Fix test; failed download now raises Exception

csppfetch/test.py

@@ -593,9 +593,10 @@ class DownloaderTests(DTestCase):
         test_datetime = datetime.datetime(2000,1,1,12,0,0)
         outfile = "avhrr-only-v2.19990101.nc"
         with TemporaryDirectory() as dirpath:
-            with self.assertLogs(level='ERROR') as logs:
-                d.download_for_time(test_datetime, dirpath,retries=1) # do_download = True, download_stats = None
-                self.assertFileDoesNotExist(dirpath+"/"+outfile)
+            with self.assertRaises(csppfetch.DownloadsFailedException) as raised:
+                with self.assertLogs(level='ERROR') as logs:
+                    d.download_for_time(test_datetime, dirpath,retries=1) # do_download = True, download_stats = None
+            self.assertFileDoesNotExist(dirpath+"/"+outfile)
         self.assertRegex(logs.output[0], r'^ERROR:root:Unable to download any file set')
         self.assertRegex(logs.output[1], r'HTTP Error 404')