Use estimator only for vehicles with soc (#8663)

* Estimator only for vehicles with soc

* fix tests

core/loadpoint.go

@@ -734,7 +734,11 @@ func (lp *Loadpoint) setStatus(status api.ChargeStatus) {
 // remainingChargeEnergy returns missing energy amount in kWh if vehicle has a valid energy target
 func (lp *Loadpoint) remainingChargeEnergy() (float64, bool) {
 	return math.Max(0, lp.targetEnergy-lp.getChargedEnergy()/1e3),
-		(lp.vehicle == nil || lp.vehicleHasFeature(api.Offline)) && lp.targetEnergy > 0
+		lp.vehicleHasSoc() && lp.targetEnergy > 0
+}
+
+func (lp *Loadpoint) vehicleHasSoc() bool {
+	return lp.vehicle != nil && !lp.vehicleHasFeature(api.Offline)
 }
 
 // targetEnergyReached checks if target is configured and reached
@@ -1295,7 +1299,7 @@ func (lp *Loadpoint) publishSocAndRange() {
 	soc, err := lp.chargerSoc()
 
 	// guard for socEstimator removed by api
-	if lp.socEstimator == nil {
+	if lp.socEstimator == nil || !lp.vehicleHasSoc() {
 		// This is a workaround for heaters. Without vehicle, the soc estimator is not initialized.
 		// We need to check if the charger can provide soc and use it if available.
 		if err == nil {

core/loadpoint_vehicle_test.go

@@ -32,20 +32,20 @@ func TestPublishSocAndRange(t *testing.T) {
 
 	log := util.NewLogger("foo")
 	lp := &Loadpoint{
-		log:            log,
-		bus:            evbus.New(),
-		clock:          clck,
-		charger:        charger,
-		defaultVehicle: vehicle,
-		chargeMeter:    &Null{}, // silence nil panics
-		chargeRater:    &Null{}, // silence nil panics
-		chargeTimer:    &Null{}, // silence nil panics
-		socEstimator:   soc.NewEstimator(log, charger, vehicle, false),
-		sessionEnergy:  NewEnergyMetrics(),
-		MinCurrent:     minA,
-		MaxCurrent:     maxA,
-		phases:         1,
-		Mode:           api.ModeNow,
+		log:           log,
+		bus:           evbus.New(),
+		clock:         clck,
+		charger:       charger,
+		vehicle:       vehicle,
+		chargeMeter:   &Null{}, // silence nil panics
+		chargeRater:   &Null{}, // silence nil panics
+		chargeTimer:   &Null{}, // silence nil panics
+		socEstimator:  soc.NewEstimator(log, charger, vehicle, false),
+		sessionEnergy: NewEnergyMetrics(),
+		MinCurrent:    minA,
+		MaxCurrent:    maxA,
+		phases:        1,
+		Mode:          api.ModeNow,
 	}
 
 	// populate channels