def _getProtocol(self):
getWarningMethod()(
"Resolver.protocol is deprecated; use Resolver.queryUDP instead.",
PendingDeprecationWarning,
stacklevel=0)
self.protocol = dns.DNSDatagramProtocol(self)
return self.protocol
def _getProtocol(self):
getWarningMethod()(
"Resolver.protocol is deprecated; use Resolver.queryUDP instead.",
PendingDeprecationWarning,
stacklevel=0)
self.protocol = dns.DNSDatagramProtocol(self)
return self.protocol
def _callProcessExited(self, reason):
default = object()
processExited = getattr(self.proto, 'processExited', default)
if processExited is default:
getWarningMethod()(
_missingProcessExited % (qual(self.proto.__class__),),
DeprecationWarning, stacklevel=0)
else:
processExited(Failure(reason))
def _callProcessExited(self, reason):
default = object()
processExited = getattr(self.proto, 'processExited', default)
if processExited is default:
getWarningMethod()(_missingProcessExited %
(qual(self.proto.__class__), ),
DeprecationWarning,
stacklevel=0)
else:
processExited(Failure(reason))
def _callProcessExited(self, reason):
default = object()
processExited = getattr(self.proto, 'processExited', default)
if processExited is default:
getWarningMethod()(
_missingProcessExited % (qual(self.proto.__class__),),
DeprecationWarning, stacklevel=0)
else:
try:
processExited(Failure(reason))
except BaseException:
err(None, "unexpected error in processExited")
def test_callProcessExitedMissing(self):
"""
L{BaseProcess._callProcessExited} emits a L{DeprecationWarning} if the
object referred to by its C{proto} attribute has no C{processExited}
method.
"""
class FakeProto:
pass
reason = object()
process = BaseProcess(FakeProto())
self.addCleanup(setWarningMethod, getWarningMethod())
warnings = []
def collect(message, category, stacklevel):
warnings.append((message, category, stacklevel))
setWarningMethod(collect)
process._callProcessExited(reason)
[(message, category, stacklevel)] = warnings
self.assertEqual(
message,
"Since Twisted 8.2, IProcessProtocol.processExited is required. "
"%s.%s must implement it." %
(FakeProto.__module__, FakeProto.__name__))
self.assertIs(category, DeprecationWarning)
# The stacklevel doesn't really make sense for this kind of
# deprecation. Requiring it to be 0 will at least avoid pointing to
# any part of Twisted or a random part of the application's code, which
# I think would be more misleading than having it point inside the
# warning system itself. -exarkun
self.assertEqual(stacklevel, 0)
def test_callProcessExitedMissing(self):
"""
L{BaseProcess._callProcessExited} emits a L{DeprecationWarning} if the
object referred to by its C{proto} attribute has no C{processExited}
method.
"""
class FakeProto:
pass
reason = object()
process = BaseProcess(FakeProto())
self.addCleanup(setWarningMethod, getWarningMethod())
warnings = []
def collect(message, category, stacklevel):
warnings.append((message, category, stacklevel))
setWarningMethod(collect)
process._callProcessExited(reason)
[(message, category, stacklevel)] = warnings
self.assertEqual(
message,
"Since Twisted 8.2, IProcessProtocol.processExited is required. "
"%s.%s must implement it." % (
FakeProto.__module__, FakeProto.__name__))
self.assertIdentical(category, DeprecationWarning)
# The stacklevel doesn't really make sense for this kind of
# deprecation. Requiring it to be 0 will at least avoid pointing to
# any part of Twisted or a random part of the application's code, which
# I think would be more misleading than having it point inside the
# warning system itself. -exarkun
self.assertEqual(stacklevel, 0)
def test_resolverProtocol(self):
"""
Reading L{client.Resolver.protocol} causes a deprecation warning to be
emitted and evaluates to an instance of L{DNSDatagramProtocol}.
"""
resolver = client.Resolver(servers=[('example.com', 53)])
self.addCleanup(setWarningMethod, getWarningMethod())
warnings = []
setWarningMethod(lambda message, category, stacklevel: warnings.append(
(message, category, stacklevel)))
protocol = resolver.protocol
self.assertIsInstance(protocol, dns.DNSDatagramProtocol)
self.assertEqual(
warnings,
[("Resolver.protocol is deprecated; use "
"Resolver.queryUDP instead.", PendingDeprecationWarning, 0)])
self.assertIdentical(protocol, resolver.protocol)
def _captureDeprecationWarnings(self, f, *args, **kwargs):
"""
Call C{f} and capture all deprecation warnings.
