erroneous.py 文件源码

def testHiddenException(self):
        """
        What happens if an error is raised in a DelayedCall and an error is
        also raised in the test?

        L{test_reporter.TestErrorReporting.testHiddenException} checks that
        both errors get reported.

        Note that this behaviour is deprecated. A B{real} test would return a
        Deferred that got triggered by the callLater. This would guarantee the
        delayed call error gets reported.
        """
        reactor.callLater(0, self.go)
        reactor.iterate(0.01)
        self.fail("Deliberate failure to mask the hidden exception")