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tdd-workflow

在编写新功能、修复错误或重构代码时使用此技能。强制执行测试驱动开发,确保单元测试、集成测试和端到端测试的覆盖率超过80%。

DeepseekModel Curated skill Quality Excellent · 90 v1.0.0

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name tdd-workflow description 在编写新功能、修复错误或重构代码时使用此技能。强制执行测试驱动开发,确保单元测试、集成测试和端到端测试的覆盖率超过80%。 origin ECC 测试驱动开发工作流 此技能确保所有代码开发遵循TDD原则,并具备全面的测试覆盖率。 何时激活 编写新功能或功能 修复错误或问题 重构现有代码 添加API端点 创建新组件 核心原则 1. 测试优先于代码 始终先编写测试,然后实现代码以使测试通过。 2. 覆盖率要求 最低80%覆盖率(单元 + 集成 + 端到端) 覆盖所有边缘情况 测试错误场景 验证边界条件 3. 测试类型 单元测试 单个函数和工具 组件逻辑 纯函数 辅助函数和工具 集成测试 API端点 数据库操作 服务交互 外部API调用 端到端测试 (Playwright) 关键用户流程 完整工作流 浏览器自动化 UI交互 TDD 工作流步骤 步骤 1: 编写用户旅程 作为一个[角色],我希望能够[行动],以便[获得收益] 示例: 作为一个用户,我希望能够进行语义搜索市场, 这样即使没有精确的关键词,我也能找到相关的市场。 步骤 2: 生成测试用例 针对每个用户旅程,创建全面的测试用例: describe ( 'Semantic Search' , () => { it ( 'returns relevant markets for query' , async () => { // Test implementation }) it ( 'handles empty query gracefully' , async () => { // Test edge case }) it ( 'falls back to substring search when Redis unavailable' , async () => { // Test fallback behavior }) it ( 'sorts results by similarity score' , async () => { // Test sorting logic }) }) 步骤 3: 运行测试(它们应该失败) npm test # Tests should fail - we haven't implemented yet 步骤 4: 实现代码 编写最少的代码以使测试通过: // Implementation guided by tests export async function searchMarkets ( query : string ) { // Implementation here } 步骤 5: 再次运行测试 npm test # Tests should now pass 步骤 6: 重构 在保持测试通过的同时提高代码质量: 消除重复 改进命名 优化性能 增强可读性 步骤 7: 验证覆盖率 npm run test :coverage # Verify 80%+ coverage achieved 测试模式 单元测试模式 (Jest/Vitest) import { render, screen, fireEvent } from '@testing-library/react' import { Button } from './Button' describe ( 'Button Component' , () => { it ( 'renders with correct text' , () => { render ( < Button > Click me </ Button > ) expect (screen. getByText ( 'Click me' )). toBeInTheDocument () }) it ( 'calls onClick when clicked' , () => { const handleClick = jest. fn () render ( < Button onClick = {handleClick} > Click </ Button > ) fireEvent. click (screen. getByRole ( 'button' )) expect (handleClick). toHaveBeenCalledTimes ( 1 ) }) it ( 'is disabled when disabled prop is true' , () => { render ( < Button disabled > Click </ Button > ) expect (screen. getByRole ( 'button' )). toBeDisabled () }) }) API 集成测试模式 import { NextRequest } from 'next/server' import { GET } from './route' describe ( 'GET /api/markets' , () => { it ( 'returns markets successfully' , async () => { const request = new NextRequest ( 'http://localhost/api/markets' ) const response = await GET (request) const data = await response. json () expect (response. status ). toBe ( 200 ) expect (data. success ). toBe ( true ) expect ( Array . isArray (data. data )). toBe ( true ) }) it ( 'validates query parameters' , async () => { const request = new NextRequest ( 'http://localhost/api/markets?limit=invalid' ) const response = await GET (request) expect (response. status ). toBe ( 400 ) }) it ( 'handles database errors gracefully' , async () => { // Mock database failure const request = new NextRequest ( 'http://localhost/api/markets' ) // Test error handling }) }) 端到端测试模式 (Playwright) import { test, expect } from '@playwright/test' test ( 'user can search and filter markets' , async ({ page }) => { // Navigate to markets page await page. goto ( '/' ) await page. click ( 'a[href="/markets"]' ) // Verify page loaded await expect (page. locator ( 'h1' )). toContainText ( 'Markets' ) // Search for markets await page. fill ( 'input[placeholder="Search markets"]' , 'election' ) // Wait for debounce and results await page. waitForTimeout ( 600 ) // Verify search results displayed const