test_poplib.py 文件源码

def test_stls_context(self):
        expected = b'+OK Begin TLS negotiation'
        ctx = ssl.SSLContext(ssl.PROTOCOL_TLSv1)
        ctx.load_verify_locations(CAFILE)
        ctx.verify_mode = ssl.CERT_REQUIRED
        ctx.check_hostname = True
        with self.assertRaises(ssl.CertificateError):
            resp = self.client.stls(context=ctx)
        self.client = poplib.POP3("localhost", self.server.port, timeout=3)
        resp = self.client.stls(context=ctx)
        self.assertEqual(resp, expected)