Index: tests/test_flush.py
===================================================================
diff -u -re193e10da7d6c16158592c1aae7ebe1221dd0cde -rc1ce5d861b5d1a9ba0e6c949401468e4139d828e
--- tests/test_flush.py	(.../test_flush.py)	(revision e193e10da7d6c16158592c1aae7ebe1221dd0cde)
+++ tests/test_flush.py	(.../test_flush.py)	(revision c1ce5d861b5d1a9ba0e6c949401468e4139d828e)
@@ -36,6 +36,7 @@
             .format(dg.flush.flush_state, dg.flush.overall_elapsed_time, dg.flush.state_elapsed_time,
                     dg.flush.flush_drain_line_volume_l, hd.alarms.alarm_top))
 
+    return info
 
 def get_concentrate_pumps_info():