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#!/usr/bin/env python3
"""Offline unit tests for bcpr device parse + BcprKissBackend (no UART)."""
from __future__ import annotations
import configparser
import importlib.util
import sys
from pathlib import Path
from unittest.mock import patch
ROOT = Path(__file__).resolve().parents[2]
sys.path.insert(0, str(ROOT / "stacks" / "daemon"))
from device_backends import ( # noqa: E402
BcprKissBackend,
DeviceBackendConfig,
parse_device_spec,
)
def load_max25d():
from importlib.machinery import SourceFileLoader
loader = SourceFileLoader("max25d", str(ROOT / "stacks" / "daemon" / "max25d.py"))
spec = importlib.util.spec_from_loader("max25d", loader)
mod = importlib.util.module_from_spec(spec)
sys.modules["max25d"] = mod
loader.exec_module(mod)
return mod
def test_bcpr_kiss_default_link() -> None:
cfg = DeviceBackendConfig(
device_id="max25e0",
backend_type="max25-bcpr-kiss",
bcpr_device="bc0",
)
backend = BcprKissBackend(cfg, on_rx=lambda _l: None)
assert backend._path == "/var/run/max25-bcpr/kiss-bc0"
assert backend.backend_type == "max25-bcpr-kiss"
assert backend._is_pty is True
def test_max25e0_default_addrs() -> None:
from device_backends import MAX25E0_DEFAULT_IPV4, MAX25E0_DEFAULT_IPV6
text = """
[devices]
max25e0 = max25-bcpr:bc0
"""
cp = configparser.ConfigParser()
cp.read_string(text)
from device_backends import parse_device_spec
dev = parse_device_spec("max25e0", "max25-bcpr:bc0", cp, {"hardware": "modems"})
assert dev.ipv4 == MAX25E0_DEFAULT_IPV4
assert dev.ipv6 == MAX25E0_DEFAULT_IPV6
# override
text2 = """
[devices]
max25e0 = max25-bcpr:bc0
[device.max25e0]
ipv4 = 10.0.0.25/24
ipv6 = fd00::25/128
"""
cp2 = configparser.ConfigParser()
cp2.read_string(text2)
dev2 = parse_device_spec("max25e0", "max25-bcpr:bc0", cp2, {"hardware": "modems"})
assert dev2.ipv4 == "10.0.0.25/24"
assert dev2.ipv6 == "fd00::25/128"
# fork inherits from [device.max25e0] (INI colon keys need care — parse by id)
text3 = """
[device.max25e0]
ipv4 = 10.0.0.25/24
ipv6 = fd00::25/128
"""
cp3 = configparser.ConfigParser()
cp3.read_string(text3)
fork = parse_device_spec("max25e0:bc1", "max25-bcpr:bc1", cp3, {"hardware": "modems"})
assert fork.ipv4 == "10.0.0.25/24"
assert fork.ipv6 == "fd00::25/128"
def test_parse_bcpr_spec() -> None:
cp = configparser.ConfigParser()
cp.read_string(
"""
[device.max25e0]
kiss_link = /var/run/max25-bcpr/kiss-bc0
max25_bcpr_ini = /etc/max25/max25-bcpr.ini
"""
)
dev = parse_device_spec("max25e0", "max25-bcpr:bc0", cp, {"hardware": "tncs"})
assert dev.backend_type == "max25-bcpr-kiss"
assert dev.max25_bcpr_device == "bc0"
assert dev.kiss_link == "/var/run/max25-bcpr/kiss-bc0"
assert dev.max25_bcpr_ini == "/etc/max25/max25-bcpr.ini"
def test_feature_gate_bcpr() -> None:
mod = load_max25d()
cp = configparser.ConfigParser()
cp.read_string(
"""
[features]
max25_bcpr = no
[devices]
default = max25e0
max25e0 = max25-bcpr:bc0
"""
)
cfg = mod.DaemonConfig()
cfg.feature_max25_bcpr = False
devices = mod.parse_devices(cp, cfg)
# parse_devices itself may include; load_config filters by features
assert any(d.device_id == "max25e0" for d in devices)
filtered = [d for d in devices if mod._device_allowed_by_features(d, cfg)]
assert filtered == []
cfg.feature_max25_bcpr = True
filtered = [d for d in devices if mod._device_allowed_by_features(d, cfg)]
assert len(filtered) == 1
assert filtered[0].backend_type == "max25-bcpr-kiss"
def test_bcpr_kiss_pty_skips_tcdrain() -> None:
cfg = DeviceBackendConfig(
device_id="max25e0",
backend_type="max25-bcpr-kiss",
kiss_link="/tmp/max25-bcpr/kiss-bc0",
bcpr_device="bc0",
)
backend = BcprKissBackend(cfg, on_rx=lambda _l: None)
backend._fd = 99
backend._kiss_active = True
written: list[bytes] = []
drained = {"n": 0}
def fake_drain(_fd: int) -> None:
drained["n"] += 1
with patch("os.write", side_effect=lambda _fd, data: written.append(data) or len(data)):
with patch("termios.tcdrain", side_effect=fake_drain):
ok, display = backend.transmit("CB-0", "QST", "hello", ax25_ui=True)
assert ok, display
assert written and written[0].startswith(b"\xc0")
assert drained["n"] == 0
def test_bcpr_kiss_stabilize_reopens_on_inode_mismatch() -> None:
cfg = DeviceBackendConfig(
device_id="max25e0",
backend_type="max25-bcpr-kiss",
kiss_link="/tmp/max25-bcpr/kiss-bc0",
bcpr_device="bc0",
)
backend = BcprKissBackend(cfg, on_rx=lambda _l: None)
backend._fd = 7
backend._kiss_active = True
backend.status = "ready"
backend._mycall = "CB-0"
calls: list[str] = []
class _St:
def __init__(self, ino: int) -> None:
self.st_ino = ino
self.st_dev = 1
with patch("os.path.exists", return_value=True):
with patch("os.stat", return_value=_St(200)):
with patch("os.fstat", return_value=_St(100)):
with patch.object(backend, "close", side_effect=lambda: calls.append("close")):
with patch.object(backend, "open", side_effect=lambda: calls.append("open") or True):
with patch.object(
backend,
"attach_session",
side_effect=lambda c: calls.append(f"attach:{c}") or True,
):
ok = backend.stabilize_session("CB-0", force=False)
assert ok
assert calls == ["close", "open", "attach:CB-0"]
def main() -> int:
test_bcpr_kiss_default_link()
test_max25e0_default_addrs()
test_parse_bcpr_spec()
test_feature_gate_bcpr()
test_bcpr_kiss_pty_skips_tcdrain()
test_bcpr_kiss_stabilize_reopens_on_inode_mismatch()
print("OK: bcpr backend tests")
return 0
if __name__ == "__main__":
sys.exit(main())
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