.num_outbound_streams, 1, "Unmarshal passed for SCTP packet, but got incorrect numOutboundStreams tag exp:{} act: {}", 1, c.num_outbound_streams);
        assert_eq!(
            c.num_inbound_streams, 1,
            "Unmarshal passed for SCTP packet, but got incorrect numInboundStreams exp: {} act: {}",
            1, c.num_inbound_streams
        );
        assert_eq!(
            c.initial_tsn, 123,
            "Unmarshal passed for SCTP packet, but got incorrect initialTSN exp: {} act: {}",
            123, c.initial_tsn
        );
    } else {
        panic!("Failed to cast Chunk -> InitAck");
    }

    Ok(())
}

#[test]
fn test_payload_data_marshal_unmarshal() -> Result<()> {
    let raw_pkt = Bytes::from_static(&[
        0x13, 0x88, 0x13, 0x88, 0xfc, 0xd6, 0x3f, 0xc6, 0xbe, 0xfa, 0xdc, 0x52, 0x0a, 0x00, 0x00,
        0x24, 0x9b, 0x28, 0x7e, 0x48, 0xa3, 0x7b, 0xc1, 0x83, 0xc4, 0x4b, 0x41, 0x04, 0xa4, 0xf7,
        0xed, 0x4c, 0x93, 0x62, 0xc3, 0x49, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
        0x00, 0x00, 0x00, 0x00, 0x03, 0x00, 0x1f, 0xa8, 0x79, 0xa1, 0xc7, 0x00, 0x01, 0x00, 0x00,
        0x00, 0x00, 0x00, 0x32, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x00,
        0x00, 0x66, 0x6f, 0x6f, 0x00,
    ]);
    let pkt = Packet::unmarshal(&raw_pkt)?;
    assert!(
        pkt.chunks[1]
            .as_any()
            .downcast_ref::<ChunkPayloadData>()
            .is_some(),
        "Failed to cast Chunk -> PayloadData"
    );
    Ok(())
}

#[test]
fn test_select_ack_chunk() -> Result<()> {
    let raw_pkt = Bytes::from_static(&[
        0x13, 0x88, 0x13, 0x88, 0xc2, 0x98, 0x98, 0x0f, 0x42, 0x31, 0xea, 0x78, 0x03, 0x00, 0x00,
        0x14, 0x87, 0x73, 0xbd, 0xa4, 0x00, 0x01, 0xfe, 0x74, 0x00, 0x01, 0x00, 0x00, 0x00, 0x02,
        0x00, 0x02,
    ]);
    let pkt = Packet::unmarshal(&raw_pkt)?;
    assert!(
        pkt.chunks[0]
            .as_any()
            .downcast_ref::<ChunkSelectiveAck>()
            .is_some(),
        "Failed to cast Chunk -> SelectiveAck"
    );
    Ok(())
}

#[test]
fn test_reconfig_chunk() -> Result<()> {
    let raw_pkt = Bytes::from_static(&[
        0x13, 0x88, 0x13, 0x88, 0xb6, 0xa5, 0x12, 0xe5, 0x75, 0x3b, 0x12, 0xd3, 0x82, 0x0, 0x0,
        0x16, 0x0, 0xd, 0x0, 0x12, 0x4e, 0x1c, 0xb9, 0xe6, 0x3a, 0x74, 0x8d, 0xff, 0x4e, 0x1c,
        0xb9, 0xe6, 0x0, 0x1, 0x0, 0x0,
    ]);
    let pkt = Packet::unmarshal(&raw_pkt)?;
    if let Some(c) = pkt.chunks[0].as_any().downcast_ref::<ChunkReconfig>() {
        assert!(c.param_a.is_some(), "param_a must not be none");
        assert_eq!(
            c.param_a
                .as_ref()
                .unwrap()
                .as_any()
                .downcast_ref::<ParamOutgoingResetRequest>()
                .unwrap()
                .stream_identifiers[0],
            1,
            "unexpected stream identifier"
        );
    } else {
        panic!("Failed to cast Chunk -> Reconfig");
    }

    Ok(())
}

#[test]
fn test_forward_tsn_chunk() -> Result<()> {
    let mut raw_pkt = BytesMut::new();
    raw_pkt.extend(vec![
        0x13, 0x88, 0x13, 0x88, 0xb6, 0xa5, 0x12, 0xe5, 0x1f, 0x9d, 0xa0, 0xfb,
    ]);
    raw_pkt.extend(CHUNK_FORWARD_TSN_BYTES.clone());
    let raw_pkt = raw_pkt.freeze();
    let pkt = Packet::unmarshal(&raw_pkt)?;

    if let Some(c) = pkt.chunks[0].as_any().downcast_ref::<ChunkForwardTsn>() {
        assert_eq!(
            c.new_cumulative_tsn, 3,
            "unexpected New Cumulative TSN: {}",
            c.new_cumulative_tsn
        );
    } else {
        panic!("Failed to cast Chunk -> Forward TSN");
    }

    Ok(())
}

#[test]
fn test_select_ack_chunk_followed_by_a_payload_data_chunk() -> Result<()> {
    let raw_pkt = Bytes::from_static(&[
        0x13, 0x88, 0x13, 0x88, 0xc2, 0x98, 0x98, 0x0f, 0x58, 0xcf, 0x38,
        0xC0, // A SACK chunk follows.
        0x03, 0x00, 0x00, 0x14, 0x87, 0x73, 0xbd, 0xa4, 0x00, 0x01, 0xfe, 0x74, 0x00, 0x01, 0x00,
        0x00, 0x00, 0x02, 0x00, 0x02, // A payload data chunk follows.
        0x00, 0x07, 0x00, 0x3B, 0xA4, 0x50, 0x7B, 0xC5, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
        0x33, 0x7B, 0x22, 0x65, 0x76, 0x65, 0x6E, 0x74, 0x22, 0x3A, 0x22, 0x72, 0x65, 0x73, 0x69,
        0x7A, 0x65, 0x22, 0x2C, 0x22, 0x77, 0x69, 0x64, 0x74, 0x68, 0x22, 0x3A, 0x36, 0x36, 0x35,
        0x2C, 0x22, 0x68, 0x65, 0x69, 0x67, 0x68, 0x74, 0x22, 0x3A, 0x34, 0x39, 0x39, 0x7D, 0x00,
    ]);
    let pkt = Packet::unmarshal(&raw_pkt)?;
    assert!(
        pkt.chunks[0]
            .as_any()
            .downcast_ref::<ChunkSelectiveAck>()
            .is_some(),
        "Failed to cast Chunk -> SelectiveAck"
    );
    assert!(
        pkt.chunks[1]
            .as_any()
            .downcast_ref::<ChunkPayloadData>()
            .is_some(),
        "Failed to cast Chunk -> PayloadData"
    );
    Ok(())
}