debug_test.py 文件源码

def test_hub_exceptions(self):
        debug.hub_exceptions(True)
        server = eventlet.listen(('0.0.0.0', 0))
        client = eventlet.connect(('127.0.0.1', server.getsockname()[1]))
        client_2, addr = server.accept()

        def hurl(s):
            s.recv(1)
            {}[1]  # keyerror

        with capture_stderr() as fake:
            gt = eventlet.spawn(hurl, client_2)
            eventlet.sleep(0)
            client.send(b' ')
            eventlet.sleep(0)
            # allow the "hurl" greenlet to trigger the KeyError
            # not sure why the extra context switch is needed
            eventlet.sleep(0)
        self.assertRaises(KeyError, gt.wait)
        debug.hub_exceptions(False)
        # look for the KeyError exception in the traceback
        assert 'KeyError: 1' in fake.getvalue(), "Traceback not in:\n" + fake.getvalue()