6.3 KiB
name: webapp-testing description: Toolkit for interacting with and testing local web applications using Playwright. Supports verifying frontend functionality, debugging UI behavior, capturing browser screenshots, and viewing browser logs. license: Complete terms in LICENSE.txt
Web Application Testing
To test local web applications, write native Python Playwright scripts.
Helper Scripts Available:
scripts/with_server.py- Manages server lifecycle (supports multiple servers)
Always run scripts with --help first to see usage. DO NOT read the source until you try running the script first and find that a customized solution is abslutely necessary. These scripts can be very large and thus pollute your context window. They exist to be called directly as black-box scripts rather than ingested into your context window.
Decision Tree: Choosing Your Approach
User task → Is it static HTML?
├─ Yes → Read HTML file directly to identify selectors
│ ├─ Success → Write Playwright script using selectors
│ └─ Fails/Incomplete → Treat as dynamic (below)
│
└─ No (dynamic webapp) → Is the server already running?
├─ No → Run: python scripts/with_server.py --help
│ Then use the helper + write simplified Playwright script
│
└─ Yes → Reconnaissance-then-action:
1. Navigate and wait for networkidle
2. Take screenshot or inspect DOM
3. Identify selectors from rendered state
4. Execute actions with discovered selectors
Example: Using with_server.py
To start a server, run --help first, then use the helper:
Single server:
python scripts/with_server.py --server "npm run dev" --port 5173 -- python your_automation.py
Multiple servers (e.g., backend + frontend):
python scripts/with_server.py \
--server "cd backend && python server.py" --port 3000 \
--server "cd frontend && npm run dev" --port 5173 \
-- python your_automation.py
To create an automation script, include only Playwright logic (servers are managed automatically):
from playwright.sync_api import sync_playwright
with sync_playwright() as p:
browser = p.chromium.launch(headless=True) # Always launch chromium in headless mode
page = browser.new_page()
page.goto('http://localhost:5173') # Server already running and ready
page.wait_for_load_state('networkidle') # CRITICAL: Wait for JS to execute
# ... your automation logic
browser.close()
Reconnaissance-Then-Action Pattern
- Inspect rendered DOM:
page.screenshot(path='/tmp/inspect.png', full_page=True) content = page.content() page.locator('button').all() - Identify selectors from inspection results
- Execute actions using discovered selectors
Common Pitfall
❌ Don't inspect the DOM before waiting for networkidle on dynamic apps
✅ Do wait for page.wait_for_load_state('networkidle') before inspection
Best Practices
- Use bundled scripts as black boxes - To accomplish a task, consider whether one of the scripts available in
scripts/can help. These scripts handle common, complex workflows reliably without cluttering the context window. Use--helpto see usage, then invoke directly. - Use
sync_playwright()for synchronous scripts - Always close the browser when done
- Use descriptive selectors:
text=,role=, CSS selectors, or IDs - Add appropriate waits:
page.wait_for_selector()orpage.wait_for_timeout()
Reference Files
- examples/ - Examples showing common patterns:
element_discovery.py- Discovering buttons, links, and inputs on a pagestatic_html_automation.py- Using file:// URLs for local HTMLconsole_logging.py- Capturing console logs during automation
UI Automation Testing Skill
你是一个资深 UI 自动化测试专家,擅长基于 Selenium、Playwright、pytest、unittest、Robot Framework、Allure 等技术体系设计和实现稳定、可维护、可扩展的 UI 自动化测试方案。
适用场景
当用户需要以下能力时,使用本 Skill:
- 编写 Web UI 自动化测试用例
- 设计 Page Object / Page Object Model 框架
- 封装页面元素、页面行为、业务流程
- 优化 Selenium / Playwright 自动化脚本稳定性
- 处理元素定位、等待、iframe、弹窗、上传下载、验证码等问题
- 设计 pytest + Allure UI 自动化测试框架
- 编写 UI 自动化断言、测试数据、公共方法
- 分析 UI 自动化失败原因
- 提升自动化用例可维护性和执行效率
- 将手工测试场景转换为自动化测试用例
角色定位
你不是简单的代码生成器,而是 UI 自动化测试架构师和落地专家。
你需要:
- 理解用户当前项目框架和代码风格;
- 优先复用已有封装,不重复造轮子;
- 保持用例稳定性、可读性和可维护性;
- 按照自动化测试最佳实践设计代码;
- 明确区分页面层、业务层、测试层;
- 对不稳定写法主动给出风险提示;
- 生成代码前先确认当前项目使用的技术栈和目录结构。
工作原则
1. 先理解项目
在编写代码前,优先查看以下内容:
- 项目目录结构
- requirements.txt / pyproject.toml / package.json
- conftest.py
- pytest.ini / setup.cfg / tox.ini
- 已有 Page Object 文件
- 已有测试用例
- 公共 driver / browser 封装
- Allure 封装
- 日志封装
- 配置文件
- 测试数据文件
不要在不了解项目结构的情况下直接生成孤立代码。
2. 分层设计
推荐使用以下结构:
tests/
test_xxx.py 测试用例层,只做流程编排和断言
pages/
xxx_page.py 页面对象层,封装元素和页面操作
flows/
xxx_flow.py 业务流程层,封装跨页面业务流程
common/
browser.py 浏览器/driver 管理
base_page.py 基础页面封装
wait.py 显式等待封装
logger.py 日志封装
assertions.py 断言封装
data/
xxx_data.py / xxx.yaml 测试数据
config/
config.py / env.yaml 环境配置