Testng :使用错误码断言，这是自定义异常实例的自定义属性

// 自定义异常类
public class CustomException extends Exception {
    private int errorCode;

    public CustomException(String message, int errorCode) {
        super(message);
        this.errorCode = errorCode;
    }

    public int getErrorCode() {
        return errorCode;
    }
}

// 测试类
import org.testng.Assert;
import org.testng.annotations.Test;

public class MyTest {
    @Test
    public void testCustomException() throws CustomException {
        try {
            // 模拟抛出自定义异常
            throw new CustomException("Something went wrong", 500);
        } catch (CustomException e) {
            // 使用错误码断言验证错误码是否为预期值
            Assert.assertEquals(e.getErrorCode(), 500, "Error code mismatch");
        }
    }
}