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from twisted.logger import Logger, formatEvent
from twisted.python.failure import Failure
from twisted.trial.unittest import TestCase
from testfixtures import compare, ShouldRaise, StringComparison as S, ShouldAssert
from testfixtures.twisted import LogCapture, INFO
log = Logger()
class TestLogCapture(TestCase):
def test_simple(self):
capture = LogCapture.make(self)
log.info('er, {greeting}', greeting='hi')
capture.check((INFO, 'er, hi'))
def test_captured(self):
capture = LogCapture.make(self)
log.info('er, {greeting}', greeting='hi')
assert len(capture.events) == 1
compare(capture.events[0]['log_namespace'], expected='testfixtures.tests.test_twisted')
def test_fields(self):
capture = LogCapture.make(self, fields=('a', 'b'))
log.info('{a}, {b}', a=1, b=2)
log.info('{a}, {b}', a=3, b=4)
capture.check(
[1, 2],
[3, 4],
)
def test_field(self):
capture = LogCapture.make(self, fields=(formatEvent,))
log.info('er, {greeting}', greeting='hi')
capture.check('er, hi')
def test_check_failure_test_minimal(self):
capture = LogCapture.make(self)
try:
raise Exception('all gone wrong')
except:
log.failure('oh dear')
capture.check_failure_text('all gone wrong')
self.flushLoggedErrors()
def test_check_failure_test_maximal(self):
capture = LogCapture.make(self)
try:
raise TypeError('all gone wrong')
except:
log.failure('oh dear')
log.info("don't look at me...")
capture.check_failure_text(str(TypeError), index=0, attribute='type')
self.flushLoggedErrors()
self.flushLoggedErrors()
def test_raise_logged_failure(self):
capture = LogCapture.make(self)
try:
raise TypeError('all gone wrong')
except:
log.failure('oh dear')
with ShouldRaise(Failure) as s:
capture.raise_logged_failure()
compare(s.raised.value, expected=TypeError('all gone wrong'))
self.flushLoggedErrors()
def test_raise_later_logged_failure(self):
capture = LogCapture.make(self)
try:
raise ValueError('boom!')
except:
log.failure('oh dear')
try:
raise TypeError('all gone wrong')
except:
log.failure('what now?!')
with ShouldRaise(Failure) as s:
capture.raise_logged_failure(start_index=1)
compare(s.raised.value, expected=TypeError('all gone wrong'))
self.flushLoggedErrors()
def test_order_doesnt_matter_ok(self):
capture = LogCapture.make(self)
log.info('Failed to send BAR')
log.info('Sent FOO, length 1234')
log.info('Sent 1 Messages')
capture.check(
(INFO, S(r'Sent FOO, length \d+')),
(INFO, 'Failed to send BAR'),
(INFO, 'Sent 1 Messages'),
order_matters=False
)
def test_order_doesnt_matter_failure(self):
capture = LogCapture.make(self)
log.info('Failed to send BAR')
log.info('Sent FOO, length 1234')
log.info('Sent 1 Messages')
with ShouldAssert(
"entries not as expected:\n"
"\n"
"expected and found:\n"
"[(<LogLevel=info>, 'Failed to send BAR'), (<LogLevel=info>, 'Sent 1 Messages')]\n"
"\n"
"expected but not found:\n"
"[(<LogLevel=info>, <S:Sent FOO, length abc>)]\n"
"\n"
"other entries:\n"
"[(<LogLevel=info>, 'Sent FOO, length 1234')]"
):
capture.check(
(INFO, S('Sent FOO, length abc')),
(INFO, 'Failed to send BAR'),
(INFO, 'Sent 1 Messages'),
order_matters=False
)
def test_order_doesnt_matter_extra_in_expected(self):
capture = LogCapture.make(self)
log.info('Failed to send BAR')
log.info('Sent FOO, length 1234')
with ShouldAssert(
"entries not as expected:\n"
"\n"
"expected and found:\n"
"[(<LogLevel=info>, 'Failed to send BAR'),\n"
" (<LogLevel=info>, <S:Sent FOO, length 1234>)]\n"
"\n"
"expected but not found:\n"
"[(<LogLevel=info>, 'Sent 1 Messages')]\n"
"\n"
"other entries:\n"
"[]"
):
capture.check(
(INFO, S('Sent FOO, length 1234')),
(INFO, 'Failed to send BAR'),
(INFO, 'Sent 1 Messages'),
order_matters=False
)
def test_order_doesnt_matter_extra_in_actual(self):
capture = LogCapture.make(self)
log.info('Failed to send BAR')
log.info('Sent FOO, length 1234')
log.info('Sent 1 Messages')
with ShouldAssert(
"entries not as expected:\n"
"\n"
"expected and found:\n"
"[(<LogLevel=info>, 'Failed to send BAR'), (<LogLevel=info>, 'Sent 1 Messages')]\n"
"\n"
"expected but not found:\n"
"[(<LogLevel=info>, <S:Sent FOO, length abc>)]\n"
"\n"
"other entries:\n"
"[(<LogLevel=info>, 'Sent FOO, length 1234')]"
):
capture.check(
(INFO, S('Sent FOO, length abc')),
(INFO, 'Failed to send BAR'),
(INFO, 'Sent 1 Messages'),
order_matters=False
)
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