results = page. locator ( '[data-testid="market-card"]' ) await expect (results). toHaveCount ( 5 , { timeout : 5000 }) // Verify results contain search term const firstResult = results. first () await expect (firstResult). toContainText ( 'election' , { ignoreCase : true }) // Filter by status await page. click ( 'button:has-text("Active")' ) // Verify filtered results await expect (results). toHaveCount ( 3 ) }) test ( 'user can create a new market' , async ({ page }) => { // Login first await page. goto ( '/creator-dashboard' ) // Fill market creation form await page. fill ( 'input[name="name"]' , 'Test Market' ) await page. fill ( 'textarea[name="description"]' , 'Test description' ) await page. fill ( 'input[name="endDate"]' , '2025-12-31' ) // Submit form await page. click ( 'button[type="submit"]' ) // Verify success message await expect (page. locator ( 'text=Market created successfully' )). toBeVisible () // Verify redirect to market page await expect (page). toHaveURL ( /\/markets\/test-market/ ) }) 测试文件组织 src/ ├── components/ │ ├── Button/ │ │ ├── Button.tsx │ │ ├── Button.test.tsx # 单元测试 │ │ └── Button.stories.tsx # Storybook │ └── MarketCard/ │ ├── MarketCard.tsx │ └── MarketCard.test.tsx ├── app/ │ └── api/ │ └── markets/ │ ├── route.ts │ └── route.test.ts # 集成测试 └── e2e/ ├── markets.spec.ts # 端到端测试 ├── trading.spec.ts └── auth.spec.ts 模拟外部服务 Supabase 模拟 jest. mock ( '@/lib/supabase' , () => ({ supabase : { from : jest. fn ( () => ({ select : jest. fn ( () => ({ eq : jest. fn ( () => Promise . resolve ({ data : [{ id : 1 , name : 'Test Market' }], error : null })) })) })) } })) Redis 模拟 jest. mock ( '@/lib/redis' , () => ({ searchMarketsByVector : jest. fn ( () => Promise . resolve ([ { slug : 'test-market' , similarity_score : 0.95 } ])), checkRedisHealth : jest. fn ( () => Promise . resolve ({ connected : true })) })) OpenAI 模拟 jest. mock ( '@/lib/openai' , () => ({ generateEmbedding : jest. fn ( () => Promise . resolve ( new Array ( 1536 ). fill ( 0.1 ) // Mock 1536-dim embedding )) })) 测试覆盖率验证 运行覆盖率报告 npm run test :coverage 覆盖率阈值 { "jest" : { "coverageThresholds" : { "global" : { "branches" : 80 , "functions" : 80 , "lines" : 80 , "statements" : 80 } } } } 应避免的常见测试错误 FAIL: 错误:测试实现细节 // Don't test internal state expect (component. state . count ). toBe ( 5 ) PASS: 正确:测试用户可见的行为 // Test what users see expect (screen. getByText ( 'Count: 5' )). toBeInTheDocument () FAIL: 错误:脆弱的定位器 // Breaks easily await page. click ( '.css-class-xyz' ) PASS: 正确:语义化定位器 // Resilient to changes await page. click ( 'button:has-text("Submit")' ) await page. click ( '[data-testid="submit-button"]' ) FAIL: 错误:没有测试隔离 // Tests depend on each other test ( 'creates user' , () => { /* ... */ }) test ( 'updates same user' , () => { /* depends on previous test */ }) PASS: 正确:独立的测试 // Each test sets up its own data test ( 'creates user' , () => { const user = createTestUser () // Test logic }) test ( 'updates user' , () => { const user = createTestUser () // Update logic }) 持续测试 开发期间的监视模式 npm test -- --watch # Tests run automatically on file changes 预提交钩子 # Runs before every commit npm test && npm run lint CI/CD 集成 # GitHub Actions - name: Run Tests run: npm test -- --coverage - name: Upload Coverage uses: codecov/codecov-action@v3 最佳实践 先写测试 - 始终遵循TDD 每个测试一个断言 - 专注于单一行为 描述性的测试名称 - 解释测试内容 组织-执行-断言 - 清晰的测试结构 模拟外部依赖 - 隔离单元测试 测试边缘情况 - Null、undefined、空、大量数据 测试错误路径 - 不仅仅是正常路径 保持测试快速 - 单元测试每个 < 50ms 测试后清理 - 无副作用 审查覆盖率报告 - 识别空白 成功指标 达到 80%+ 代码覆盖率 所有测试通过(绿色) 没有跳过或禁用的测试 快速测试执行(单元测试 < 30秒) 端到端测试覆盖关键用户流程 测试在生产前捕获错误 记住 :测试不是可选的。它们是安全网,能够实现自信的重构、快速的开发和生产的可靠性。
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