mirror of
https://github.com/rightup/pyMC_Repeater.git
synced 2026-03-28 17:43:06 +01:00
f2a5eab726
- Removed redundant original_path assignment in `RepeaterHandler` to streamline packet processing. - Introduced `_is_direct_final_hop` helper method in `PacketRouter` to determine if a packet is the final destination for direct routes with an empty path. - Updated comments in `PacketRouter` to clarify the handling of packets during routing, especially for direct forwarding scenarios. - Adjusted logic to ensure packets are correctly processed or delivered based on their routing status, enhancing overall packet management.
1308 lines
49 KiB
Python
1308 lines
49 KiB
Python
"""
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Comprehensive tests for pyMC_Repeater engine.py — RepeaterHandler.
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Covers: flood_forward, direct_forward, process_packet, duplicate detection,
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mark_seen, validate_packet, packet scoring, TX delay, cache management,
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airtime duty-cycle, and config reloading.
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"""
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import copy
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import math
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import time
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from collections import OrderedDict
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from typing import Optional
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from unittest.mock import AsyncMock, MagicMock, patch
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import pytest
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from pymc_core.protocol import Packet
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from pymc_core.protocol.constants import (
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MAX_PATH_SIZE,
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PH_ROUTE_MASK,
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PH_TYPE_SHIFT,
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ROUTE_TYPE_DIRECT,
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ROUTE_TYPE_FLOOD,
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ROUTE_TYPE_TRANSPORT_DIRECT,
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ROUTE_TYPE_TRANSPORT_FLOOD,
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)
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# ---------------------------------------------------------------------------
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# Helpers — build minimal config / mocks needed by RepeaterHandler.__init__
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# ---------------------------------------------------------------------------
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LOCAL_HASH = 0xAB # repeater's own 1-byte path hash
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def _make_config(**overrides) -> dict:
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"""Return a minimal valid config dict for RepeaterHandler."""
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cfg = {
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"repeater": {
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"mode": "forward",
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"cache_ttl": 3600,
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"use_score_for_tx": False,
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"score_threshold": 0.3,
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"send_advert_interval_hours": 0, # off in tests
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"node_name": "test-node",
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},
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"mesh": {
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"global_flood_allow": True,
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"loop_detect": "off",
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},
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"delays": {
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"tx_delay_factor": 1.0,
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"direct_tx_delay_factor": 0.5,
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},
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"duty_cycle": {
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"max_airtime_per_minute": 3600,
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"enforcement_enabled": True,
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},
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"radio": {
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"spreading_factor": 8,
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"bandwidth": 125000,
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"coding_rate": 8,
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"preamble_length": 17,
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},
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}
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# Merge overrides
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for key, val in overrides.items():
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if isinstance(val, dict) and key in cfg:
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cfg[key].update(val)
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else:
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cfg[key] = val
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return cfg
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def _make_radio():
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"""Return a mock radio with sensible defaults."""
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radio = MagicMock()
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radio.spreading_factor = 8
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radio.bandwidth = 125000
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radio.coding_rate = 8
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radio.preamble_length = 17
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radio.frequency = 915000000
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radio.tx_power = 14
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return radio
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def _make_dispatcher(radio=None):
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"""Return a mock dispatcher with a radio and local_identity."""
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dispatcher = MagicMock()
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dispatcher.radio = radio or _make_radio()
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dispatcher.local_identity = MagicMock()
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dispatcher.send_packet = AsyncMock()
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return dispatcher
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@pytest.fixture()
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def handler():
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"""Create a RepeaterHandler with mocked external dependencies."""
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config = _make_config()
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dispatcher = _make_dispatcher()
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with (
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patch("repeater.engine.StorageCollector"),
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patch("repeater.engine.RepeaterHandler._start_background_tasks"),
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):
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from repeater.engine import RepeaterHandler
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h = RepeaterHandler(config, dispatcher, LOCAL_HASH)
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return h
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def _make_flood_packet(payload: bytes = b"\x01\x02\x03\x04",
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path: bytes = b"",
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payload_type: int = 0x01) -> Packet:
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"""Build a FLOOD-routed packet."""
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pkt = Packet()
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# header: route=FLOOD(0x01), payload_type shifted, version=0
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pkt.header = ROUTE_TYPE_FLOOD | (payload_type << PH_TYPE_SHIFT)
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pkt.payload = bytearray(payload)
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pkt.payload_len = len(payload)
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pkt.path = bytearray(path)
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pkt.path_len = len(path)
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return pkt
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def _make_direct_packet(payload: bytes = b"\x01\x02\x03\x04",
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path: bytes = None,
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payload_type: int = 0x01) -> Packet:
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"""Build a DIRECT-routed packet with path[0] == LOCAL_HASH by default."""
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if path is None:
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path = bytes([LOCAL_HASH, 0xCC, 0xDD])
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pkt = Packet()
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pkt.header = ROUTE_TYPE_DIRECT | (payload_type << PH_TYPE_SHIFT)
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pkt.payload = bytearray(payload)
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pkt.payload_len = len(payload)
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pkt.path = bytearray(path)
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pkt.path_len = len(path)
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return pkt
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def _make_transport_flood_packet(payload: bytes = b"\x01\x02\x03\x04",
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path: bytes = b"",
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transport_codes=(0x1234, 0x5678)) -> Packet:
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"""Build a TRANSPORT_FLOOD-routed packet."""
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pkt = Packet()
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pkt.header = ROUTE_TYPE_TRANSPORT_FLOOD | (0x01 << PH_TYPE_SHIFT)
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pkt.payload = bytearray(payload)
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pkt.payload_len = len(payload)
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pkt.path = bytearray(path)
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pkt.path_len = len(path)
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pkt.transport_codes = list(transport_codes)
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return pkt
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def _make_transport_direct_packet(payload: bytes = b"\x01\x02\x03\x04",
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path: bytes = None,
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transport_codes=(0x1234, 0x5678)) -> Packet:
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"""Build a TRANSPORT_DIRECT-routed packet with path[0] == LOCAL_HASH."""
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if path is None:
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path = bytes([LOCAL_HASH, 0xCC])
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pkt = Packet()
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pkt.header = ROUTE_TYPE_TRANSPORT_DIRECT | (0x01 << PH_TYPE_SHIFT)
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pkt.payload = bytearray(payload)
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pkt.payload_len = len(payload)
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pkt.path = bytearray(path)
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pkt.path_len = len(path)
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pkt.transport_codes = list(transport_codes)
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return pkt
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# ===================================================================
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# 1. flood_forward
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# ===================================================================
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class TestFloodForward:
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"""flood_forward: validation, duplicate suppression, path append."""
