Adding test for file_format kwarg

Author: bsipocz

astroquery/ipac/ned/tests/test_ned.py

@@ -141,7 +141,7 @@ def test_photometry(patch_get):
 
 def test_extract_image_urls():
     html_in = open(data_path(DATA_FILES['extract_urls']), 'r').read()
-    url_list = ned.core.Ned.extract_image_urls(html_in)
+    url_list = ned.core.Ned._extract_image_urls(html_in)
     assert len(url_list) == 5
     for url in url_list:
         assert url.endswith('fits.gz')

astroquery/ipac/ned/tests/test_ned_remote.py

@@ -93,3 +93,11 @@ def test_get_object_notes_async(self):
     def test_get_object_notes(self):
         result = ned.core.Ned.get_table('3c 273', table='object_notes')
         assert isinstance(result, Table)
+
+    def test_file_format(self):
+        result_ascii = ned.core.Ned.get_image_list('NGC6060', item='spectra',
+                                                   file_format='NED-ascii')
+        result_fits = ned.core.Ned.get_image_list('NGC6060', item='spectra',
+                                                  file_format='fits')
+        assert len(result_ascii) == 3
+        assert len(result_fits) == 1