我在两个文件（TrialTest1和TrialTest2）中编写了两个相同的测试类（和）test_trial1.py，它们test_trial2.py几乎是相同的（唯一的区别是类名）：

from twisted.internet import reactor
from twisted.trial import unittest


class TrialTest1(unittest.TestCase):

    def setUp(self):
        print("setUp()")

    def test_main(self):
        print("test_main")
        reactor.callLater(1, self._called_by_deffered1)
        reactor.run()

    def _called_by_deffered1(self):
        print("_called_by_deffered1")
        reactor.callLater(1, self._called_by_deffered2)

    def _called_by_deffered2(self):
        print("_called_by_deffered2")
        reactor.stop()

    def tearDown(self):
        print("tearDown()")

当我独立运行每个测试时，一切都很好。但是，当我同时启动两者时，将得到以下输出：

setUp()
test_main
_called_by_deffered1
_called_by_deffered2
tearDown()
setUp()
test_main
tearDown()

Error
Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/twisted/internet/defer.py", line 137, in maybeDeferred
    result = f(*args, **kw)
  File "/usr/lib/python2.7/site-packages/twisted/internet/utils.py", line 203, in runWithWarningsSuppressed
    reraise(exc_info[1], exc_info[2])
  File "/usr/lib/python2.7/site-packages/twisted/internet/utils.py", line 199, in runWithWarningsSuppressed
    result = f(*a, **kw)
  File "/home/kartoch/works/python/netkython/tests/test_twisted_trial2.py", line 13, in test_main
    reactor.run()
  File "/usr/lib/python2.7/site-packages/twisted/internet/base.py", line 1191, in run
    self.startRunning(installSignalHandlers=installSignalHandlers)
  File "/usr/lib/python2.7/site-packages/twisted/internet/base.py", line 1171, in startRunning
    ReactorBase.startRunning(self)
  File "/usr/lib/python2.7/site-packages/twisted/internet/base.py", line 683, in startRunning
    raise error.ReactorNotRestartable()
ReactorNotRestartable


Error
DirtyReactorAggregateError: Reactor was unclean.
DelayedCalls: (set twisted.internet.base.DelayedCall.debug = True to debug)
<DelayedCall 0x8d6482c [0.98535490036s] called=0 cancelled=0 TrialTest2._called_by_deffered1()>


Process finished with exit code 0

第一次测试后，似乎反应器没有正确关闭。有人知道问题出在哪里吗？似乎tearDown()被称为早期（_called_by_deffered1在第二项测试之前），也许会使用一种修复deferTearDown方法（未记录的单元测试方法）。

编辑

建议的解决方案之一是删除reactor.run()，reactor.stop()因为一个反应堆无法重新启动，并且默认情况下，您只有一个反应堆实例可用于所有测试：

class TrialTest1(unittest.TestCase):

    def setUp(self):
        print("setUp()")

    def test_main(self):
        print("test_main")
        reactor.callLater(1, self._called_by_deffered1)

    def _called_by_deffered1(self):
        print("_called_by_deffered1")
        reactor.callLater(1, self._called_by_deffered2)

    def _called_by_deffered2(self):
        print("_called_by_deffered2")

    def tearDown(self):
        print("tearDown()")

但是，当删除对此类方法的调用时，如果不执行_called_by_deffered方法，测试将失败：

setUp()
test_main
tearDown()

Error
DirtyReactorAggregateError: Reactor was unclean.
DelayedCalls: (set twisted.internet.base.DelayedCall.debug = True to debug)
<DelayedCall 0x94967ec [0.99936413765s] called=0 cancelled=0 TrialTest1._called_by_deffered1()>

setUp()
test_main
tearDown()

Error
DirtyReactorAggregateError: Reactor was unclean.
DelayedCalls: (set twisted.internet.base.DelayedCall.debug = True to debug)
<DelayedCall 0x94968cc [0.99958896637s] called=0 cancelled=0 TrialTest2._called_by_deffered1()>

如果我想只用一个测试之间共享的电抗器的情况下，怎样 _called_by_deffered的方法可以是测试的一部分（ 即
前执行tearDown）？