test: adjusts test input body based on changes to google-api_core (#1588)

Adjusts the body of a specific test to adapt to some changes that come through from google-api-core.

Author: chalmerlowe

tests/unit/job/test_base.py

@@ -18,6 +18,7 @@
 
 from google.api_core import exceptions
 import google.api_core.retry
+from google.api_core.future import polling
 import mock
 import pytest
 
@@ -970,7 +971,7 @@ def test_result_default_wo_state(self):
         client = _make_client(project=self.PROJECT, connection=conn)
         job = self._make_one(self.JOB_ID, client)
 
-        self.assertIs(job.result(), job)
+        self.assertIs(job.result(retry=polling.DEFAULT_RETRY), job)
 
         begin_call = mock.call(
             method="POST",