SW-43: add test to check if the ATTRIBUTES are supported in reading and storing files

CAL/CalibrationCommon/test/t_holography_dataset_class.py

@@ -35,7 +35,7 @@ class TestHolographyDatasetClass(unittest.TestCase):
         self.assertEqual(holography_dataset.source_name, '3C 147')
 
     def test_store_and_read_from_hdf(self):
-        test_dict = dict(CS001=dict(BEAM0=1, BEAM1=2, BEAM3=dict(FR1='str2')), CS003='str')
+        test_dict = dict(CS001=dict(BEAM0=1, BEAM1=2, BEAM3=dict(FR1='str2'), ATTRIBUTES=dict(a=1)), CS003='str')
 
         with tempfile.NamedTemporaryFile(suffix='.hdf5') as tfile:
             tfile.close()