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import twisted.python.failure
from twisted.internet import defer
from twisted.internet import reactor
from .. import unittest
from synapse.util.async import sleep
from synapse.util import logcontext
from synapse.util.logcontext import LoggingContext
class LoggingContextTestCase(unittest.TestCase):
def _check_test_key(self, value):
self.assertEquals(
LoggingContext.current_context().test_key, value
)
def test_with_context(self):
with LoggingContext() as context_one:
context_one.test_key = "test"
self._check_test_key("test")
@defer.inlineCallbacks
def test_sleep(self):
@defer.inlineCallbacks
def competing_callback():
with LoggingContext() as competing_context:
competing_context.test_key = "competing"
yield sleep(0)
self._check_test_key("competing")
reactor.callLater(0, competing_callback)
with LoggingContext() as context_one:
context_one.test_key = "one"
yield sleep(0)
self._check_test_key("one")
def _test_preserve_fn(self, function):
sentinel_context = LoggingContext.current_context()
callback_completed = [False]
@defer.inlineCallbacks
def cb():
context_one.test_key = "one"
yield function()
self._check_test_key("one")
callback_completed[0] = True
with LoggingContext() as context_one:
context_one.test_key = "one"
# fire off function, but don't wait on it.
logcontext.preserve_fn(cb)()
self._check_test_key("one")
# now wait for the function under test to have run, and check that
# the logcontext is left in a sane state.
d2 = defer.Deferred()
def check_logcontext():
if not callback_completed[0]:
reactor.callLater(0.01, check_logcontext)
return
# make sure that the context was reset before it got thrown back
# into the reactor
try:
self.assertIs(LoggingContext.current_context(),
sentinel_context)
d2.callback(None)
except BaseException:
d2.errback(twisted.python.failure.Failure())
reactor.callLater(0.01, check_logcontext)
# test is done once d2 finishes
return d2
def test_preserve_fn_with_blocking_fn(self):
@defer.inlineCallbacks
def blocking_function():
yield sleep(0)
return self._test_preserve_fn(blocking_function)
def test_preserve_fn_with_non_blocking_fn(self):
@defer.inlineCallbacks
def nonblocking_function():
with logcontext.PreserveLoggingContext():
yield defer.succeed(None)
return self._test_preserve_fn(nonblocking_function)
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