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from nose.exc import SkipTest
from nose.tools import *
from nose.twistedtools import *
try:
from twisted.internet.defer import Deferred
from twisted.internet.error import DNSLookupError
except ImportError:
raise SkipTest('twisted not available; skipping')
_multiprocess_ = False
def teardown():
# print "stopping reactor"
stop_reactor()
class CustomError(Exception):
pass
# FIXME move all dns-using tests to functional
# Should succeed unless google is down
#@deferred
def test_resolve():
return reactor.resolve("www.google.com")
test_resolve = deferred()(test_resolve)
# Raises TypeError because the function does not return a Deferred
#@raises(TypeError)
#@deferred()
def test_raises_bad_return():
print reactor
reactor.resolve("www.python.org")
test_raises_bad_return = raises(TypeError)(deferred()(test_raises_bad_return))
# Check we propagate twisted Failures as Exceptions
# (XXX this test might take some time: find something better?)
#@raises(DNSLookupError)
#@deferred()
def test_raises_twisted_error():
return reactor.resolve("x.y.z")
test_raises_twisted_error = raises(DNSLookupError)(
deferred()(test_raises_twisted_error))
# Check we detect Exceptions inside the callback chain
#@raises(CustomError)
#@deferred(timeout=1.0)
def test_raises_callback_error():
d = Deferred()
def raise_error(_):
raise CustomError()
def finish():
d.callback(None)
d.addCallback(raise_error)
reactor.callLater(0.01, finish)
return d
test_raises_callback_error = raises(CustomError)(
deferred(timeout=1.0)(test_raises_callback_error))
# Check we detect Exceptions inside the test body
#@raises(CustomError)
#@deferred(timeout=1.0)
def test_raises_plain_error():
raise CustomError
test_raises_plain_error = raises(CustomError)(
deferred(timeout=1.0)(test_raises_plain_error))
# The deferred is triggered before the timeout: ok
#@deferred(timeout=1.0)
def test_timeout_ok():
d = Deferred()
def finish():
d.callback(None)
reactor.callLater(0.01, finish)
return d
test_timeout_ok = deferred(timeout=1.0)(test_timeout_ok)
# The deferred is triggered after the timeout: failure
#@raises(TimeExpired)
#@deferred(timeout=0.1)
def test_timeout_expired():
d = Deferred()
def finish():
d.callback(None)
reactor.callLater(1.0, finish)
return d
test_timeout_expired = raises(TimeExpired)(
deferred(timeout=0.1)(test_timeout_expired))
if __name__ == '__main__':
from nose import runmodule
runmodule()
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