test_socket.py 文件源码

def testStringToIPv4(self):
        if not hasattr(socket, 'inet_ntop'):
            return # No inet_ntop() on this platform
        from socket import inet_ntoa as f, inet_ntop, AF_INET
        g = lambda a: inet_ntop(AF_INET, a)
        assertInvalid = lambda func,a: self.assertRaises(
            (socket.error, ValueError), func, a
        )

        self.assertEqual('1.0.1.0', f(b'\x01\x00\x01\x00'))
        self.assertEqual('170.85.170.85', f(b'\xaa\x55\xaa\x55'))
        self.assertEqual('255.255.255.255', f(b'\xff\xff\xff\xff'))
        self.assertEqual('1.2.3.4', f(b'\x01\x02\x03\x04'))
        assertInvalid(f, b'\x00' * 3)
        assertInvalid(f, b'\x00' * 5)
        assertInvalid(f, b'\x00' * 16)

        self.assertEqual('1.0.1.0', g(b'\x01\x00\x01\x00'))
        self.assertEqual('170.85.170.85', g(b'\xaa\x55\xaa\x55'))
        self.assertEqual('255.255.255.255', g(b'\xff\xff\xff\xff'))
        assertInvalid(g, b'\x00' * 3)
        assertInvalid(g, b'\x00' * 5)
        assertInvalid(g, b'\x00' * 16)