73 lines
2.6 KiB
Python
73 lines
2.6 KiB
Python
# Copyright (c) Twisted Matrix Laboratories.
|
|
# See LICENSE for details.
|
|
|
|
"""
|
|
Tests for L{twisted.internet._baseprocess} which implements process-related
|
|
functionality that is useful in all platforms supporting L{IReactorProcess}.
|
|
"""
|
|
|
|
__metaclass__ = type
|
|
|
|
from twisted.python.deprecate import getWarningMethod, setWarningMethod
|
|
from twisted.trial.unittest import TestCase
|
|
from twisted.internet._baseprocess import BaseProcess
|
|
|
|
|
|
class BaseProcessTests(TestCase):
|
|
"""
|
|
Tests for L{BaseProcess}, a parent class for other classes which represent
|
|
processes which implements functionality common to many different process
|
|
implementations.
|
|
"""
|
|
def test_callProcessExited(self):
|
|
"""
|
|
L{BaseProcess._callProcessExited} calls the C{processExited} method of
|
|
its C{proto} attribute and passes it a L{Failure} wrapping the given
|
|
exception.
|
|
"""
|
|
class FakeProto:
|
|
reason = None
|
|
|
|
def processExited(self, reason):
|
|
self.reason = reason
|
|
|
|
reason = RuntimeError("fake reason")
|
|
process = BaseProcess(FakeProto())
|
|
process._callProcessExited(reason)
|
|
process.proto.reason.trap(RuntimeError)
|
|
self.assertIs(reason, process.proto.reason.value)
|
|
|
|
|
|
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)
|