def test_endpoint_headers(self, requests_mock):
   headers = {'header_name': 'header_value'}
   curb_api('any_endpoint', headers)
   requests_mock.get.assert_called_once_with(
     'http://challenge.shopcurbside.com/any_endpoint',
     headers = headers
   )
 def test_endpoint(self, requests_):
   curb_api('any_endpoint')
   curbside_challenge.requests.get.assert_called_once_with(
     'http://challenge.shopcurbside.com/any_endpoint',
     headers = {}
   )