changelog entry

fix obvious typo

remove unused import

apparently I had comment row 0 wrong?

add some comments in case the remote test fails for good reason in the future [ci skip]

Author: keflavich

CHANGES.rst

@@ -81,6 +81,11 @@ casda
 - Use the standard ``login`` method for authenticating, which supports the system
   keyring [#2386]
 
+heasarc
+^^^^^^^
+
+- Fix issue 2560 in which blank tables raised exceptions [#2624]
+
 ipac.nexsci.nasa_exoplanet_archive
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 

astroquery/heasarc/tests/test_heasarc_remote.py

@@ -2,7 +2,6 @@
 
 import pytest
 import requests
-import warnings
 
 from ...heasarc import Heasarc
 
@@ -109,11 +108,16 @@ def test_query_region_nohits(self):
         """
         heasarc = Heasarc()
 
-        with warnings.catch_warnings(record=True) as warn:
         with pytest.warns(NoResultsWarning, match='No matching rows were found in the query.'):
+            # This was an example coordinate that returned nothing
+            # Since Fermi is still active, it is possible that sometime in the
+            # future an event will occur here.
             table = heasarc.query_region(
                     SkyCoord(0.28136*u.deg, -0.09789*u.deg, frame='fk5'),
                     mission='fermilpsc', radius=0.1*u.deg)
 
         assert len(table) == 0
-        assert 'heasarc_fermigbrst' in table.meta['COMMENT'][0]
+        # this is to check that the header comments got parsed correctly
+        # I'm not certain that they will always be returned in the same order,
+        # so it may be necessary in the future to change this part of the test
+        assert 'heasarc_fermilpsc' in table.meta['COMMENT'][0]