My bad, 'process' does take a channel, though it's not used.

Author: David-Hari

src/ant/plus/plus.py

@@ -106,7 +106,7 @@ def wrapDifference(self, current, previous, max):
             difference = current - previous
         return difference
 
-    def process(self, msg):
+    def process(self, msg, channel):
         """Handles incoming channel messages
         Converts messages to ANT+ device specific data.
         """

tests/ant/plus/fakes.py

@@ -86,10 +86,10 @@ def set_running(self, running):
     running = property(lambda self: self._running,
                        set_running)
 
-    def reset(self):
+    def reset(self, wait=True):
         pass
 
-    def start(self):
+    def start(self, wait=True):
         self.running = True
 
     def stop(self):

tests/ant/plus/test_heartrate.py

@@ -198,6 +198,7 @@ def callback(device, id):
 
         hr.channel.process(ChannelIDMessage(0, 23358, 120, 1))
 
+        self.assertIsNotNone(channelId)
         self.assertEqual(23358, channelId.deviceNumber)
         self.assertEqual(120, channelId.deviceType)
         self.assertEqual(1, channelId.transmissionType)