Playwright
是一个用于自动化浏览器的测试框架,支持多种浏览器,包括 Chromium、Firefox 和 WebKit。在使用 Playwright 进行测试时,可能需要安装特定的浏览器,例如 Chrome。
如何安装Playwright Chrome
在使用 Playwright 时,可以通过以下步骤来安装 Chromium(Chrome 的开源版本):
- 1 安装 Playwright
首先,如果你还没有安装 Playwright,可以通过 npm 或 pip 在 Node.js 或 Python 环境中安装它。
- 对于 Node.js:
npm install playwright
- 对于 Python:
pip install playwright
- 2 安装浏览器
一旦 Playwright 安装完成,你可以使用以下命令安装 Chromium(Chrome 的一个分支)以及其他支持的浏览器(如果需要)。
npx playwright install
或者,如果你只想安装特定浏览器(比如 Chromium),可以执行:
npx playwright install chromium
运行测试
安装完成后,你可以开始编写和运行 Playwright 测试。以下是一个使用 Chromium 的简单示例:
const { chromium } = require('playwright');(async () => {// 启动浏览器const browser = await chromium.launch();const page = await browser.newPage();// 访问网站await page.goto('https://example.com');// 截图await page.screenshot({ path: 'example.png' });// 关闭浏览器await browser.close();
})();
将代码保存到example.js文件中,然后执行
node example.js
按照代码,在当前目录生成了一副图片
2025/03/27 13:45 17,117 example.png
调试通过
其他信息
- 其他浏览器:除了 Chromium,Playwright 还支持 Firefox 和 WebKit(Safari 的引擎),可以通过相似的方式安装。
- Headless 模式:Playwright 可以在无头模式下运行,即不显示浏览器界面的情况下执行测试。你可以使用
headless: true
属性来启用这个特性。
const browser = await chromium.launch({ headless: true });
Copy
总结
playwright install chrome
是用于安装 Chrome(具体来说是 Chromium)浏览器的过程的一部分。通过 Playwright,你可以方便地进行跨浏览器的自动化测试,支持多种常见的浏览器以及无头模式,极大地提高了测试的灵活性和效率。
调试
playwright test测试的时候显示没playwright
感觉需要这样执行
npx playwright test
npx playwright install
╔═══════════════════════════════════════════════════════════════════════════════╗
║ WARNING: It looks like you are running 'npx playwright install' without first ║
║ installing your project's dependencies. ║
║ ║
║ To avoid unexpected behavior, please install your dependencies first, and ║
║ then run Playwright's install command: ║
║ ║
║ npm install ║
║ npx playwright install ║
║ ║
║ If your project does not yet depend on Playwright, first install the ║
║ applicable npm package (most commonly @playwright/test), and ║
║ then run Playwright's install command to download the browsers: ║
║ ║
║ npm install @playwright/test ║
║ npx playwright install ║
║ ║
npx playwright test的时候显示没有test
这样安装
npm install @playwright/test
然后
(py311) E:\work\playwright>npx playwright test
Error: No tests found
不管怎么说,在经过这几步操作后,有playwright这个命令了
playwright
Usage: playwright [options] [command]Options:-V, --version output the version number-h, --help display help for commandCommands:open [options] [url] open page in browser specified via -b, --browsercodegen [options] [url] open page and generate code for user actionsinstall [options] [browser...] ensure browsers necessary for this version of Playwright are installeduninstall [options] Removes browsers used by this installation of Playwright from the system(chromium, firefox, webkit, ffmpeg). This does not include branded channels.install-deps [options] [browser...] install dependencies necessary to run browsers (will ask for sudo permissions)cr [options] [url] open page in Chromiumff [options] [url] open page in Firefoxwk [options] [url] open page in WebKitscreenshot [options] <url> <filename> capture a page screenshotpdf [options] <url> <filename> save page as pdfrun-server [options]show-trace [options] [trace...] show trace viewerhelp [command] display help for command
这时候再执行测试:
node example.js
哈哈,生成了一副图片呢:
2025/03/27 13:45 17,117 example.png