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def test_valid_flood_returns_packet(self, handler):
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pkt = _make_flood_packet()
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result = handler.flood_forward(pkt)
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assert result is not None
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assert result is pkt # mutated in-place
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def test_local_hash_appended_to_path(self, handler):
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pkt = _make_flood_packet(path=b"\x11\x22")
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result = handler.flood_forward(pkt)
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assert result.path[-1] == LOCAL_HASH
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assert list(result.path) == [0x11, 0x22, LOCAL_HASH]
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assert result.path_len == 3
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def test_empty_path_gets_local_hash(self, handler):
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pkt = _make_flood_packet(path=b"")
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result = handler.flood_forward(pkt)
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assert list(result.path) == [LOCAL_HASH]
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assert result.path_len == 1
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def test_duplicate_flood_dropped(self, handler):
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pkt = _make_flood_packet()
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handler.flood_forward(pkt)
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pkt2 = _make_flood_packet() # same payload → same hash
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result = handler.flood_forward(pkt2)
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assert result is None
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assert pkt2.drop_reason == "Duplicate"
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def test_empty_payload_rejected(self, handler):
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pkt = _make_flood_packet(payload=b"")
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pkt.payload_len = 0
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result = handler.flood_forward(pkt)
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assert result is None
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assert "Empty payload" in pkt.drop_reason
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def test_none_payload_rejected(self, handler):
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pkt = _make_flood_packet()
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pkt.payload = None
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result = handler.flood_forward(pkt)
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assert result is None
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def test_path_at_max_rejected(self, handler):
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pkt = _make_flood_packet(path=bytes(range(MAX_PATH_SIZE)))
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result = handler.flood_forward(pkt)
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assert result is None
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assert "Path length" in pkt.drop_reason
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def test_do_not_retransmit_dropped(self, handler):
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pkt = _make_flood_packet()
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pkt.mark_do_not_retransmit()
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result = handler.flood_forward(pkt)
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assert result is None
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assert "do not retransmit" in pkt.drop_reason.lower()
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def test_global_flood_deny_plain_flood(self, handler):
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handler.config["mesh"]["global_flood_allow"] = False
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pkt = _make_flood_packet()
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# When global_flood_allow=False, flood_forward calls _check_transport_codes
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# which will fail because there are no transport codes on a plain flood
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result = handler.flood_forward(pkt)
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assert result is None
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def test_hash_computed_before_path_append(self, handler):
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"""mark_seen must use the pre-append hash so duplicate detection works
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when another node sends the same packet with or without our hash."""
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pkt1 = _make_flood_packet(payload=b"\xAA\xBB")
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hash_before = pkt1.calculate_packet_hash().hex().upper()
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handler.flood_forward(pkt1)
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# The hash stored in seen_packets should be the PRE-append hash
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assert hash_before in handler.seen_packets
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def test_path_len_updated_after_append(self, handler):
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pkt = _make_flood_packet(path=b"\x11")
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handler.flood_forward(pkt)
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assert pkt.path_len == len(pkt.path) == 2
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def test_different_payloads_not_duplicate(self, handler):
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pkt1 = _make_flood_packet(payload=b"\x01")
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pkt2 = _make_flood_packet(payload=b"\x02")
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r1 = handler.flood_forward(pkt1)
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r2 = handler.flood_forward(pkt2)
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assert r1 is not None
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assert r2 is not None
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def test_path_none_is_handled(self, handler):
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pkt = _make_flood_packet()
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pkt.path = None
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pkt.path_len = 0
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result = handler.flood_forward(pkt)
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assert result is not None
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assert list(result.path) == [LOCAL_HASH]
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# ===================================================================
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# 2. direct_forward
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# ===================================================================
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class TestDirectForward:
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"""direct_forward: next-hop check, path consumption, duplicate suppression."""
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def test_valid_direct_returns_packet(self, handler):
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pkt = _make_direct_packet()
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result = handler.direct_forward(pkt)
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assert result is not None
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def test_path_consumed(self, handler):
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pkt = _make_direct_packet(path=bytes([LOCAL_HASH, 0xCC, 0xDD]))
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result = handler.direct_forward(pkt)
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assert list(result.path) == [0xCC, 0xDD]
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assert result.path_len == 2
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def test_single_hop_path_consumed(self, handler):
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"""Single hop to us: we strip and return packet with empty path (forward so it can reach destination)."""
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pkt = _make_direct_packet(path=bytes([LOCAL_HASH]))
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result = handler.direct_forward(pkt)
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assert result is not None
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assert list(result.path) == []
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assert result.path_len == 0
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def test_wrong_next_hop_dropped(self, handler):
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pkt = _make_direct_packet(path=bytes([0xFF, 0xCC]))
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result = handler.direct_forward(pkt)
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assert result is None
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assert "not for us" in pkt.drop_reason
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def test_empty_path_dropped(self, handler):
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pkt = _make_direct_packet(path=b"")
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pkt.path_len = 0
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result = handler.direct_forward(pkt)
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assert result is None
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assert "no path" in pkt.drop_reason
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def test_none_path_dropped(self, handler):
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pkt = Packet()
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pkt.header = ROUTE_TYPE_DIRECT | (0x01 << PH_TYPE_SHIFT)
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pkt.payload = bytearray(b"\x01\x02")
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pkt.payload_len = 2
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pkt.path = None
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pkt.path_len = 0
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result = handler.direct_forward(pkt)
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assert result is None
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def test_duplicate_direct_dropped(self, handler):
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pkt = _make_direct_packet()
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handler.direct_forward(pkt)
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pkt2 = _make_direct_packet() # same payload → same hash
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result = handler.direct_forward(pkt2)
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assert result is None
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assert pkt2.drop_reason == "Duplicate"
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def test_hash_computed_before_path_consume(self, handler):
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"""mark_seen hash must match the packet as received, before path[0] removal."""
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pkt = _make_direct_packet(path=bytes([LOCAL_HASH, 0xCC]))
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hash_before = pkt.calculate_packet_hash().hex().upper()
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handler.direct_forward(pkt)
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assert hash_before in handler.seen_packets
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def test_path_len_updated_after_consume(self, handler):
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pkt = _make_direct_packet(path=bytes([LOCAL_HASH, 0xCC, 0xDD]))
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handler.direct_forward(pkt)
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assert pkt.path_len == len(pkt.path) == 2
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# ===================================================================
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# 3. process_packet — route dispatch
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# ===================================================================
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class TestProcessPacket:
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"""process_packet routes to flood_forward or direct_forward."""
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def test_flood_route_dispatched(self, handler):
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pkt = _make_flood_packet()
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result = handler.process_packet(pkt, snr=5.0)
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assert result is not None
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fwd_pkt, delay = result
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# Flood appends local hash
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assert fwd_pkt.path[-1] == LOCAL_HASH
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def test_direct_route_dispatched(self, handler):
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pkt = _make_direct_packet()
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result = handler.process_packet(pkt, snr=5.0)
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assert result is not None
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fwd_pkt, delay = result
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# Direct consumed first hop
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assert LOCAL_HASH not in fwd_pkt.path
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def test_transport_flood_dispatched(self, handler):
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pkt = _make_transport_flood_packet()
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result = handler.process_packet(pkt, snr=5.0)
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assert result is not None
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fwd_pkt, _ = result
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assert fwd_pkt.path[-1] == LOCAL_HASH
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def test_transport_direct_dispatched(self, handler):
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pkt = _make_transport_direct_packet()
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result = handler.process_packet(pkt, snr=5.0)
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assert result is not None
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def test_unknown_route_type_dropped(self, handler):
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"""A header with route bits = 0x03 is TRANSPORT_DIRECT which IS handled.
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We hackily create a truly unknown route by patching both masks."""
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pkt = _make_flood_packet()
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# All 4 route types are handled. We can verify the fallback by
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# ensuring flood forward fails, e.g. empty payload → returns None.
