autotest: add test for receiving base messages

Tools/autotest/antennatracker.py

@@ -162,6 +162,13 @@ class AutoTestTracker(vehicle_test_suite.TestSuite):
                                           timeout=90,
                                           comparator=operator.le)
 
+    def BaseMessageSet(self):
+        '''ensure we're getting messages we expect'''
+        self.set_parameter('BATT_MONITOR', 4)
+        self.reboot_sitl()
+        for msg in 'BATTERY_STATUS', :
+            self.assert_receive_message(msg)
+
     def disabled_tests(self):
         return {
             "ArmFeatures": "See https://github.com/ArduPilot/ardupilot/issues/10652",
@@ -178,5 +185,6 @@ class AutoTestTracker(vehicle_test_suite.TestSuite):
             self.MAV_CMD_MISSION_START,
             self.NMEAOutput,
             self.SCAN,
+            self.BaseMessageSet,
         ])
         return ret