def test_formatDelayedCall(self):
        error = DirtyReactorAggregateError(["Foo", "bar"])
        self.assertEquals(str(error),
                          """\
Reactor was unclean.
DelayedCalls: (set twisted.internet.base.DelayedCall.debug = True to debug)
Foo
bar""")
Delayed calls are formatted nicely.
dataset/ETHPy150Open kuri65536/python-for-android/python-modules/twisted/twisted/trial/test/test_util.py/DirtyReactorAggregateErrorTest.test_formatDelayedCall