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pkt.payload = None
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result = handler.process_packet(pkt, snr=0.0)
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assert result is None
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def test_returns_tuple_with_delay(self, handler):
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pkt = _make_flood_packet()
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result = handler.process_packet(pkt, snr=5.0)
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assert isinstance(result, tuple)
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assert len(result) == 2
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fwd_pkt, delay = result
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assert isinstance(delay, float)
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assert delay >= 0.0
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def test_flood_forward_failure_returns_none(self, handler):
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pkt = _make_flood_packet(payload=b"")
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pkt.payload_len = 0
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result = handler.process_packet(pkt, snr=0.0)
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assert result is None
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def test_direct_forward_failure_returns_none(self, handler):
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pkt = _make_direct_packet(path=bytes([0xFF])) # wrong hop
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result = handler.process_packet(pkt, snr=0.0)
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assert result is None
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# ===================================================================
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# 4. is_duplicate / mark_seen / cache management
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# ===================================================================
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class TestDuplicateDetection:
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"""Duplicate tracking, TTL clean-up, and cache eviction."""
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def test_unseen_packet_not_duplicate(self, handler):
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pkt = _make_flood_packet()
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assert handler.is_duplicate(pkt) is False
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def test_after_mark_seen_is_duplicate(self, handler):
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pkt = _make_flood_packet()
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handler.mark_seen(pkt)
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assert handler.is_duplicate(pkt) is True
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def test_different_packets_independent(self, handler):
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pkt1 = _make_flood_packet(payload=b"\x01")
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pkt2 = _make_flood_packet(payload=b"\x02")
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handler.mark_seen(pkt1)
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assert handler.is_duplicate(pkt1) is True
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assert handler.is_duplicate(pkt2) is False
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def test_cache_eviction_at_max_size(self, handler):
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handler.max_cache_size = 5
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packets = [_make_flood_packet(payload=bytes([i])) for i in range(6)]
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for p in packets:
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handler.mark_seen(p)
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# Oldest (packets[0]) should have been evicted
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assert handler.is_duplicate(packets[0]) is False
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assert handler.is_duplicate(packets[5]) is True
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def test_cleanup_cache_removes_expired(self, handler):
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pkt = _make_flood_packet()
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handler.mark_seen(pkt)
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pkt_hash = pkt.calculate_packet_hash().hex().upper()
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# Manually expire it
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handler.seen_packets[pkt_hash] = time.time() - handler.cache_ttl - 1
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handler.cleanup_cache()
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assert handler.is_duplicate(pkt) is False
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def test_cleanup_cache_keeps_fresh(self, handler):
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pkt = _make_flood_packet()
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handler.mark_seen(pkt)
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handler.cleanup_cache()
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assert handler.is_duplicate(pkt) is True
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def test_mark_seen_stores_hex_upper_key(self, handler):
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pkt = _make_flood_packet()
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handler.mark_seen(pkt)
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for key in handler.seen_packets:
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assert key == key.upper()
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|
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# ===================================================================
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# 5. validate_packet
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# ===================================================================
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class TestValidatePacket:
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"""validate_packet: empty payload, oversized path."""
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def test_valid_packet(self, handler):
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pkt = _make_flood_packet()
|
|
valid, reason = handler.validate_packet(pkt)
|
|
assert valid is True
|
|
assert reason == ""
|
|
|
|
def test_empty_payload_fails(self, handler):
|
|
pkt = _make_flood_packet(payload=b"")
|
|
pkt.payload = None
|
|
valid, reason = handler.validate_packet(pkt)
|
|
assert valid is False
|
|
assert "Empty" in reason
|
|
|
|
def test_path_at_max_fails(self, handler):
|
|
pkt = _make_flood_packet(path=bytes(range(MAX_PATH_SIZE)))
|
|
valid, reason = handler.validate_packet(pkt)
|
|
assert valid is False
|
|
assert "MAX_PATH_SIZE" in reason
|
|
|
|
def test_path_one_below_max_passes(self, handler):
|
|
pkt = _make_flood_packet(path=bytes(range(MAX_PATH_SIZE - 1)))
|
|
valid, reason = handler.validate_packet(pkt)
|
|
assert valid is True
|
|
|
|
def test_none_packet(self, handler):
|
|
valid, reason = handler.validate_packet(None)
|
|
assert valid is False
|
|
|
|
|
|
# ===================================================================
|
|
# 6. calculate_packet_score — static method
|
|
# ===================================================================
|
|
|
|
class TestPacketScore:
|
|
"""Score: SNR thresholds, collision penalty, clamping."""
|
|
|
|
def test_below_threshold_returns_zero(self):
|
|
from repeater.engine import RepeaterHandler
|
|
# SF8 threshold is -10.0
|
|
score = RepeaterHandler.calculate_packet_score(snr=-15.0, packet_len=50, spreading_factor=8)
|
|
assert score == 0.0
|
|
|
|
def test_at_threshold_returns_zero(self):
|
|
from repeater.engine import RepeaterHandler
|
|
score = RepeaterHandler.calculate_packet_score(snr=-10.0, packet_len=50, spreading_factor=8)
|
|
assert score == 0.0
|
|
|
|
def test_above_threshold_positive(self):
|
|
from repeater.engine import RepeaterHandler
|
|
score = RepeaterHandler.calculate_packet_score(snr=0.0, packet_len=50, spreading_factor=8)
|
|
assert score > 0.0
|
|
|
|
def test_high_snr_high_score(self):
|
|
from repeater.engine import RepeaterHandler
|
|
score = RepeaterHandler.calculate_packet_score(snr=10.0, packet_len=10, spreading_factor=8)
|
|
assert score > 0.5
|
|
|
|
def test_long_packet_collision_penalty(self):
|
|
from repeater.engine import RepeaterHandler
|
|
short = RepeaterHandler.calculate_packet_score(snr=5.0, packet_len=10, spreading_factor=8)
|
|
long_ = RepeaterHandler.calculate_packet_score(snr=5.0, packet_len=250, spreading_factor=8)
|
|
assert short > long_
|
|
|
|
def test_score_clamped_to_0_1(self):
|
|
from repeater.engine import RepeaterHandler
|
|
score = RepeaterHandler.calculate_packet_score(snr=50.0, packet_len=1, spreading_factor=8)
|
|
assert 0.0 <= score <= 1.0
|
|
|
|
def test_sf_below_7_returns_zero(self):
|
|
from repeater.engine import RepeaterHandler
|
|
score = RepeaterHandler.calculate_packet_score(snr=10.0, packet_len=50, spreading_factor=6)
|
|
assert score == 0.0
|
|
|
|
def test_each_sf_has_different_threshold(self):
|
|
from repeater.engine import RepeaterHandler
|
|
scores = {}
|
|
for sf in (7, 8, 9, 10, 11, 12):
|
|
scores[sf] = RepeaterHandler.calculate_packet_score(snr=-5.0, packet_len=50, spreading_factor=sf)
|
|
# Higher SF → lower threshold → better reception at same SNR
|
|
# At SNR=-5, SF7 (threshold -7.5) should be worse than SF12 (threshold -20)
|
|
assert scores[12] > scores[7]
|
|
|
|
|
|
# ===================================================================
|
|
# 7. _calculate_tx_delay
|
|
# ===================================================================
|
|
|
|
class TestTxDelay:
|
|
"""TX delay: flood random, direct fixed, score adjustment, cap."""
