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# Copyright (c) Twisted Matrix Laboratories.
# See LICENSE for details.
"""
Tests for L{twisted.internet.interfaces}.
"""
from twisted.trial import unittest
class TestIFinishableConsumer(unittest.TestCase):
"""
L{IFinishableConsumer} is deprecated.
"""
def lookForDeprecationWarning(self, testmethod):
"""
Importing C{testmethod} emits a deprecation warning.
"""
warningsShown = self.flushWarnings([testmethod])
self.assertEqual(len(warningsShown), 1)
self.assertIdentical(warningsShown[0]['category'], DeprecationWarning)
self.assertEqual(
warningsShown[0]['message'],
"twisted.internet.interfaces.IFinishableConsumer "
"was deprecated in Twisted 11.1.0: Please use IConsumer "
"(and IConsumer.unregisterProducer) instead.")
def test_deprecationWithDirectImport(self):
"""
Importing L{IFinishableConsumer} causes a deprecation warning
"""
from twisted.internet.interfaces import IFinishableConsumer
self.lookForDeprecationWarning(
TestIFinishableConsumer.test_deprecationWithDirectImport)
def test_deprecationWithIndirectImport(self):
"""
Importing L{interfaces} and implementing
L{interfaces.IFinishableConsumer} causes a deprecation warning
"""
from zope.interface import implements
from twisted.internet import interfaces
class FakeIFinishableConsumer:
implements(interfaces.IFinishableConsumer)
def finish(self):
pass
self.lookForDeprecationWarning(
TestIFinishableConsumer.test_deprecationWithIndirectImport)
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