← Back to branch summary

~ntt-pf-lab/nova/monkey_patch_notification

« back to all changes in this revision

Viewing changes to vendor/Twisted-10.0.0/twisted/internet/test/test_baseprocess.py

  • Committer: Jesse Andrews
  • Date: 2010-05-28 06:05:26 UTC
  • Revision ID: git-v1:bf6e6e718cdc7488e2da87b21e258ccc065fe499
initial commit

Show diffs side-by-side

added added

removed removed

Lines of Context:
vendor/Twisted-10.0.0/twisted/internet/test/test_baseprocess.py
 
1
# Copyright (c) 2008 Twisted Matrix Laboratories.
 
2
# See LICENSE for details.
 
3
 
 
4
"""
 
5
Tests for L{twisted.internet._baseprocess} which implements process-related
 
6
functionality that is useful in all platforms supporting L{IReactorProcess}.
 
7
"""
 
8
 
 
9
__metaclass__ = type
 
10
 
 
11
from twisted.python.deprecate import getWarningMethod, setWarningMethod
 
12
from twisted.trial.unittest import TestCase
 
13
from twisted.internet._baseprocess import BaseProcess
 
14
 
 
15
 
 
16
class BaseProcessTests(TestCase):
 
17
    """
 
18
    Tests for L{BaseProcess}, a parent class for other classes which represent
 
19
    processes which implements functionality common to many different process
 
20
    implementations.
 
21
    """
 
22
    def test_callProcessExited(self):
 
23
        """
 
24
        L{BaseProcess._callProcessExited} calls the C{processExited} method of
 
25
        its C{proto} attribute and passes it a L{Failure} wrapping the given
 
26
        exception.
 
27
        """
 
28
        class FakeProto:
 
29
            reason = None
 
30
 
 
31
            def processExited(self, reason):
 
32
                self.reason = reason
 
33
 
 
34
        reason = RuntimeError("fake reason")
 
35
        process = BaseProcess(FakeProto())
 
36
        process._callProcessExited(reason)
 
37
        process.proto.reason.trap(RuntimeError)
 
38
        self.assertIdentical(reason, process.proto.reason.value)
 
39
 
 
40
 
 
41
    def test_callProcessExitedMissing(self):
 
42
        """
 
43
        L{BaseProcess._callProcessExited} emits a L{DeprecationWarning} if the
 
44
        object referred to by its C{proto} attribute has no C{processExited}
 
45
        method.
 
46
        """
 
47
        class FakeProto:
 
48
            pass
 
49
 
 
50
        reason = object()
 
51
        process = BaseProcess(FakeProto())
 
52
 
 
53
        self.addCleanup(setWarningMethod, getWarningMethod())
 
54
        warnings = []
 
55
        def collect(message, category, stacklevel):
 
56
            warnings.append((message, category, stacklevel))
 
57
        setWarningMethod(collect)
 
58
 
 
59
        process._callProcessExited(reason)
 
60
 
 
61
        [(message, category, stacklevel)] = warnings
 
62
        self.assertEqual(
 
63
            message,
 
64
            "Since Twisted 8.2, IProcessProtocol.processExited is required.  "
 
65
            "%s.%s must implement it." % (
 
66
                FakeProto.__module__, FakeProto.__name__))
 
67
        self.assertIdentical(category, DeprecationWarning)
 
68
        # The stacklevel doesn't really make sense for this kind of
 
69
        # deprecation.  Requiring it to be 0 will at least avoid pointing to
 
70
        # any part of Twisted or a random part of the application's code, which
 
71
        # I think would be more misleading than having it point inside the
 
72
        # warning system itself. -exarkun
 
73
        self.assertEqual(stacklevel, 0)