|
|
|
|
def test_flood_delay_non_negative(self, handler):
|
|
pkt = _make_flood_packet()
|
|
delay = handler._calculate_tx_delay(pkt, snr=0.0)
|
|
assert delay >= 0.0
|
|
|
|
def test_flood_delay_capped_at_5s(self, handler):
|
|
handler.tx_delay_factor = 1000.0 # extreme multiplier
|
|
pkt = _make_flood_packet()
|
|
delay = handler._calculate_tx_delay(pkt, snr=0.0)
|
|
assert delay <= 5.0
|
|
|
|
def test_direct_delay_uses_factor(self, handler):
|
|
handler.direct_tx_delay_factor = 1.23
|
|
pkt = _make_direct_packet()
|
|
delay = handler._calculate_tx_delay(pkt, snr=0.0)
|
|
# Direct packets use direct_tx_delay_factor directly (in seconds)
|
|
# Score adjustment may change it, but base should be 1.23 when score is off
|
|
assert delay == pytest.approx(1.23, abs=0.01)
|
|
|
|
def test_score_adjustment_reduces_delay(self, handler):
|
|
handler.use_score_for_tx = True
|
|
pkt = _make_flood_packet(payload=b"\x01" * 50)
|
|
# High SNR → high score → shorter delay
|
|
delays = []
|
|
for _ in range(50):
|
|
d = handler._calculate_tx_delay(pkt, snr=10.0)
|
|
delays.append(d)
|
|
avg_high_snr = sum(delays) / len(delays)
|
|
|
|
# Low SNR → low score → longer delay
|
|
delays_low = []
|
|
for _ in range(50):
|
|
d = handler._calculate_tx_delay(pkt, snr=-5.0)
|
|
delays_low.append(d)
|
|
avg_low_snr = sum(delays_low) / len(delays_low)
|
|
|
|
# Using statistical comparison — average high-SNR delay should be lower
|
|
# (Both use random, but multiplier differs)
|
|
# This is non-deterministic; we just check score path doesn't crash
|
|
assert avg_high_snr >= 0.0
|
|
assert avg_low_snr >= 0.0
|
|
|
|
def test_zero_tx_delay_factor(self, handler):
|
|
handler.tx_delay_factor = 0.0
|
|
pkt = _make_flood_packet()
|
|
delay = handler._calculate_tx_delay(pkt, snr=0.0)
|
|
assert delay == 0.0
|
|
|
|
def test_transport_direct_uses_direct_delay(self, handler):
|
|
handler.direct_tx_delay_factor = 0.77
|
|
pkt = _make_transport_direct_packet()
|
|
delay = handler._calculate_tx_delay(pkt, snr=0.0)
|
|
assert delay == pytest.approx(0.77, abs=0.01)
|
|
|
|
|
|
# ===================================================================
|
|
# 8. Hash stability through forwarding operations
|
|
# ===================================================================
|
|
|
|
class TestHashStabilityThroughForwarding:
|
|
"""Verify hash is computed on original packet (before path mutation)."""
|
|
|
|
def test_flood_hash_unchanged_after_forward(self, handler):
|
|
pkt = _make_flood_packet(payload=b"\xDE\xAD")
|
|
hash_before = pkt.calculate_packet_hash().hex().upper()
|
|
|
|
handler.flood_forward(pkt)
|
|
# The hash stored should be the pre-modification hash
|
|
assert hash_before in handler.seen_packets
|
|
|
|
def test_direct_hash_unchanged_after_forward(self, handler):
|
|
pkt = _make_direct_packet(payload=b"\xBE\xEF",
|
|
path=bytes([LOCAL_HASH, 0xCC]))
|
|
hash_before = pkt.calculate_packet_hash().hex().upper()
|
|
|
|
handler.direct_forward(pkt)
|
|
assert hash_before in handler.seen_packets
|
|
|
|
def test_flood_second_identical_detected_as_duplicate(self, handler):
|
|
"""Two identical packets with the same payload (but path not yet modified)
|
|
should be correctly detected as duplicates."""
|
|
p1 = _make_flood_packet(payload=b"\xCA\xFE")
|
|
p2 = _make_flood_packet(payload=b"\xCA\xFE")
|
|
handler.flood_forward(p1)
|
|
result = handler.flood_forward(p2)
|
|
assert result is None
|
|
|
|
def test_direct_second_identical_detected_as_duplicate(self, handler):
|
|
p1 = _make_direct_packet(payload=b"\xCA\xFE",
|
|
path=bytes([LOCAL_HASH, 0x11]))
|
|
p2 = _make_direct_packet(payload=b"\xCA\xFE",
|
|
path=bytes([LOCAL_HASH, 0x11]))
|
|
handler.direct_forward(p1)
|
|
result = handler.direct_forward(p2)
|
|
assert result is None
|
|
|
|
|
|
# ===================================================================
|
|
# 9. Global flood policy
|
|
# ===================================================================
|
|
|
|
class TestGlobalFloodPolicy:
|
|
"""global_flood_allow=False blocks plain flood, transport checked."""
|
|
|
|
def test_flood_blocked_by_policy(self, handler):
|
|
handler.config["mesh"]["global_flood_allow"] = False
|
|
pkt = _make_flood_packet()
|
|
result = handler.flood_forward(pkt)
|
|
assert result is None
|
|
|
|
def test_direct_unaffected_by_flood_policy(self, handler):
|
|
handler.config["mesh"]["global_flood_allow"] = False
|
|
pkt = _make_direct_packet()
|
|
result = handler.direct_forward(pkt)
|
|
assert result is not None # direct is not blocked by flood policy
|
|
|
|
def test_transport_flood_checked_when_policy_off(self, handler):
|
|
handler.config["mesh"]["global_flood_allow"] = False
|
|
pkt = _make_transport_flood_packet()
|
|
# Will call _check_transport_codes which will fail (no storage keys)
|
|
result = handler.flood_forward(pkt)
|
|
assert result is None
|
|
|
|
|
|
class TestFloodLoopDetection:
|
|
"""MeshCore-style loop detection for flood forwarding."""
|
|
|
|
def test_loop_detect_off_allows_looped_path(self, handler):
|
|
handler.config["mesh"]["loop_detect"] = "off"
|
|
handler.reload_runtime_config()
|
|
pkt = _make_flood_packet(path=bytes([LOCAL_HASH, 0x11, LOCAL_HASH]))
|
|
result = handler.flood_forward(pkt)
|
|
assert result is not None
|
|
|
|
def test_loop_detect_minimal_drops_at_four(self, handler):
|
|
handler.config["mesh"]["loop_detect"] = "minimal"
|
|
handler.reload_runtime_config()
|
|
pkt = _make_flood_packet(path=bytes([LOCAL_HASH, LOCAL_HASH, LOCAL_HASH, LOCAL_HASH]))
|
|
result = handler.flood_forward(pkt)
|
|
assert result is None
|
|
assert "loop detected" in (pkt.drop_reason or "").lower()
|
|
|
|
def test_loop_detect_minimal_allows_below_threshold(self, handler):
|
|
handler.config["mesh"]["loop_detect"] = "minimal"
|
|
handler.reload_runtime_config()
|
|
pkt = _make_flood_packet(path=bytes([LOCAL_HASH, LOCAL_HASH, LOCAL_HASH]))
|
|
result = handler.flood_forward(pkt)
|
|
assert result is not None
|
|
|
|
def test_loop_detect_moderate_drops_at_two(self, handler):
|
|
handler.config["mesh"]["loop_detect"] = "moderate"
|
|
handler.reload_runtime_config()
|
|
pkt = _make_flood_packet(path=bytes([LOCAL_HASH, 0x22, LOCAL_HASH]))
|
|
result = handler.flood_forward(pkt)
|
|
assert result is None
|
|
|
|
def test_loop_detect_strict_drops_at_one(self, handler):
|
|
handler.config["mesh"]["loop_detect"] = "strict"
|
|
handler.reload_runtime_config()
|
|
pkt = _make_flood_packet(path=bytes([0x33, LOCAL_HASH, 0x44]))
|
|
result = handler.flood_forward(pkt)
|
|
assert result is None
|
|
|
|
|
|
# ===================================================================
|
|
# 10. Airtime / duty-cycle integration
|
|
# ===================================================================
|
|
|
|
class TestAirtimeIntegration:
|
|
"""Airtime calculation and duty-cycle enforcement."""
