https://playwright.dev/docs/running-tests

创建项目：

yarn create playwright

运行：

yarn playwright test（运行端到端测试。）
  yarn playwright test --project=chromium（仅在桌面Chrome上运行测试。）
  yarn playwright test example（在特定文件中运行测试。）
  yarn playwright test --debug（在调试模式下运行测试。）
  yarn playwright codegen（使用Codegen自动生成测试。）
✔ Success! Created a Playwright Test project at /workspace/test_playwright
Inside that directory, you can run several commands:
  yarn playwright test
    Runs the end-to-end tests.
  yarn playwright test --project=chromium
    Runs the tests only on Desktop Chrome.
  yarn playwright test example
    Runs the tests in a specific file.
  yarn playwright test --debug
    Runs the tests in debug mode.
  yarn playwright codegen
    Auto generate tests with Codegen.
We suggest that you begin by typing:
    yarn playwright test
And check out the following files:
  - ./tests/example.spec.ts - Example end-to-end test
  - ./tests-examples/demo-todo-app.spec.ts - Demo Todo App end-to-end tests
  - ./playwright.config.ts - Playwright Test configuration Visit https://playwright.dev/docs/intro for more information. ✨ Happy hacking! 🎭
Done in 29.67s.

抓取内容（方法）：https://playwright.bootcss.com/docs/assertions

const content = await page.textContent('nav:first-child');
expect(content).toBe('home');

修改内容：（更换URL等）（tests/example.spec.ts）

import { test, expect } from '@playwright/test';
test('get page content', async ({ page }) => {
  //await page.goto('https://playwright.dev/');
  await page.goto('https://www.museumsusa.org/museums/?k=1271407%2cCategoryID%3a200050%3bState%3aCA%3bDirectoryID%3a200454#top');
nbsp; // Expect a title "to contain" a substring.
  //await expect(page).toHaveTitle(/Playwright/);
nbsp; const content = await page.textContent('.itemGroup');
  console.log(content)
//  expect(content).toBe('home');
  // create a locator
  const getStarted = page.locator('text= Adobe Art Gallery');
nbsp; // Expect an attribute "to be strictly equal" to the value.
  //await expect(getStarted).toHaveAttribute('href', '/docs/intro');
nbsp; // