java - Java自定义异常错误未报告的异常

嗨，我在针对异常引发功能运行junit测试时遇到了一些问题，

我有一个自定义的例外：

package rental;
public class UnknownVehicleException extends Exception{
    public UnknownVehicleException(){
      System.out.println("Vehicule not found in agency");
    }
}

这是RentalAgency类的基础：

public class RentalAgency {
    // vehicles of this agency
    private List<Vehicle> theVehicles;

    // maps client and rented vehicle (at most one vehicle by client)
    private Map<Client,Vehicle> rentedVehicles;

    public RentalAgency(List<Vehicle> theVehicles, Map<Client,Vehicle> rentedVehicles) {
      this.theVehicles = theVehicles;
      this.rentedVehicles = rentedVehicles;
    }

这个函数应该在某些情况下引发此异常：

/** client rents a vehicle
    * @param client the renter
    * @param v the rented vehicle
    * @return the daily rental price
    * @exception UnknownVehicleException   if v is not a vehicle of this agency
    * @exception IllegalStateException if v is already rented or client rents already another vehicle
    */
    public float rentVehicle(Client client, Vehicle v) throws UnknownVehicleException, IllegalStateException {
      if(! this.theVehicles.contains(v)){
        throw new UnknownVehicleException();
      }
      if(this.hasRentedAVehicle(client) || this.isRented(v)){
        throw new IllegalStateException("Client is already renting a vehicle or the vehicle is already being rented");
      }
      else{
        this.rentedVehicles.put(client, v);
        return v.getDailyPrice();
      }
    }

所以现在所有这些，我正在尝试运行此测试：

@Test (expected = UnknownVehicleException.class)
public void testRentVehicleIfVehicleNotInAgency(){
  this.renault.rentVehicle(this.client1, this.clio);
}

这给了我


  未报告的异常UnknownVehicleException;必须被抓住或
  宣布被抛出


我不知道我在哪里搞砸了

任何帮助表示赞赏，并随时要求我的代码更多详细信息

最佳答案

您的测试方法不会引发或捕获异常。您期望出现异常，但实际上并不抛出异常。

@Test (expected = UnknownVehicleException.class)
public void testRentVehicleIfVehicleNotInAgency() throws UnknownVehicleException {
    this.renault.rentVehicle(this.client1, this.clio);
}

关于java - Java自定义异常错误未报告的异常，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/49719059/