|
|
|
|
def test_airtime_positive(self, handler):
|
|
airtime = handler.airtime_mgr.calculate_airtime(50)
|
|
assert airtime > 0.0
|
|
|
|
def test_can_transmit_fresh(self, handler):
|
|
can_tx, wait = handler.airtime_mgr.can_transmit(100.0)
|
|
assert can_tx is True
|
|
assert wait == 0.0
|
|
|
|
def test_cannot_transmit_after_exhaustion(self, handler):
|
|
# Fill up the budget
|
|
handler.airtime_mgr.record_tx(handler.airtime_mgr.max_airtime_per_minute)
|
|
can_tx, wait = handler.airtime_mgr.can_transmit(1.0)
|
|
assert can_tx is False
|
|
assert wait > 0.0
|
|
|
|
def test_duty_cycle_disabled(self, handler):
|
|
handler.config["duty_cycle"]["enforcement_enabled"] = False
|
|
handler.airtime_mgr.config = handler.config
|
|
handler.airtime_mgr.record_tx(999999)
|
|
can_tx, wait = handler.airtime_mgr.can_transmit(999999)
|
|
assert can_tx is True
|
|
|
|
def test_airtime_increases_with_packet_size(self, handler):
|
|
short = handler.airtime_mgr.calculate_airtime(10)
|
|
long_ = handler.airtime_mgr.calculate_airtime(200)
|
|
assert long_ > short
|
|
|
|
|
|
# ===================================================================
|
|
# 11. Config reload
|
|
# ===================================================================
|
|
|
|
class TestConfigReload:
|
|
"""reload_runtime_config updates in-memory state."""
|
|
|
|
def test_tx_delay_factor_reloaded(self, handler):
|
|
handler.config["delays"]["tx_delay_factor"] = 3.14
|
|
handler.reload_runtime_config()
|
|
assert handler.tx_delay_factor == 3.14
|
|
|
|
def test_direct_tx_delay_factor_reloaded(self, handler):
|
|
handler.config["delays"]["direct_tx_delay_factor"] = 2.5
|
|
handler.reload_runtime_config()
|
|
assert handler.direct_tx_delay_factor == 2.5
|
|
|
|
def test_use_score_for_tx_reloaded(self, handler):
|
|
handler.config["repeater"]["use_score_for_tx"] = True
|
|
handler.reload_runtime_config()
|
|
assert handler.use_score_for_tx is True
|
|
|
|
def test_cache_ttl_reloaded(self, handler):
|
|
handler.config["repeater"]["cache_ttl"] = 120
|
|
handler.reload_runtime_config()
|
|
assert handler.cache_ttl == 120
|
|
|
|
|
|
# ===================================================================
|
|
# 12. _get_drop_reason
|
|
# ===================================================================
|
|
|
|
class TestGetDropReason:
|
|
"""_get_drop_reason: determine why a packet was not forwarded."""
|
|
|
|
def test_duplicate_reason(self, handler):
|
|
pkt = _make_flood_packet()
|
|
handler.mark_seen(pkt)
|
|
reason = handler._get_drop_reason(pkt)
|
|
assert reason == "Duplicate"
|
|
|
|
def test_empty_payload_reason(self, handler):
|
|
pkt = _make_flood_packet(payload=b"")
|
|
pkt.payload_len = 0
|
|
pkt.payload = bytearray()
|
|
reason = handler._get_drop_reason(pkt)
|
|
assert "Empty" in reason
|
|
|
|
def test_path_too_long_reason(self, handler):
|
|
pkt = _make_flood_packet(path=bytes(range(MAX_PATH_SIZE)))
|
|
reason = handler._get_drop_reason(pkt)
|
|
assert "Path too long" in reason
|
|
|
|
def test_flood_policy_reason(self, handler):
|
|
handler.config["mesh"]["global_flood_allow"] = False
|
|
pkt = _make_flood_packet()
|
|
reason = handler._get_drop_reason(pkt)
|
|
assert "flood" in reason.lower()
|
|
|
|
def test_direct_not_for_us_reason(self, handler):
|
|
pkt = _make_direct_packet(path=bytes([0xFF, 0xCC]))
|
|
reason = handler._get_drop_reason(pkt)
|
|
assert "not for us" in reason
|
|
|
|
def test_direct_no_path_reason(self, handler):
|
|
pkt = _make_direct_packet(path=b"")
|
|
pkt.path_len = 0
|
|
reason = handler._get_drop_reason(pkt)
|
|
assert "no path" in reason
|
|
|
|
|
|
# ===================================================================
|
|
# 13. Transport route forwarding
|
|
# ===================================================================
|
|
|
|
class TestTransportForwarding:
|
|
"""TRANSPORT_FLOOD and TRANSPORT_DIRECT: packet routing through process_packet."""
|
|
|
|
def test_transport_flood_appends_path(self, handler):
|
|
pkt = _make_transport_flood_packet(path=b"\x11")
|
|
result = handler.process_packet(pkt, snr=5.0)
|
|
assert result is not None
|
|
fwd_pkt, _ = result
|
|
assert fwd_pkt.path[-1] == LOCAL_HASH
|
|
assert len(fwd_pkt.path) == 2
|
|
|
|
def test_transport_direct_consumes_path(self, handler):
|
|
pkt = _make_transport_direct_packet(path=bytes([LOCAL_HASH, 0xCC]))
|
|
result = handler.process_packet(pkt, snr=5.0)
|
|
assert result is not None
|
|
fwd_pkt, _ = result
|
|
assert list(fwd_pkt.path) == [0xCC]
|
|
|
|
def test_transport_codes_preserved_after_flood(self, handler):
|
|
pkt = _make_transport_flood_packet(transport_codes=(0xAAAA, 0xBBBB))
|
|
result = handler.process_packet(pkt, snr=5.0)
|
|
assert result is not None
|
|
fwd_pkt, _ = result
|
|
assert fwd_pkt.transport_codes == [0xAAAA, 0xBBBB]
|
|
|
|
def test_transport_codes_preserved_after_direct(self, handler):
|
|
pkt = _make_transport_direct_packet(transport_codes=(0x1111, 0x2222))
|
|
result = handler.process_packet(pkt, snr=5.0)
|
|
assert result is not None
|
|
fwd_pkt, _ = result
|
|
assert fwd_pkt.transport_codes == [0x1111, 0x2222]
|
|
|
|
|
|
# ===================================================================
|
|
# 14. Statistics tracking
|
|
# ===================================================================
|
|
|
|
class TestStatistics:
|
|
"""RX/TX/dropped counters and recent_packets list."""
