test_break.py 文件源码

def testRemoveHandler(self):
        default_handler = signal.getsignal(signal.SIGINT)
        unittest.installHandler()
        unittest.removeHandler()
        self.assertEqual(signal.getsignal(signal.SIGINT), default_handler)

        # check that calling removeHandler multiple times has no ill-effect
        unittest.removeHandler()
        self.assertEqual(signal.getsignal(signal.SIGINT), default_handler)