always show devices even in test

src/telegram.h

@@ -204,16 +204,17 @@ class EMSbus {
 
     // checks every 30 seconds if the EMS bus is still alive
     static bool bus_connected() {
-#ifndef EMSESP_STANDALONE
+#if defined(EMSESP_STANDALONE) || defined(EMSESP_TEST)
+        return true;
+#else
         if ((uuid::get_uptime() - last_bus_activity_) > EMS_BUS_TIMEOUT) {
             bus_connected_ = false;
         }
         return bus_connected_;
-#else
-        return true;
 #endif
     }
 
+
     // sets the flag for EMS bus connected
     static void last_bus_activity(uint32_t timestamp) {
         // record the first time we connected to the BUS, as this will be our uptime