|
|
|
|
def test_initial_counters_zero(self, handler):
|
|
assert handler.rx_count == 0
|
|
assert handler.forwarded_count == 0
|
|
assert handler.dropped_count == 0
|
|
|
|
def test_get_stats_returns_dict(self, handler):
|
|
with patch.object(handler, "storage", None):
|
|
stats = handler.get_stats()
|
|
assert "rx_count" in stats
|
|
assert "forwarded_count" in stats
|
|
assert "dropped_count" in stats
|
|
assert "local_hash" in stats
|
|
assert "uptime_seconds" in stats
|
|
|
|
def test_get_stats_local_hash_format(self, handler):
|
|
with patch.object(handler, "storage", None):
|
|
stats = handler.get_stats()
|
|
assert stats["local_hash"] == f"0x{LOCAL_HASH:02x}"
|
|
|
|
|
|
# ===================================================================
|
|
# 15. Edge cases and regression tests
|
|
# ===================================================================
|
|
|
|
class TestEdgeCases:
|
|
"""Miscellaneous edge cases and regressions."""
|
|
|
|
def test_path_as_list_converted_to_bytearray(self, handler):
|
|
"""flood_forward should handle path being a list (not bytearray)."""
|
|
pkt = _make_flood_packet()
|
|
pkt.path = [0x11, 0x22]
|
|
pkt.path_len = 2
|
|
result = handler.flood_forward(pkt)
|
|
assert result is not None
|
|
assert isinstance(result.path, bytearray)
|
|
assert list(result.path) == [0x11, 0x22, LOCAL_HASH]
|
|
|
|
def test_flood_forward_idempotent_on_second_call(self, handler):
|
|
"""Calling flood_forward again with the SAME packet object should
|
|
detect as duplicate (the first call already mark_seen'd it)."""
|
|
pkt = _make_flood_packet(payload=b"\xFF" * 10)
|
|
r1 = handler.flood_forward(pkt)
|
|
assert r1 is not None
|
|
# Now pkt has local_hash appended, but hash was computed pre-append.
|
|
# A new packet with same original payload should be duplicate.
|
|
pkt2 = _make_flood_packet(payload=b"\xFF" * 10)
|
|
r2 = handler.flood_forward(pkt2)
|
|
assert r2 is None
|
|
|
|
def test_large_payload_still_forwarded(self, handler):
|
|
pkt = _make_flood_packet(payload=bytes(range(256)) * 4)
|
|
result = handler.flood_forward(pkt)
|
|
assert result is not None
|
|
|
|
def test_payload_type_encoding_in_header(self, handler):
|
|
"""Verify header construction encodes payload_type correctly."""
|
|
for pt in range(16):
|
|
pkt = _make_flood_packet(payload=bytes([pt, 0xFF]), payload_type=pt)
|
|
assert pkt.get_payload_type() == pt
|
|
result = handler.flood_forward(pkt)
|
|
assert result is not None
|
|
|
|
def test_many_distinct_packets_all_forwarded(self, handler):
|
|
"""100 unique packets should all be forwarded (no false duplicates)."""
|
|
for i in range(100):
|
|
pkt = _make_flood_packet(payload=i.to_bytes(4, "big"))
|
|
result = handler.flood_forward(pkt)
|
|
assert result is not None, f"Packet {i} incorrectly detected as duplicate"
|
|
|
|
def test_cache_eviction_order_is_fifo(self, handler):
|
|
handler.max_cache_size = 3
|
|
pkts = [_make_flood_packet(payload=bytes([i])) for i in range(4)]
|
|
for p in pkts:
|
|
handler.mark_seen(p)
|
|
# First one evicted
|
|
assert handler.is_duplicate(pkts[0]) is False
|
|
# Last three still present
|
|
for p in pkts[1:]:
|
|
assert handler.is_duplicate(p) is True
|
|
|
|
def test_do_not_retransmit_with_custom_drop_reason(self, handler):
|
|
pkt = _make_flood_packet()
|
|
pkt.mark_do_not_retransmit()
|
|
pkt.drop_reason = "Custom reason"
|
|
result = handler.flood_forward(pkt)
|
|
assert result is None
|
|
# Custom reason should be preserved (not overwritten)
|
|
assert pkt.drop_reason == "Custom reason"
|
|
|
|
def test_monitor_mode_skips_processing(self, handler):
|
|
"""In monitor mode, process_packet is not called at all in __call__,
|
|
but process_packet itself doesn't check mode — that's done in __call__.
|
|
We test that process_packet works irrespective of mode."""
|
|
handler.config["repeater"]["mode"] = "monitor"
|
|
pkt = _make_flood_packet()
|
|
# process_packet doesn't check mode — should still work
|
|
result = handler.process_packet(pkt, snr=0.0)
|
|
assert result is not None
|
|
|
|
|
|
# ===================================================================
|
|
# 16. Airtime calculation correctness
|
|
# ===================================================================
|
|
|
|
class TestAirtimeCalculation:
|
|
"""Semtech LoRa airtime formula validation."""
|
|
|
|
def test_known_airtime_sf7_125khz(self, handler):
|
|
"""SF7, 125kHz, CR4/5, 10-byte payload — well-known reference value."""
|
|
mgr = handler.airtime_mgr
|
|
# Override to known settings
|
|
at = mgr.calculate_airtime(10, spreading_factor=7, bandwidth_hz=125000,
|
|
coding_rate=5, preamble_len=8)
|
|
# Semtech calculator: ~36ms for these params
|
|
assert 30.0 < at < 50.0
|
|
|
|
def test_sf12_much_slower_than_sf7(self, handler):
|
|
mgr = handler.airtime_mgr
|
|
at7 = mgr.calculate_airtime(50, spreading_factor=7)
|
|
at12 = mgr.calculate_airtime(50, spreading_factor=12)
|
|
# SF12 is roughly 32x slower than SF7 per symbol
|
|
assert at12 > at7 * 10
|
|
|
|
def test_zero_payload_still_has_preamble(self, handler):
|
|
mgr = handler.airtime_mgr
|
|
at = mgr.calculate_airtime(0)
|
|
assert at > 0.0
|
|
|
|
|
|
# ===================================================================
|
|
# 17. Curated good-packet and bad-packet arrays
|
|
# ===================================================================
|
|
|
|
# ---- 20 GOOD packets: all should be forwarded by process_packet ----
|
|
GOOD_PACKETS = [
|
|
# (id, description, builder)
|
|
("good_flood_minimal",
|
|
"Flood, 1-byte payload, empty path",
|
|
lambda: _make_flood_packet(payload=b"\x01")),
|
|
|
|
("good_flood_typical",
|
|
"Flood, 10-byte payload, 2-hop path",
|
|
lambda: _make_flood_packet(payload=bytes(range(10)), path=b"\x11\x22")),
|
|
|
|
("good_flood_max_payload_type",
|
|
"Flood, payload_type=15 (max 4-bit)",
|
|
lambda: _make_flood_packet(payload=b"\xAA\xBB", payload_type=15)),
|
|
|
|
("good_flood_payload_type_0",
|
|
"Flood, payload_type=0 (plain text)",
|
|
lambda: _make_flood_packet(payload=b"\x01\x02\x03", payload_type=0)),
|
|
|
|
("good_flood_long_payload",
|
|
"Flood, 200-byte payload",
|
|
lambda: _make_flood_packet(payload=bytes(range(200)))),
|
|
|
|
("good_flood_single_byte_path",
|
|
"Flood, path has 1 prior hop",
|
|
lambda: _make_flood_packet(payload=b"\xDE\xAD", path=b"\x42")),
|
|
|
|
("good_flood_binary_payload",
|
|
"Flood, all-zero payload",
|
|
lambda: _make_flood_packet(payload=b"\x00" * 16)),
|
|
|
|
("good_flood_high_entropy",
|
|
"Flood, high-entropy random-looking payload",
|
|
lambda: _make_flood_packet(payload=bytes(i ^ 0xA5 for i in range(64)))),
|
|
|
|
("good_flood_advert_type",
|
|
"Flood, payload_type=4 (ADVERT)",
|
|
lambda: _make_flood_packet(payload=b"\xAB\x01\x02\x03", payload_type=4)),
|
|
|
|
("good_direct_minimal",
|
|
"Direct, 1-byte payload, single hop to us (forward with empty path)",
|
|
lambda: _make_direct_packet(payload=b"\x01", path=bytes([LOCAL_HASH]))),
|
|
|
|
("good_direct_multihop",
|
|
"Direct, 3-hop remaining path (us + 2 more)",
|
|
lambda: _make_direct_packet(payload=b"\xCA\xFE", path=bytes([LOCAL_HASH, 0x11, 0x22]))),
|
|
|
|
("good_direct_long_payload",
|
|
"Direct, 150-byte payload",
|
|
lambda: _make_direct_packet(payload=bytes(range(150)), path=bytes([LOCAL_HASH, 0xBB]))),
|
|
|
|
("good_direct_type_2",
|
|
"Direct, payload_type=2 (ACK)",
|
|
lambda: _make_direct_packet(payload=b"\x01\x02", path=bytes([LOCAL_HASH]),
|
|
payload_type=2)),
|
|
|
|
("good_direct_long_remaining_path",
|
|
"Direct, 10 hops remaining after us",
|
|
lambda: _make_direct_packet(payload=b"\xFF\xEE",
|
|
path=bytes([LOCAL_HASH] + list(range(10))))),
|
|
|
|
("good_transport_flood_basic",
|
|
"Transport flood, basic payload + transport codes",
|
|
lambda: _make_transport_flood_packet(payload=b"\x01\x02\x03\x04")),
|
|
|
|
("good_transport_flood_with_path",
|
|
"Transport flood, existing 3-hop path",
|
|
lambda: _make_transport_flood_packet(payload=b"\xAA\xBB", path=b"\x11\x22\x33")),
|
|
|
|
("good_transport_flood_max_codes",
|
|
"Transport flood, max uint16 transport codes",
|
|
lambda: _make_transport_flood_packet(payload=b"\xFF",
|
|
transport_codes=(0xFFFF, 0xFFFF))),
|
|
|
|
("good_transport_direct_basic",
|
|
"Transport direct, basic hop to us",
|
|
lambda: _make_transport_direct_packet(payload=b"\x01\x02")),
|
|
|
|
("good_transport_direct_long_path",
|
|
"Transport direct, 5 remaining hops",
|
|
lambda: _make_transport_direct_packet(
|
|
payload=b"\xDE\xAD\xBE\xEF",
|
|
path=bytes([LOCAL_HASH, 0x11, 0x22, 0x33, 0x44]))),
|
|
]
|
|
|
|
|
|
# ---- 20 BAD packets: all should be dropped / return None ----
|
|
BAD_PACKETS = [
|
|
# (id, description, builder)
|
|
("bad_empty_payload",
|
|
"Empty bytearray payload",
|
|
lambda: _make_flood_packet(payload=b""),
|
|
"Empty payload"),
|
|
|
|
("bad_none_payload",
|
|
"payload = None",
|
|
lambda: (lambda p: (setattr(p, "payload", None), p)[-1])(_make_flood_packet()),
|
|
"Empty payload"),
|
|
|
|
("bad_path_at_max",
|
|
"Path exactly MAX_PATH_SIZE — no room to append",
|
|
lambda: _make_flood_packet(payload=b"\x01", path=bytes(range(MAX_PATH_SIZE))),
|
|
"Path length"),
|
|
|
|
("bad_flood_path_near_max",
|
|
"Flood, path = MAX_PATH_SIZE - 1 (63 hops; path_len encodes 0-63, cannot append)",
|
|
lambda: _make_flood_packet(payload=b"\xFF", path=bytes(range(MAX_PATH_SIZE - 1))),
|
|
"cannot append"),
|
|
|
|
("bad_path_over_max",
|
|
"Path exceeds MAX_PATH_SIZE",
|
|
lambda: _make_flood_packet(payload=b"\x01", path=bytes(range(MAX_PATH_SIZE + 5))),
|
|
"Path length"),
|
|
|
|
("bad_do_not_retransmit",
|
|
"Marked do-not-retransmit",
|
|
lambda: (lambda p: (p.mark_do_not_retransmit(), p)[-1])(_make_flood_packet()),
|
|
"do not retransmit"),
|
|
|
|
("bad_direct_wrong_hop",
|
|
"Direct packet, path[0] != LOCAL_HASH",
|
|
lambda: _make_direct_packet(path=bytes([0xFF, 0xCC])),
|
|
"not for us"),
|
|
|
|
("bad_direct_empty_path",
|
|
"Direct packet with empty path",
|
|
lambda: _make_direct_packet(path=b""),
|
|
"no path"),
|
|
|
|
("bad_direct_none_path",
|
|
"Direct packet with path = None",
|
|
lambda: (lambda p: (setattr(p, "path", None), setattr(p, "path_len", 0), p)[-1])(
|
|
_make_direct_packet()),
|
|
"no path"),
|
|
|
|
("bad_flood_policy_off",
|
|
"Plain flood when global_flood_allow=False (needs config override)",
|
|
lambda: _make_flood_packet(payload=b"\x01\x02"),
|
|
"transport codes"),
|
|
|
|
("bad_transport_flood_policy_off",
|
|
"Transport flood when policy off (no valid transport key)",
