Namespace test_multi_frame¶

Namespace List > test_multi_frame

Public Functions¶

Protected Functions¶

Public Functions Documentation¶

function test_multi_frame_boundary_sizes¶

Verify multi-frame behavior around boundary sizes.

test_multi_frame::test_multi_frame_boundary_sizes (
    size size
) 

Parameters:

• size Payload size under test.

Exercises sizes near the SF/FF boundary.

function test_multi_frame_bs_one_stmin¶

Verify block size 1 with STmin pacing.

test_multi_frame::test_multi_frame_bs_one_stmin () 

Advances time between frames to satisfy STmin.

function test_multi_frame_bs_unlimited_stmin¶

Verify unlimited block size with STmin pacing.

test_multi_frame::test_multi_frame_bs_unlimited_stmin () 

Exercises BS=0 with STmin delay.

function test_multi_frame_max_payload¶

Verify maximum payload size roundtrip.

test_multi_frame::test_multi_frame_max_payload () 

Uses a large payload to stress segmentation and reassembly.

function test_multi_frame_roundtrip¶

Verify multi-frame roundtrip delivery.

test_multi_frame::test_multi_frame_roundtrip () 

Ensures payload integrity across segmented transfer.

function test_multi_frame_timeout_n_bs¶

Verify N_Bs timeout during multi-frame send.

test_multi_frame::test_multi_frame_timeout_n_bs () 

Disables FC to force sender block-size timeout.

function test_multi_frame_timeout_n_cr¶

Verify N_Cr timeout during multi-frame receive.

test_multi_frame::test_multi_frame_timeout_n_cr () 

Drops incoming frames to force receiver timeout.

function test_multi_frame_unexpected_cf¶

Verify unexpected CF is reported.

test_multi_frame::test_multi_frame_unexpected_cf () 

Injects a CF when receiver is idle.

function test_multi_frame_wrong_sn¶

Verify wrong sequence number is reported.

test_multi_frame::test_multi_frame_wrong_sn () 

Injects a CF with unexpected SN after FF.

Protected Functions Documentation¶

function _cf_frame¶

Build a Consecutive Frame (CF) with a given sequence number.

test_multi_frame::_cf_frame (
    sn sn,
    payload payload
) 

Parameters:

• sn Sequence number (0-15).
• payload Payload bytes to embed in CF.

Returns:

CAN frame bytes representing the CF.

Encodes the 0x20 PCI with SN.

function _ff_frame¶

Build a First Frame (FF) for an ISO-TP transfer.

test_multi_frame::_ff_frame (
    payload_size payload_size,
    payload payload
) 

Parameters:

• payload_size Total payload size.
• payload Payload bytes to embed in FF.

Returns:

CAN frame bytes representing the FF.

Encodes the 0x10 PCI with 12-bit length.

function _make_payload¶

Build a deterministic payload of a given size.

test_multi_frame::_make_payload (
    size size
) 

Parameters:

• size Number of bytes to generate.

Returns:

Payload bytes.

Uses a simple modulo pattern for repeatability.

function _poll_until_receive¶

Poll the link until a response is received or steps are exhausted.

test_multi_frame::_poll_until_receive (
    link link,
    payload_size payload_size,
    steps steps,
    advance_ms advance_ms=0
) 

Parameters:

• link ISO-TP link handle.
• payload_size Expected payload size for receive.
• steps Maximum number of poll iterations.
• advance_ms Optional time advance per step in milliseconds.

Returns:

Received payload bytes or None when nothing is received.

Optionally advances the mock time between polls.

The documentation for this class was generated from the following file tests/integration/test_multi_frame.py