new_contents: from __future__ import unicode_literals
  
  import os
  import unittest
  
  from qingstor.sdk.client.encryption_client import EncryptionClient
  
  RIGHT_OUT_KWARGS = {
      "content_type": "video",
      "x_qs_encryption_customer_algorithm": "AES256",
      "x_qs_encryption_customer_key":
      "MDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDA=",
      "x_qs_encryption_customer_key_md5": "zZ5FnqcIqUjVwvWmyog4zw=="
  }
  
  
  class TestEncryptionFileChunk(unittest.TestCase):
  
      def test_apply_encryption_headers(self):
          ec = EncryptionClient(
              "test_config", "test_client", "test_bucket", "test_zone", b"0" * 32
          )
          out_kwargs = ec.apply_encrypt_headers(content_type="video")
          self.assertEqual(out_kwargs, RIGHT_OUT_KWARGS)
  
  
  if __name__ == '__main__':
      unittest.main()
  
subject: Create test class for encryption client