new_contents: import httpretty
  
  from paystackapi.tests.base_test_case import BaseTestCase
  from paystackapi.tcontrol import TransferControl
  
  
  class TestTransfer(BaseTestCase):
  
      @httpretty.activate
      def test_check_balance(self):
          """Method defined to test check_balance."""
          httpretty.register_uri(
              httpretty.GET,
              self.endpoint_url("/balance"),
              content_type='text/json',
              body='{"status": true, "message": "Balances retrieved"}',
              status=201,
          )
  
          response = TransferControl.check_balance()
          self.assertTrue(response['status'])
  
subject: Add test for transfer control check balance