old_contents: from mws.mws import calc_md5
  
  
  def test_calc_md5():
      assert calc_md5(b'mws') == b'mA5nPbh1CSx9M3dbkr3Cyg=='
  
new_contents: from mws.mws import calc_md5, calc_request_description
  
  
  def test_calc_md5():
      assert calc_md5(b'mws') == b'mA5nPbh1CSx9M3dbkr3Cyg=='
  
  
  def test_calc_request_description(access_key, account_id):
      request_description = calc_request_description({
          'AWSAccessKeyId': access_key,
          'Markets': account_id,
          'SignatureVersion': '2',
          'Timestamp': '2017-08-12T19:40:35Z',
          'Version': '2017-01-01',
          'SignatureMethod': 'HmacSHA256',
      })
      assert not request_description.startswith('&')
      assert request_description == \
          'AWSAccessKeyId=' + access_key + \
          '&Markets=' + account_id + \
          '&SignatureMethod=HmacSHA256' \
          '&SignatureVersion=2' \
          '&Timestamp=2017-08-12T19%3A40%3A35Z' \
          '&Version=2017-01-01'
  
subject: Add test for calc_request_description()