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Captured logging in tests with self.assertLogs().

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This commit is contained in:
Claude Paroz 2018-04-29 11:02:51 +02:00 • committed by Tim Graham
parent 607970f31c
commit 523e04dfeb
3 changed files with 66 additions and 84 deletions
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53
tests/template_tests/test_logging.py
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@ -4,29 +4,7 @@ from django.template import Engine, Variable, VariableDoesNotExist
from django.test import SimpleTestCase
class TestHandler(logging.Handler):
def __init__(self):
super().__init__()
self.log_record = None
def emit(self, record):
self.log_record = record
class BaseTemplateLoggingTestCase(SimpleTestCase):
def setUp(self):
self.test_handler = TestHandler()
self.logger = logging.getLogger('django.template')
self.original_level = self.logger.level
self.logger.addHandler(self.test_handler)
self.logger.setLevel(self.loglevel)
def tearDown(self):
self.logger.removeHandler(self.test_handler)
self.logger.level = self.original_level
class VariableResolveLoggingTests(BaseTemplateLoggingTestCase):
class VariableResolveLoggingTests(SimpleTestCase):
loglevel = logging.DEBUG
def test_log_on_variable_does_not_exist_silent(self):
@ -52,31 +30,38 @@ class VariableResolveLoggingTests(BaseTemplateLoggingTestCase):
def __getitem__(self, item):
return self.__dict__[item]
Variable('article').resolve(TestObject())
with self.assertLogs('django.template', self.loglevel) as cm:
Variable('article').resolve(TestObject())
self.assertEqual(len(cm.records), 1)
log_record = cm.records[0]
self.assertEqual(
self.test_handler.log_record.getMessage(),
log_record.getMessage(),
"Exception while resolving variable 'article' in template 'template_name'."
)
self.assertIsNotNone(self.test_handler.log_record.exc_info)
raised_exception = self.test_handler.log_record.exc_info[1]
self.assertIsNotNone(log_record.exc_info)
raised_exception = log_record.exc_info[1]
self.assertEqual(str(raised_exception), 'Attribute does not exist.')
def test_log_on_variable_does_not_exist_not_silent(self):
with self.assertRaises(VariableDoesNotExist):
Variable('article.author').resolve({'article': {'section': 'News'}})
with self.assertLogs('django.template', self.loglevel) as cm:
with self.assertRaises(VariableDoesNotExist):
Variable('article.author').resolve({'article': {'section': 'News'}})
self.assertEqual(len(cm.records), 1)
log_record = cm.records[0]
self.assertEqual(
self.test_handler.log_record.getMessage(),
log_record.getMessage(),
"Exception while resolving variable 'author' in template 'unknown'."
)
self.assertIsNotNone(self.test_handler.log_record.exc_info)
raised_exception = self.test_handler.log_record.exc_info[1]
self.assertIsNotNone(log_record.exc_info)
raised_exception = log_record.exc_info[1]
self.assertEqual(
str(raised_exception),
"Failed lookup for key [author] in {'section': 'News'}"
)
def test_no_log_when_variable_exists(self):
Variable('article.section').resolve({'article': {'section': 'News'}})
self.assertIsNone(self.test_handler.log_record)
with self.assertRaisesMessage(AssertionError, 'no logs'):
with self.assertLogs('django.template', self.loglevel):
Variable('article.section').resolve({'article': {'section': 'News'}})