### Question:
LiftTruck extends AbstractCustomer implements CustomerModelAccessor { public LiftTruck () { super(); } LiftTruck();  LiftTruck(String name); @Override void initialize(); @Override CustomerInfo getCustomerInfo(); @Override void step(); @Override String getName(); @Override void setName(String name); @ConfigurableValue(valueType = "Double", dump = false, description = "mean power usage when truck is in use") @StateChange void setTruckKW(double value); double getTruckKW(); @ConfigurableValue(valueType = "Double", dump = false, description = "Std dev of truck power usage") @StateChange void setTruckStd(double stdDev); double getTruckStd(); @ConfigurableValue(valueType = "List", dump = false, description = "shift spec [block, shift, ..., block, shift, ...]") void setShiftData(List<String> data); List<String> getShiftData(); @ConfigurableValue(valueType = "Double", dump = false, description = "size of battery pack in kWh") @StateChange void setBatteryCapacity(double value); double getBatteryCapacity(); @ConfigurableValue(valueType = "Integer", dump = false, description = "total number of battery packs") @StateChange void setNBatteries(int value); int getNBatteries(); @ConfigurableValue(valueType = "Integer", dump = false, description = "number of battery chargers") @StateChange void setNChargers(int value); int getNChargers(); @ConfigurableValue(valueType = "Double", dump = false, description = "maximum charge rate of one truck's battery pack") @StateChange void setMaxChargeKW(double value); double getMaxChargeKW(); @ConfigurableValue(valueType = "Double", dump = false, description = "ratio of charge energy to battery energy") @StateChange void setChargeEfficiency(double value); double getChargeEfficiency(); @ConfigurableValue(valueType = "Integer", dump = false, description = "planning horizon in timeslots - should be at least 48") @StateChange void setPlanningHorizon(int horizon); int getPlanningHorizon(); @ConfigurableValue(valueType = "Integer", dump = false, description = "minimum useful horizon of existing plan") @StateChange void setMinPlanningHorizon(int horizon); int getMinPlanningHorizon(); @StateChange void setEnergyCharging(double kwh); double getEnergyCharging(); void addEnergyCharging(double kwh); @StateChange void setEnergyInUse(double kwh); double getEnergyInUse(); void addEnergyInUse(double kwh); @StateChange void setCapacityInUse(double kwh); double getCapacityInUse(); @Override CapacityProfile getCapacityProfile(Tariff tariff); @Override double getBrokerSwitchFactor(boolean isSuperseding); @Override double getTariffChoiceSample(); @Override double getInertiaSample(); @Override void evaluateTariffs(List<Tariff> tariffs); @Override double getShiftingInconvenienceFactor(Tariff tariff);  }### Answer:
@Test public void testLiftTruck () { LiftTruck truck = new LiftTruck("Test"); assertNotNull(truck, "constructed"); assertEquals(8, truck.getNChargers(), "1 trucks 2nd shift"); }