test_agent.py 文件源码

def test_deprecatedDuckPolicy(self):
        """
        Passing something that duck-types I{like} a L{web client context
        factory <twisted.web.client.WebClientContextFactory>} - something that
        does not provide L{IPolicyForHTTPS} - to L{Agent} emits a
        L{DeprecationWarning} even if you don't actually C{import
        WebClientContextFactory} to do it.
        """
        def warnMe():
            client.Agent(MemoryReactorClock(),
                         "does-not-provide-IPolicyForHTTPS")
        warnMe()
        warnings = self.flushWarnings([warnMe])
        self.assertEqual(len(warnings), 1)
        [warning] = warnings
        self.assertEqual(warning['category'], DeprecationWarning)
        self.assertEqual(
            warning['message'],
            "'does-not-provide-IPolicyForHTTPS' was passed as the HTTPS "
            "policy for an Agent, but it does not provide IPolicyForHTTPS.  "
            "Since Twisted 14.0, you must pass a provider of IPolicyForHTTPS."
        )