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from logging import getLogger, ERROR
from unittest import TestCase
from testfixtures.shouldraise import ShouldAssert
from testfixtures.mock import patch
from testfixtures import (
log_capture, compare, Comparison as C, LogCapture
)
root = getLogger()
one = getLogger('one')
two = getLogger('two')
child = getLogger('one.child')
class TestLog_Capture(TestCase):
@log_capture('two', 'one.child')
@log_capture('one')
@log_capture()
def test_logging(self, l1, l2, l3):
# we can now log as normal
root.info('1')
one.info('2')
two.info('3')
child.info('4')
# and later check what was logged
l1.check(
('root', 'INFO', '1'),
('one', 'INFO', '2'),
('two', 'INFO', '3'),
('one.child', 'INFO', '4'),
)
l2.check(
('one', 'INFO', '2'),
('one.child', 'INFO', '4')
)
l3.check(
('two', 'INFO', '3'),
('one.child', 'INFO', '4')
)
# each logger also exposes the real
# log records should anything else be neeeded
compare(l3.records, [
C('logging.LogRecord'),
C('logging.LogRecord'),
])
@log_capture(ensure_checks_above=ERROR)
def test_simple_strict(self, l):
root.error('during')
l.check(("root", "ERROR", "during"))
def test_uninstall_properly(self):
root = getLogger()
child = getLogger('child')
before_root = root.handlers[:]
before_child = child.handlers[:]
try:
old_root_level = root.level
root.setLevel(49)
old_child_level = child.level
child.setLevel(69)
@log_capture('child')
@log_capture()
def test_method(l1, l2):
root = getLogger()
root.info('1')
self.assertEqual(root.level, 1)
child = getLogger('child')
self.assertEqual(child.level, 1)
child.info('2')
l1.check(
('root', 'INFO', '1'),
('child', 'INFO', '2'),
)
l2.check(
('child', 'INFO', '2'),
)
test_method()
self.assertEqual(root.level, 49)
self.assertEqual(child.level, 69)
self.assertEqual(root.handlers, before_root)
self.assertEqual(child.handlers, before_child)
finally:
root.setLevel(old_root_level)
child.setLevel(old_child_level)
@log_capture()
def test_decorator_returns_logcapture(self, l):
# check for what we get, so we only have to write
# tests in test_logcapture.py
self.assertTrue(isinstance(l, LogCapture))
def test_remove_existing_handlers(self):
logger = getLogger()
# get original handlers
original = logger.handlers
try:
# put in a stub which will blow up if used
logger.handlers = start = [object()]
@log_capture()
def test_method(l):
logger.info('during')
l.check(('root', 'INFO', 'during'))
test_method()
compare(logger.handlers, start)
finally:
logger.handlers = original
def test_clear_global_state(self):
from logging import _handlers, _handlerList
capture = LogCapture()
capture.uninstall()
self.assertFalse(capture in _handlers)
self.assertFalse(capture in _handlerList)
def test_no_propogate(self):
logger = getLogger('child')
# paranoid check
compare(logger.propagate, True)
@log_capture('child', propagate=False)
def test_method(l):
logger.info('a log message')
l.check(('child', 'INFO', 'a log message'))
with LogCapture() as global_log:
test_method()
global_log.check()
compare(logger.propagate, True)
def test_different_attributes(self):
with LogCapture(attributes=('funcName', 'processName')) as log:
getLogger().info('oh hai')
log.check(
('test_different_attributes', 'MainProcess')
)
def test_missing_attribute(self):
with LogCapture(attributes=('msg', 'lolwut')) as log:
getLogger().info('oh %s', 'hai')
log.check(
('oh %s', None)
)
def test_single_attribute(self):
# one which isn't a string, to boot!
with LogCapture(attributes=['msg']) as log:
getLogger().info(dict(foo='bar', baz='bob'))
log.check(
dict(foo='bar', baz='bob'),
)
def test_callable_instead_of_attribute(self):
def extract_msg(record):
return {k: v for (k, v) in record.msg.items()
if k != 'baz'}
with LogCapture(attributes=extract_msg) as log:
getLogger().info(dict(foo='bar', baz='bob'))
log.check(
dict(foo='bar'),
)
def test_msg_is_none(self):
with LogCapture(attributes=('msg', 'foo')) as log:
getLogger().info(None, extra=dict(foo='bar'))
log.check(
(None, 'bar')
)
def test_normal_check(self):
with LogCapture() as log:
getLogger().info('oh hai')
with ShouldAssert(
"sequence not as expected:\n\n"
"same:\n"
"()\n\n"
"expected:\n"
"(('root', 'INFO', 'oh noez'),)\n\n"
"actual:\n"
"(('root', 'INFO', 'oh hai'),)"
):
log.check(('root', 'INFO', 'oh noez'))
def test_recursive_check(self):
with LogCapture(recursive_check=True) as log:
getLogger().info('oh hai')
with ShouldAssert(
"sequence not as expected:\n\n"
"same:\n()\n\n"
"expected:\n(('root', 'INFO', 'oh noez'),)\n\n"
"actual:\n(('root', 'INFO', 'oh hai'),)\n\n"
"While comparing [0]: sequence not as expected:\n\n"
"same:\n('root', 'INFO')\n\n"
"expected:\n"
"('oh noez',)\n\n"
"actual:\n"
"('oh hai',)\n\n"
"While comparing [0][2]: 'oh noez' (expected) != 'oh hai' (actual)"
):
log.check(('root', 'INFO', 'oh noez'))
@log_capture()
@patch('testfixtures.tests.sample1.SampleClassA')
def test_patch_then_log(self, a1, a2):
actual = [type(c).__name__ for c in (a1, a2)]
compare(actual, expected=['MagicMock', 'LogCaptureForDecorator'])
@patch('testfixtures.tests.sample1.SampleClassA')
@log_capture()
def test_log_then_patch(self, a1, a2):
actual = [type(c).__name__ for c in (a1, a2)]
compare(actual, expected=['LogCaptureForDecorator', 'MagicMock'])
class BaseCaptureTest(TestCase):
a = 33
@log_capture()
def test_logs_if_a_smaller_than_44(self, logs):
logger = getLogger()
if self.a < 44:
logger.info('{} is smaller than 44'.format(self.a))
logs.check(
('root', 'INFO', '{} is smaller than 44'.format(self.a)),
)
class SubclassCaptureTest(BaseCaptureTest):
a = 2
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