Oven watcher time hard coded, added test json

lib/oven.py

@@ -573,7 +573,7 @@ class SimulatedOven(Oven):
         if heat_on > 0:
             self.heat = heat_on
 
-        log.info("simulation: -> %dW heater: %.0f -> %dW oven: %.0f -> %dW env"            % (int(self.p_heat * pid),
+        log.info("simulation: -> %dW heater: %.0f -> %dW oven: %.0f -> %dW env" % (int(self.p_heat * pid),
             self.t_h,
             int(self.p_ho),
             self.t,

lib/ovenWatcher.py

@@ -35,10 +35,8 @@ class OvenWatcher(threading.Thread):
                 self.recording = False
             self.notify_all(oven_state)
 
+            time.sleep(0.5)
 
-            time.sleep(self.oven.time_step)
-
-   
     def lastlog_subset(self,maxpts=50):
         '''send about maxpts from lastlog by skipping unwanted data'''
         totalpts = len(self.last_log)