"""
warnings = []
def accumulateDeprecations(message, category, stacklevel):
self.assertEqual(DeprecationWarning, category)
self.assertEqual(stacklevel, 2)
warnings.append(message)
originalMethod = deprecate.getWarningMethod()
deprecate.setWarningMethod(accumulateDeprecations)
try:
result = f(*args, **kwargs)
finally:
deprecate.setWarningMethod(originalMethod)
return (warnings, result)
def _classDeprecation(self, cls, methodName):
test = cls()
result = reporter.TestResult()
original = deprecate.getWarningMethod()
self.addCleanup(deprecate.setWarningMethod, original)
warnings = []
# XXX deprecate.collectWarnings()? Maybe with support for filtering.
deprecate.setWarningMethod(
lambda message, category, stacklevel: warnings.append(
(message, category, stacklevel)))
test(result)
message, category, stacklevel = warnings[0]
self.assertIdentical(category, DeprecationWarning)
self.assertEqual(
message,
methodName + ", deprecated since Twisted 8.2.0, was overridden "
"by " + cls.__module__ + "." + cls.__name__ + ". Use " +
methodName.replace('Class', '') + " instead.")
def test_resolverProtocol(self):
"""
Reading L{client.Resolver.protocol} causes a deprecation warning to be
emitted and evaluates to an instance of L{DNSDatagramProtocol}.
"""
resolver = client.Resolver(servers=[('example.com', 53)])
self.addCleanup(setWarningMethod, getWarningMethod())
warnings = []
setWarningMethod(
lambda message, category, stacklevel:
warnings.append((message, category, stacklevel)))
protocol = resolver.protocol
self.assertIsInstance(protocol, dns.DNSDatagramProtocol)
self.assertEqual(
warnings, [("Resolver.protocol is deprecated; use "
"Resolver.queryUDP instead.",
PendingDeprecationWarning, 0)])
self.assertIdentical(protocol, resolver.protocol)
def _classDeprecation(self, cls, methodName):
test = cls()
result = reporter.TestResult()
original = deprecate.getWarningMethod()
self.addCleanup(deprecate.setWarningMethod, original)
warnings = []
# XXX deprecate.collectWarnings()? Maybe with support for filtering.
deprecate.setWarningMethod(
lambda message, category, stacklevel: warnings.append((
message, category, stacklevel)))
test(result)
message, category, stacklevel = warnings[0]
self.assertIdentical(category, DeprecationWarning)
self.assertEqual(
message,
methodName + ", deprecated since Twisted 8.2.0, was overridden "
"by " + cls.__module__ + "." + cls.__name__ + ". Use " +
methodName.replace('Class', '') + " instead.")
def setupWorkerTransition():
"""Hook Twisted deprecation machinery to use custom warning class
for Worker API deprecation warnings."""
default_warn_method = getWarningMethod()
def custom_warn_method(message, category, stacklevel):
if stacklevel is not None:
stacklevel += 1
if _WORKER_WARNING_MARK in message:
# Message contains our mark - it's Worker API Renaming warning,
# issue it appropriately.
message = message.replace(_WORKER_WARNING_MARK, "")
warnings.warn(DeprecatedWorkerNameWarning(message), message,
stacklevel)
else:
# Other's warning message
default_warn_method(message, category, stacklevel)
setWarningMethod(custom_warn_method)
def setupWorkerTransition():
"""Hook Twisted deprecation machinery to use custom warning class
for Worker API deprecation warnings."""
default_warn_method = getWarningMethod()
def custom_warn_method(message, category, stacklevel):
if stacklevel is not None:
stacklevel += 1
if _WORKER_WARNING_MARK in message:
# Message contains our mark - it's Worker API Renaming warning,
# issue it appropriately.
message = message.replace(_WORKER_WARNING_MARK, "")
warnings.warn(
DeprecatedWorkerNameWarning(message), message, stacklevel)
else:
# Other's warning message
default_warn_method(message, category, stacklevel)
setWarningMethod(custom_warn_method)
