Files
DECNET/tests/test_file_handler.py
anti 55896b0caa Add RFC 5424 syslog logging to all service templates
- decnet/logging/syslog_formatter.py: RFC 5424 formatter (local0 facility,
  decnet@55555 SD element ID, full escaping per §6.3.3)
- decnet/logging/file_handler.py: rotating file handler (10 MB / 5 backups),
  path configurable via DECNET_LOG_FILE env var
- templates/decnet_logging.py: combined syslog_line / write_syslog_file /
  forward_syslog helper distributed to all 22 service template dirs
- All templates/*/server.py: replaced ad-hoc JSON _forward/_log with RFC 5424
  syslog_line + write_syslog_file + forward_syslog
- All templates/*/Dockerfile: COPY decnet_logging.py /opt/
- DecnetConfig: added log_file field; CLI: --log-file flag;
  composer injects DECNET_LOG_FILE env var into service containers
- tests/test_syslog_formatter.py + tests/test_file_handler.py: 25 new tests

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-04-04 04:31:00 -03:00

72 lines
2.2 KiB
Python

"""Tests for the syslog file handler."""
import logging
import os
from pathlib import Path
import pytest
import decnet.logging.file_handler as fh
@pytest.fixture(autouse=True)
def reset_handler(tmp_path, monkeypatch):
"""Reset the module-level logger between tests."""
monkeypatch.setattr(fh, "_handler", None)
monkeypatch.setattr(fh, "_logger", None)
monkeypatch.setenv(fh._LOG_FILE_ENV, str(tmp_path / "test.log"))
yield
# Remove handlers to avoid file lock issues on next test
if fh._logger is not None:
for h in list(fh._logger.handlers):
h.close()
fh._logger.removeHandler(h)
fh._handler = None
fh._logger = None
def test_write_creates_log_file(tmp_path):
log_path = tmp_path / "decnet.log"
os.environ[fh._LOG_FILE_ENV] = str(log_path)
fh.write_syslog("<134>1 2026-04-04T12:00:00+00:00 h svc - e - test message")
assert log_path.exists()
assert "test message" in log_path.read_text()
def test_write_appends_multiple_lines(tmp_path):
log_path = tmp_path / "decnet.log"
os.environ[fh._LOG_FILE_ENV] = str(log_path)
for i in range(3):
fh.write_syslog(f"<134>1 ts host svc - event{i} -")
lines = log_path.read_text().splitlines()
assert len(lines) == 3
assert "event0" in lines[0]
assert "event2" in lines[2]
def test_get_log_path_default(monkeypatch):
monkeypatch.delenv(fh._LOG_FILE_ENV, raising=False)
assert fh.get_log_path() == Path(fh._DEFAULT_LOG_FILE)
def test_get_log_path_custom(monkeypatch, tmp_path):
custom = str(tmp_path / "custom.log")
monkeypatch.setenv(fh._LOG_FILE_ENV, custom)
assert fh.get_log_path() == Path(custom)
def test_rotating_handler_configured(tmp_path):
log_path = tmp_path / "r.log"
os.environ[fh._LOG_FILE_ENV] = str(log_path)
logger = fh._get_logger()
handler = logger.handlers[0]
assert isinstance(handler, logging.handlers.RotatingFileHandler)
assert handler.maxBytes == fh._MAX_BYTES
assert handler.backupCount == fh._BACKUP_COUNT
def test_write_syslog_does_not_raise_on_bad_path(monkeypatch):
monkeypatch.setenv(fh._LOG_FILE_ENV, "/no/such/dir/that/exists/decnet.log")
# Should not raise — falls back to StreamHandler
fh.write_syslog("<134>1 ts h svc - e -")