--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/py/sensor_test.py	Sat Jul 06 18:29:45 2019 +0800
@@ -0,0 +1,34 @@
+import asyncio
+
+class SensorTest(object):
+
+    def __init__(self, server):
+        self.server = server
+        
+    def kill(self):
+        L("Killed SensorTest")
+
+    def make_vals(self):
+        def try_read(f, fallback):
+            try:
+                return float(open(f, 'r').read())
+            except Exception as e:
+                return fallback
+
+        vals = {}
+        vals[self.wort_name()] = try_read('test_wort.txt', 18)
+        vals[self.fridge_name()] = try_read('test_fridge.txt', 20)
+        vals['ambient'] = 31.2
+        return vals
+
+    def run(self):
+        while True:
+            yield from asyncio.sleep(1)
+            vals = self.make_vals()
+            self.server.add_reading(vals)
+
+    def wort_name(self):
+        return '28-wortname'
+
+    def fridge_name(self):
+        return '28-fridgename'