SSB-47: Rename function to fit purpose

CAL/CalibrationCommon/test/t_holography_dataset_class2.py

@@ -13,12 +13,12 @@ logger = logging.getLogger('t_holography_dataset_class')
 path_to_test_data = '/var/tmp/holography'
 
 
-def _does_test_data_exist():
+def _is_test_data_missing():
     return not os.path.exists(path_to_test_data)
 
 
 class TestHolographyDatasetClass(unittest.TestCase):
-    @unittest.skipIf(_does_test_data_exist(), 'test data is missing please check documentation')
+    @unittest.skipIf(_is_test_data_missing(), 'test data is missing please check documentation')
     def test_create_hdf5_and_read_it_in(self):
         '''
         Reads a Measurement Set from a file and converts it to an HDS.