Note why '_JobConfig.from_api_repr' is not tested directly.

tseaver · tseaver · commit 515a0f57dad1 · 2018-07-19T11:19:33.000-04:00
diff --git a/bigquery/tests/unit/test_job.py b/bigquery/tests/unit/test_job.py
@@ -913,6 +913,9 @@ def test_to_api_repr(self):
         self.assertEqual(found, expected)
         self.assertIsNot(found, expected)  # copied
 
+    # 'from_api_repr' cannot be tested on '_JobConfig', because it presumes
+    # the ctor can be called w/o arguments
+
 
 class _Base(object):
     from google.cloud.bigquery.dataset import DatasetReference
