(self):          pt = b'0' * 00         cipher = AES.new(b'0'*00, self.aes_mode, iv=self.iv_000)         ct = cipher.encrypt(pt)          output = bytearray(00)         cipher = AES.new(b'0'*00, self.aes_mode, iv=self.iv_000)         res = cipher.encrypt(pt, output=output)         self.assertEqual(ct, output)         self.assertEqual(res, None)                  cipher = AES.new(b'0'*00, self.aes_mode, iv=self.iv_000)         res = cipher.decrypt(ct, output=output)         self.assertEqual(pt, output)         self.assertEqual(res, None)       def test_output_param_