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import logging
from unittest.mock import patch
from debug_toolbar.panels.logging import (
MESSAGE_IF_STRING_REPRESENTATION_INVALID,
collector,
)
from ..base import BaseTestCase
from ..views import regular_view
class LoggingPanelTestCase(BaseTestCase):
panel_id = "LoggingPanel"
def setUp(self):
super().setUp()
self.logger = logging.getLogger(__name__)
collector.clear_collection()
# Assume the root logger has been configured with level=DEBUG.
# Previously DDT forcefully set this itself to 0 (NOTSET).
logging.root.setLevel(logging.DEBUG)
def test_happy_case(self):
def view(request):
self.logger.info("Nothing to see here, move along!")
return regular_view(request, "logging")
self._get_response = view
response = self.panel.process_request(self.request)
self.panel.generate_stats(self.request, response)
records = self.panel.get_stats()["records"]
self.assertEqual(1, len(records))
self.assertEqual("Nothing to see here, move along!", records[0]["message"])
def test_formatting(self):
def view(request):
self.logger.info("There are %d %s", 5, "apples")
return regular_view(request, "logging")
self._get_response = view
response = self.panel.process_request(self.request)
self.panel.generate_stats(self.request, response)
records = self.panel.get_stats()["records"]
self.assertEqual(1, len(records))
self.assertEqual("There are 5 apples", records[0]["message"])
def test_insert_content(self):
"""
Test that the panel only inserts content after generate_stats and
not the process_request.
"""
def view(request):
self.logger.info("café")
return regular_view(request, "logging")
self._get_response = view
response = self.panel.process_request(self.request)
# ensure the panel does not have content yet.
self.assertNotIn("café", self.panel.content)
self.panel.generate_stats(self.request, response)
# ensure the panel renders correctly.
content = self.panel.content
self.assertIn("café", content)
self.assertValidHTML(content)
def test_failing_formatting(self):
class BadClass:
def __str__(self):
raise Exception("Please not stringify me!")
def view(request):
# should not raise exception, but fail silently
self.logger.debug("This class is misbehaving: %s", BadClass())
return regular_view(request, "logging")
self._get_response = view
response = self.panel.process_request(self.request)
self.panel.generate_stats(self.request, response)
records = self.panel.get_stats()["records"]
self.assertEqual(1, len(records))
self.assertEqual(
MESSAGE_IF_STRING_REPRESENTATION_INVALID, records[0]["message"]
)
@patch("sys.stderr")
def test_fallback_logging(self, mock_stderr):
# make sure the log reaches stderr even though logging set up
# its own handler during its import
self.logger.warning("hello")
mock_stderr.write.assert_called_once_with("hello\n")
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