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test_logger.py

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"""Unit tests for logger.py."""

from __future__ import annotations

import logging

from unittest.mock import call, patch

from zeroconf._logger import QuietLogger, set_logger_level_if_unset

def test_loading_logger():

"""Test loading logger does not change level unless it is unset."""

log = logging.getLogger("zeroconf")

log.setLevel(logging.CRITICAL)

set_logger_level_if_unset()

log = logging.getLogger("zeroconf")

assert log.level == logging.CRITICAL

log = logging.getLogger("zeroconf")

log.setLevel(logging.NOTSET)

set_logger_level_if_unset()

log = logging.getLogger("zeroconf")

assert log.level == logging.WARNING

def test_log_warning_once():

"""Test we only log with warning level once."""

QuietLogger._seen_logs = {}

quiet_logger = QuietLogger()

with (

patch("zeroconf._logger.log.warning") as mock_log_warning,

patch("zeroconf._logger.log.debug") as mock_log_debug,

):

quiet_logger.log_warning_once("the warning")

assert mock_log_warning.mock_calls

assert not mock_log_debug.mock_calls

with (

patch("zeroconf._logger.log.warning") as mock_log_warning,

patch("zeroconf._logger.log.debug") as mock_log_debug,

):

quiet_logger.log_warning_once("the warning")

assert not mock_log_warning.mock_calls

assert mock_log_debug.mock_calls

def test_log_exception_warning():

"""Test we only log with warning level once."""

QuietLogger._seen_logs = {}

quiet_logger = QuietLogger()

with (

patch("zeroconf._logger.log.warning") as mock_log_warning,

patch("zeroconf._logger.log.debug") as mock_log_debug,

):

quiet_logger.log_exception_warning("the exception warning")

assert mock_log_warning.mock_calls

assert not mock_log_debug.mock_calls

with (

patch("zeroconf._logger.log.warning") as mock_log_warning,

patch("zeroconf._logger.log.debug") as mock_log_debug,

):

quiet_logger.log_exception_warning("the exception warning")

assert not mock_log_warning.mock_calls

assert mock_log_debug.mock_calls

def test_llog_exception_debug():

"""Test we only log with a trace once."""

QuietLogger._seen_logs = {}

quiet_logger = QuietLogger()

with patch("zeroconf._logger.log.debug") as mock_log_debug:

quiet_logger.log_exception_debug("the exception")

assert mock_log_debug.mock_calls == [call("the exception", exc_info=True)]

with patch("zeroconf._logger.log.debug") as mock_log_debug:

quiet_logger.log_exception_debug("the exception")

assert mock_log_debug.mock_calls == [call("the exception", exc_info=False)]

def test_log_exception_once():

"""Test we only log with warning level once."""

QuietLogger._seen_logs = {}

quiet_logger = QuietLogger()

exc = Exception()

with (

patch("zeroconf._logger.log.warning") as mock_log_warning,

patch("zeroconf._logger.log.debug") as mock_log_debug,

):

quiet_logger.log_exception_once(exc, "the exceptional exception warning")

assert mock_log_warning.mock_calls

assert not mock_log_debug.mock_calls

with (

patch("zeroconf._logger.log.warning") as mock_log_warning,

patch("zeroconf._logger.log.debug") as mock_log_debug,

):

quiet_logger.log_exception_once(exc, "the exceptional exception warning")

assert not mock_log_warning.mock_calls

assert mock_log_debug.mock_calls