java/w3/CarRunner.java

package JavaLearningProject.java.w3;

public class CarRunner {
    public static void main(String[] args) {
        System.out.println("=== 汽车租赁系统测试 ===");
        System.out.println("当前系统总车辆数: " + Car.getTotalCars());
        
        System.out.println("\n--- 场景 1: 创建合法的 Car 对象 ---");
        Car car1 = new Car("京A88888", "Toyota", "Camry", 200.0);
        System.out.println("创建车辆成功: " + car1.getBrand() + " " + car1.getModel() + " (车牌: " + car1.getLicensePlate() + ")");
        System.out.println("当前系统总车辆数: " + Car.getTotalCars());

        System.out.println("\n--- 场景 2: 测试属性更新 (Setters) ---");
        car1.setBrand("Honda");
        car1.setModel("Accord");
        car1.setDailyRent(250.0);
        System.out.println("更新后车辆信息: " + car1.getBrand() + " " + car1.getModel() + ", 日租金: " + car1.calculateRent(1));

        System.out.println("\n--- 场景 3: 测试租赁逻辑 (Rent) ---");
        System.out.println("车辆当前是否已租出? " + car1.isRented());
        boolean rentResult = car1.rent();
        System.out.println("尝试租出车辆... 结果: " + (rentResult ? "成功" : "失败"));
        System.out.println("车辆当前是否已租出? " + car1.isRented());
        
        System.out.println("\n--- 场景 4: 重复租赁测试 ---");
        boolean rentResult2 = car1.rent();
        System.out.println("尝试再次租出该车辆... 结果: " + (rentResult2 ? "成功" : "失败"));

        System.out.println("\n--- 场景 5: 租金计算测试 ---");
        try {
            double rentFor5Days = car1.calculateRent(5);
            System.out.println("租用 5 天的总租金为: " + rentFor5Days);
        } catch (Exception e) {
            System.out.println("租金计算异常: " + e.getMessage());
        }

        System.out.println("\n--- 场景 6: 异常处理测试 (负数天数计算) ---");
        try {
            car1.calculateRent(-2);
        } catch (IllegalArgumentException e) {
            System.out.println("捕获预期异常: " + e.getMessage());
        }

        System.out.println("\n--- 场景 7: 异常处理测试 (创建非法车辆) ---");
        try {
            new Car("", "Ford", "Civic", 100.0);
        } catch (IllegalArgumentException e) {
            System.out.println("捕获预期异常(车牌为空): " + e.getMessage());
        }

        try {
            new Car("沪B12345", "Ford", "Civic", -50.0);
        } catch (IllegalArgumentException e) {
            System.out.println("捕获预期异常(租金为负): " + e.getMessage());
        }

        System.out.println("\n=== 测试结束 ===");
    }
}