import java.io.IOException;
import java.util.List;

// 测试类：验证继承+多态效果
public class CrawlerTest {
    public static void main(String[] args) throws IOException {
        // 多态核心：父类引用指向子类对象
        BaseMovieCrawler crawler = new MovieCrawler();

        // 爬取前5部电影
        List<Movie> movies = crawler.crawl(5);

        System.out.println("\n=== 爬取结果 & 多态测试 ===");
        for (Movie movie : movies) {
            // 多态调用：同一个play()方法，不同子类表现不同行为
            movie.play();
        }

        // 单独测试两个子类的多态
        System.out.println("\n=== 子类多态单独测试 ===");
        Movie theatreMovie = new TheatreMovie("流浪地球2", 2023, 9.3, "科幻", 59.9);
        Movie animatedMovie = new AnimatedMovie("哪吒之魔童降世", 2019, 9.6, "动画", "可可豆动画");

        theatreMovie.play();
        animatedMovie.play();
    }
}