text: #!/usr/bin/env python3
  from __future__ import unicode_literals
  
  # Allow direct execution
  import os
  import sys
  import unittest
  sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
  
  from yt_dlp.aes import aes_decrypt, aes_encrypt, aes_cbc_decrypt, aes_cbc_encrypt, aes_decrypt_text
  from yt_dlp.utils import bytes_to_intlist, intlist_to_bytes
  import base64
  
  # the encrypted data can be generate with 'devscripts/generate_aes_testdata.py'
  
  
  class TestAES(unittest.TestCase):
      def setUp(self):
          self.key = self.iv = [0x20, 0x15] + 14 * [0]
          self.secret_msg = b'Secret message goes here'
  
      def test_encrypt(self):
          msg = b'message'
          key = list(range(16))
          encrypted = aes_encrypt(bytes_to_intlist(msg), key)
          decrypted = intlist_to_bytes(aes_decrypt(encrypted, key))
          self.assertEqual(decrypted, msg)
  
      def test_cbc_decrypt(self):
          data = bytes_to_intlist(
              b"\x97\x92+\xe5\x0b\xc3\x18\x91ky9m&\xb3\xb5@\xe6'\xc2\x96.\xc8u\x88\xab9-[\x9e|\xf1\xcd"
          )
          decrypted = intlist_to_bytes(aes_cbc_decrypt(data, self.key, self.iv))
          self.assertEqual(decrypted.rstrip(b'\x08'), self.secret_msg)
  
      def test_cbc_encrypt(self):
          data = bytes_to_intlist(self.secret_msg)
          encrypted = intlist_to_bytes(aes_cbc_encrypt(data, self.key, self.iv))
          self.assertEqual(
              encrypted,
              b"\x97\x92+\xe5\x0b\xc3\x18\x91ky9m&\xb3\xb5@\xe6'\xc2\x96.\xc8u\x88\xab9-[\x9e|\xf1\xcd")
  
      def test_decrypt_text(self):
          password = intlist_to_bytes(self.key).decode('utf-8')
          encrypted = base64.b64encode(
              intlist_to_bytes(self.iv[:8])
              + b'\x17\x15\x93\xab\x8d\x80V\xcdV\xe0\t\xcdo\xc2\xa5\xd8ksM\r\xe27N\xae'
          ).decode('utf-8')
          decrypted = (aes_decrypt_text(encrypted, password, 16))
          self.assertEqual(decrypted, self.secret_msg)
  
          password = intlist_to_bytes(self.key).decode('utf-8')
          encrypted = base64.b64encode(
              intlist_to_bytes(self.iv[:8])
              + b'\x0b\xe6\xa4\xd9z\x0e\xb8\xb9\xd0\xd4i_\x85\x1d\x99\x98_\xe5\x80\xe7.\xbf\xa5\x83'
          ).decode('utf-8')
          decrypted = (aes_decrypt_text(encrypted, password, 32))
          self.assertEqual(decrypted, self.secret_msg)
  
  
  if __name__ == '__main__':
      unittest.main()
  