|
|
lambda: _make_transport_flood_packet(payload=b"\x01\x02"),
|
|
"transport"),
|
|
|
|
("bad_direct_empty_payload",
|
|
"Direct with empty payload (now caught by validate_packet)",
|
|
lambda: (lambda p: (setattr(p, "payload", bytearray()), setattr(p, "payload_len", 0), p)[-1])(
|
|
_make_direct_packet(path=bytes([LOCAL_HASH]))),
|
|
"Empty payload"),
|
|
|
|
("bad_flood_zero_len_payload",
|
|
"Flood with payload_len forced to 0",
|
|
lambda: (lambda p: (setattr(p, "payload_len", 0), setattr(p, "payload", bytearray()), p)[-1])(
|
|
_make_flood_packet(payload=b"\x01")),
|
|
"Empty payload"),
|
|
|
|
("bad_direct_only_wrong_hops",
|
|
"Direct path of all 0xFF bytes (none match LOCAL_HASH)",
|
|
lambda: _make_direct_packet(path=bytes([0xFF, 0xFE, 0xFD])),
|
|
"not for us"),
|
|
|
|
("bad_transport_direct_wrong_hop",
|
|
"Transport direct with wrong first hop",
|
|
lambda: _make_transport_direct_packet(path=bytes([0x01, 0x02])),
|
|
"not for us"),
|
|
|
|
("bad_transport_direct_empty_path",
|
|
"Transport direct with empty path",
|
|
lambda: _make_transport_direct_packet(path=b""),
|
|
"no path"),
|
|
|
|
("bad_transport_direct_none_path",
|
|
"Transport direct with path = None",
|
|
lambda: (lambda p: (setattr(p, "path", None), setattr(p, "path_len", 0), p)[-1])(
|
|
_make_transport_direct_packet()),
|
|
"no path"),
|
|
|
|
("bad_flood_payload_255_zeros",
|
|
"Flood with payload = bytearray(0) (empty)",
|
|
lambda: (lambda p: (setattr(p, "payload", bytearray()), setattr(p, "payload_len", 0), p)[-1])(
|
|
_make_flood_packet()),
|
|
"Empty payload"),
|
|
|
|
("bad_direct_none_payload",
|
|
"Direct with None payload (now caught by validate_packet)",
|
|
lambda: (lambda p: (setattr(p, "payload", None), p)[-1])(
|
|
_make_direct_packet(path=bytes([LOCAL_HASH]))),
|
|
"Empty payload"),
|
|
|
|
("bad_flood_do_not_retransmit_custom",
|
|
"Flood, do-not-retransmit with custom drop reason",
|
|
lambda: (lambda p: (p.mark_do_not_retransmit(), setattr(p, "drop_reason", "Advert consumed"), p)[-1])(
|
|
_make_flood_packet(payload=b"\xAB")),
|
|
"Advert consumed"),
|
|
|
|
("bad_direct_do_not_retransmit",
|
|
"Direct, marked do-not-retransmit (now caught by direct_forward)",
|
|
lambda: (lambda p: (p.mark_do_not_retransmit(), p)[-1])(
|
|
_make_direct_packet(payload=b"\x99", path=bytes([LOCAL_HASH, 0x11]))),
|
|
"do not retransmit"),
|
|
]
|
|
|
|
|
|
# Pytest ids for readable output
|
|
_good_ids = [g[0] for g in GOOD_PACKETS]
|
|
_bad_ids = [b[0] for b in BAD_PACKETS]
|
|
|
|
|
|
class TestGoodPacketArray:
|
|
"""All 20 good packets should be forwarded successfully."""
|
|
|
|
@pytest.mark.parametrize(
|
|
"name, desc, builder", GOOD_PACKETS, ids=_good_ids,
|
|
)
|
|
def test_process_packet_forwards(self, handler, name, desc, builder):
|
|
pkt = builder()
|
|
result = handler.process_packet(pkt, snr=5.0)
|
|
assert result is not None, f"[{name}] {desc} — unexpectedly dropped"
|
|
fwd_pkt, delay = result
|
|
assert delay >= 0.0
|
|
|
|
@pytest.mark.parametrize(
|
|
"name, desc, builder", GOOD_PACKETS, ids=_good_ids,
|
|
)
|
|
def test_good_packet_not_duplicate_on_first_see(self, handler, name, desc, builder):
|
|
pkt = builder()
|
|
assert handler.is_duplicate(pkt) is False, f"[{name}] falsely flagged as duplicate"
|
|
|
|
@pytest.mark.parametrize(
|
|
"name, desc, builder", GOOD_PACKETS, ids=_good_ids,
|
|
)
|
|
def test_good_packet_path_modified(self, handler, name, desc, builder):
|
|
pkt = builder()
|
|
route = pkt.header & PH_ROUTE_MASK
|
|
original_path = list(pkt.path) if pkt.path else []
|
|
|
|
result = handler.process_packet(pkt, snr=5.0)
|
|
assert result is not None
|
|
|
|
fwd_pkt, _ = result
|
|
if route in (ROUTE_TYPE_FLOOD, ROUTE_TYPE_TRANSPORT_FLOOD):
|
|
assert fwd_pkt.path[-1] == LOCAL_HASH, f"[{name}] local hash not appended"
|
|
assert len(fwd_pkt.path) == len(original_path) + 1
|
|
else:
|
|
# Direct: first hop consumed
|
|
assert len(fwd_pkt.path) == len(original_path) - 1
|
|
|
|
|
|
class TestBadPacketArray:
|
|
"""All 20 bad packets should be dropped by the engine."""
|
|
|
|
@pytest.mark.parametrize(
|
|
"name, desc, builder, expected_reason",
|
|
BAD_PACKETS, ids=_bad_ids,
|
|
)
|
|
def test_process_packet_drops(self, handler, name, desc, builder, expected_reason):
|
|
# Two entries need global_flood_allow=False
|
|
if "policy_off" in name:
|
|
handler.config["mesh"]["global_flood_allow"] = False
|
|
|
|
pkt = builder()
|
|
result = handler.process_packet(pkt, snr=5.0)
|
|
assert result is None, f"[{name}] {desc} — should have been dropped"
|
|
|
|
@pytest.mark.parametrize(
|
|
"name, desc, builder, expected_reason",
|
|
BAD_PACKETS, ids=_bad_ids,
|
|
)
|
|
def test_drop_reason_set(self, handler, name, desc, builder, expected_reason):
|
|
if "policy_off" in name:
|
|
handler.config["mesh"]["global_flood_allow"] = False
|
|
|
|
pkt = builder()
|
|
handler.process_packet(pkt, snr=5.0)
|
|
assert pkt.drop_reason is not None, f"[{name}] drop_reason not set"
|
|
assert expected_reason.lower() in pkt.drop_reason.lower(), (
|
|
f"[{name}] expected '{expected_reason}' in drop_reason, got '{pkt.drop_reason}'"
|
|
)
|
|
|
|
@pytest.mark.parametrize(
|
|
"name, desc, builder, expected_reason",
|
|
BAD_PACKETS, ids=_bad_ids,
|
|
)
|
|
def test_bad_packet_not_marked_seen(self, handler, name, desc, builder, expected_reason):
|
|
"""Dropped packets must NOT pollute the seen cache."""
|
|
if "policy_off" in name:
|
|
handler.config["mesh"]["global_flood_allow"] = False
|
|
|
|
pkt = builder()
|
|
handler.process_packet(pkt, snr=5.0)
|
|
# Should not be in seen_packets (except do-not-retransmit and policy
|
|
# packets which fail AFTER validation but BEFORE mark_seen)
|
|
# Actually none of these should be marked seen — the engine only
|
|
# calls mark_seen on packets that pass all checks.
|
|
pkt_hash = pkt.calculate_packet_hash().hex().upper() if pkt.payload else None
|
|
if pkt_hash:
|
|
assert pkt_hash not in handler.seen_packets, (
|
|
f"[{name}] bad packet was incorrectly added to seen cache"
|
|
)
|