java/w10/TestMain.java

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

public class TestMain {
    public static void main(String[] args) {
        System.out.println("===== 测试 ArticleRepository =====");
        testRepository();

        System.out.println("\n===== 测试 AnalyzeCommand =====");
        testAnalyzeCommand();

        System.out.println("\n===== 测试防御性编程 =====");
        testDefensiveProgramming();
    }

    private static void testRepository() {
        ArticleRepository repo = new ArticleRepository();
        
        Article article1 = new Article("Java编程入门", "https://example.com/java");
        Article article2 = new Article("Python数据分析", "https://example.com/python");
        Article article3 = new Article("JavaScript高级", "https://example.com/js");
        
        // 测试添加单个文章
        repo.add(article1);
        repo.add(article2);
        System.out.println("添加2篇文章后数量: " + repo.count());
        
        // 测试添加多个文章
        repo.addAll(Arrays.asList(article3));
        System.out.println("批量添加后数量: " + repo.count());
        
        // 测试查找
        Article found = repo.findByTitle("Java编程入门");
        System.out.println("查找结果: " + (found != null ? found.getTitle() : "未找到"));
        
        // 测试获取所有文章（不可变视图）
        List<Article> all = repo.getAll();
        System.out.println("获取文章列表大小: " + all.size());
    }

    private static void testAnalyzeCommand() {
        // 创建示例文章
        List<Article> articles = new ArrayList<>();
        articles.add(new Article("Java编程入门教程", "https://example.com/java"));
        articles.add(new Article("Python数据分析实战", "https://example.com/python"));
        articles.add(new Article("JavaScript高级编程", "https://example.com/js"));
        articles.add(new Article("Spring Boot指南", "https://example.com/spring"));
        articles.add(new Article("Docker容器化部署", "https://example.com/docker"));
        
        // 创建分析器列表
        List<ArticleAnalyzer> analyzers = new ArrayList<>();
        analyzers.add(new ArticleCountAnalyzer());
        analyzers.add(new TitleLengthAnalyzer());
        
        // 创建并执行分析命令
        AnalyzeCommand command = new AnalyzeCommand(articles, analyzers);
        command.execute();
    }

    private static void testDefensiveProgramming() {
        ArticleRepository repo = new ArticleRepository();
        
        try {
            repo.add(null);
            System.out.println("ERROR: 应该抛出异常！");
        } catch (NullPointerException e) {
            System.out.println("正确: 成功捕获 null 文章异常");
        }
        
        try {
            repo.addAll(null);
            System.out.println("ERROR: 应该抛出异常！");
        } catch (NullPointerException e) {
            System.out.println("正确: 成功捕获 null 集合异常");
        }
        
        try {
            List<Article> listWithNull = new ArrayList<>();
            listWithNull.add(new Article("Test", "https://test.com"));
            listWithNull.add(null);
            repo.addAll(listWithNull);
            System.out.println("ERROR: 应该抛出异常！");
        } catch (NullPointerException e) {
            System.out.println("正确: 成功捕获集合中包含 null 异常");
        }
        
        try {
            new Article(null, "https://test.com");
            System.out.println("ERROR: 应该抛出异常！");
        } catch (IllegalArgumentException e) {
            System.out.println("正确: 成功捕获空标题异常");
        }
    }
}