feat: 增加测试覆盖率并优化代码质量

test: 添加单元测试和端到端测试
refactor: 重构登录页面和上传模块
ci: 更新测试覆盖率阈值至42%
build: 添加测试相关依赖
docs: 更新测试文档
style: 修复代码格式问题

src/app/(marketing)/services/page.test.tsx

@@ -0,0 +1,141 @@
+import { describe, it, expect, jest, beforeAll } from '@jest/globals';
+import { render, screen } from '@testing-library/react';
+import '@testing-library/jest-dom';
+
+jest.mock('framer-motion', () => ({
+  motion: {
+    div: ({ children, className, ...props }: any) => (
+      <div className={className} {...props}>
+        {children}
+      </div>
+    ),
+    section: ({ children, className, ...props }: any) => (
+      <section className={className} {...props}>
+        {children}
+      </section>
+    ),
+  },
+  AnimatePresence: ({ children }: any) => <>{children}</>,
+  useInView: () => [null, true],
+}));
+
+jest.mock('next/link', () => {
+  return ({ children, href, ...props }: any) => (
+    <a href={href} {...props}>
+      {children}
+    </a>
+  );
+});
+
+jest.mock('lucide-react', () => ({
+  ArrowRight: () => <span data-testid="arrow-right-icon" />,
+  ArrowLeft: () => <span data-testid="arrow-left-icon" />,
+  Code: () => <span data-testid="code-icon" />,
+  Cloud: () => <span data-testid="cloud-icon" />,
+  BarChart3: () => <span data-testid="bar-chart-icon" />,
+  Shield: () => <span data-testid="shield-icon" />,
+}));
+
+jest.mock('@/components/ui/button', () => ({
+  Button: ({ children, className, ...props }: any) => (
+    <button className={className} {...props}>
+      {children}
+    </button>
+  ),
+}));
+
+jest.mock('@/components/ui/badge', () => ({
+  Badge: ({ children, className, ...props }: any) => (
+    <span className={className} {...props}>
+      {children}
+    </span>
+  ),
+}));
+
+jest.mock('@/components/ui/loading-skeleton', () => ({
+  ServiceCardSkeleton: () => <div data-testid="service-card-skeleton">Loading...</div>,
+}));
+
+jest.mock('@/components/ui/page-header', () => ({
+  PageHeader: ({ title, description }: any) => (
+    <header>
+      <h1>{title}</h1>
+      <p>{description}</p>
+    </header>
+  ),
+}));
+
+jest.mock('@/lib/constants', () => ({
+  SERVICES: [
+    {
+      id: 'software-dev',
+      title: '软件开发',
+      icon: 'Code',
+      description: '定制化软件开发服务',
+      features: ['需求分析', '架构设计', '开发测试', '运维支持'],
+    },
+    {
+      id: 'cloud-service',
+      title: '云服务',
+      icon: 'Cloud',
+      description: '企业云服务解决方案',
+      features: ['云迁移', '云原生', '云安全', '云运维'],
+    },
+  ],
+}));
+
+import ServicesPage from './page';
+
+describe('ServicesPage', () => {
+  beforeEach(() => {
+    jest.clearAllMocks();
+  });
+
+  describe('Rendering', () => {
+    it('should render services page', () => {
+      const { container } = render(<ServicesPage />);
+      const pageContainer = container.querySelector('.min-h-screen');
+      expect(pageContainer).toBeInTheDocument();
+    });
+
+    it('should render page header', () => {
+      render(<ServicesPage />);
+      const title = screen.getByText(/核心业务/i);
+      expect(title).toBeInTheDocument();
+    });
+
+    it('should render back to home link', () => {
+      render(<ServicesPage />);
+      const backLink = screen.getByText(/返回首页/i);
+      expect(backLink).toBeInTheDocument();
+    });
+
+    it('should render loading skeletons initially', () => {
+      render(<ServicesPage />);
+      const skeletons = screen.getAllByTestId('service-card-skeleton');
+      expect(skeletons.length).toBe(4);
+    });
+
+    it('should render CTA section', () => {
+      render(<ServicesPage />);
+      const cta = screen.getByText(/准备开始您的数字化转型之旅/i);
+      expect(cta).toBeInTheDocument();
+    });
+  });
+
+  describe('Navigation', () => {
+    it('should have contact link', () => {
+      render(<ServicesPage />);
+      const contactLink = screen.getByRole('link', { name: /立即咨询/i });
+      expect(contactLink).toHaveAttribute('href', '/contact');
+    });
+  });
+
+  describe('Accessibility', () => {
+    it('should have proper heading hierarchy', () => {
+      render(<ServicesPage />);
+      const h1 = screen.getByRole('heading', { level: 1 });
+      expect(h1).toBeInTheDocument();
+    });
+  });
+});