Playwright

Playwright 是一个测试框架,它允许你使用单一的 API,自动的在 Chromium、Firefox 和 WebKit 环境中运行测试用例,你可以使用它来编写 E2E 测试

在 Modern.js 中使用 Playwright 需要先安装依赖,可以执行以下命令:

npm
yarn
pnpm
npm init playwright

上述命令会自动安装 Playwright 依赖,并通过一系列提示帮助你在项目中安装和配置,包括添加一个 playwright.config.ts 文件。

INFO

参考 Playwright 官方文档,安装 Playwright 查阅更详细的指南。

按照默认配置创建后,可以在项目中看到以下文件:

tests/example.spec.ts
import { test, expect } from '@playwright/test';

test('has title', async ({ page }) => {
  await page.goto('https://playwright.dev/');

  // Expect a title "to contain" a substring.
  await expect(page).toHaveTitle(/Playwright/);
});

test('get started link', async ({ page }) => {
  await page.goto('https://playwright.dev/');

  // Click the get started link.
  await page.getByRole('link', { name: 'Get started' }).click();

  // Expects page to have a heading with the name of Installation.
  await expect(
    page.getByRole('heading', { name: 'Installation' }),
  ).toBeVisible();
});

这是默认的测试文件,现在创建一些新的页面,并测试它们。

创建 E2E 测试

首先创建两张 Modern.js 的页面。

routes/page.tsx
import { Link } from '@modern-js/runtime/router';

const Index = () => (
  <div>
    <h1>Home</h1>
    <Link to="/about">About</Link>
  </div>
);

export default Index;
routes/about/page.tsx
import { Link } from '@modern-js/runtime/router';

const Index = () => (
  <div>
    <h1>About</h1>
    <Link to="/">Home</Link>
  </div>
);

export default Index;

接下来,添加测试用例,来保证你页面的链接能够正常工作。

tests/example.spec.ts
import { test, expect } from '@playwright/test'
 
test('should navigate to the about page', async ({ page }) => {
  // Start from the index page (the baseURL is set via the webServer in the playwright.config.ts)
  await page.goto('http://localhost:8080/')
  // Find an element with the text 'About' and click on it
  await page.click('text=About')
  // The new URL should be "/about" (baseURL is used there)
  await expect(page).toHaveURL('http://localhost:8080/about')
  // The new page should contain an h1 with "About"
  await expect(page.locator('h1')).toContainText('About')
})

运行测试用例

Playwright 需要你的 Modern.js 服务器保持运行。我们推荐在生产环境产物下运行你的测试用例,你可以执行 pnpm run buildpnpm run serve 在本地模拟生产环境。

info    Starting production server...

  > Local:    http://localhost:8080/
  > Network:  http://10.94.59.30:8080/

当项目正常构建运行后,可以在另一个终端内执行 npx playwright test,运行 Playwright 用例:

Running 3 tests using 3 workers
  3 passed (2.0s)

To open last HTML report run:

  npx playwright show-report