Index: tests/test_hd_simulator.py
===================================================================
diff -u -r120e6925083c799b20143834e431bdc9f34c3687 -rf8e83b59e5f3b903abb1cb78969d858439420f59
--- tests/test_hd_simulator.py	(.../test_hd_simulator.py)	(revision 120e6925083c799b20143834e431bdc9f34c3687)
+++ tests/test_hd_simulator.py	(.../test_hd_simulator.py)	(revision f8e83b59e5f3b903abb1cb78969d858439420f59)
@@ -1,17 +1,18 @@
 ###########################################################################
 #
-# Copyright (c) 2019-2020 Diality Inc. - All Rights Reserved.
+#  Copyright (c) 2020 Diality Inc. - All Rights Reserved.
 #
-# THIS CODE MAY NOT BE COPIED OR REPRODUCED IN ANY FORM, IN PART OR IN
-# WHOLE, WITHOUT THE EXPLICIT PERMISSION OF THE COPYRIGHT OWNER.
+#  THIS CODE MAY NOT BE COPIED OR REPRODUCED IN ANY FORM, IN PART OR IN
+#  WHOLE, WITHOUT THE EXPLICIT PERMISSION OF THE COPYRIGHT OWNER.
 #
-# @file test_hd_simulator.py
+#  @file test_hd_simulator.py
 #
-# @author (last) Peter Lucia
-# @date (last) 28-Aug-2020
-# @author (original) Peter Lucia
-# @date (original) 06-Aug-2020
+#  @date 06-Aug-2020
+#  @author P. Lucia
 #
+#  @brief
+#
+#
 ############################################################################
 import sys
 sys.path.append("..")
@@ -117,16 +118,30 @@
         hd_simulator.cmd_send_priming_time_remaining(state, seconds_remaining, total_seconds)
         sleep(0.05)
 
+class StartTreatmentObserver(AbstractObserver):
+    def __init__(self):
+        self.received_response = False
 
+    def update(self, result):
+        print(result)
+        self.received_response = True
 
+def test_start_confirm_end_treatment():
+    hd_simulator = HDSimulator(log_level="PRINT_ONLY")
+    observer = StartTreatmentObserver()
+    hd_simulator.attach(observer)
+
+    while not observer.received_response:
+        sleep(0.50)
+
 if __name__ == '__main__':
     # test_clear_alarms()
     # sleep(1)
     # test_poweroff()
     # test_valid_parameters()
-    test_priming()
+    # test_priming()
+    test_start_confirm_end_treatment()
 
 
 
 
-