# vim: set fileencoding=utf-8
import unittest

from bemani.common import AESCipher


class TestAESCipher(unittest.TestCase):

    def test_pad(self) -> None:
        aes = AESCipher('a wonderful key')
        self.assertEqual(aes._AESCipher__pad(''), '0.--------------')
        self.assertEqual(aes._AESCipher__unpad(aes._AESCipher__pad('')), '')
        self.assertEqual(aes._AESCipher__pad('1337'), '4.1337----------')
        self.assertEqual(aes._AESCipher__unpad(aes._AESCipher__pad('1337')), '1337')
        self.assertEqual(aes._AESCipher__pad('aaaaaaaaaaaaaaaa'), '16.aaaaaaaaaaaaaaaa-------------')
        self.assertEqual(aes._AESCipher__unpad(aes._AESCipher__pad('aaaaaaaaaaaaaaaa')), 'aaaaaaaaaaaaaaaa')
        self.assertEqual(aes._AESCipher__pad('aaaaaaaaaaaaa'), '13.aaaaaaaaaaaaa')
        self.assertEqual(aes._AESCipher__unpad(aes._AESCipher__pad('aaaaaaaaaaaaa')), 'aaaaaaaaaaaaa')

    def test_crypto(self) -> None:
        aes = AESCipher('a wonderful key')
        ciphertext = aes.encrypt('testing')
        plaintext = aes.decrypt(ciphertext)
        self.assertEqual(plaintext, 'testing')
        self.assertNotEqual(ciphertext, plaintext)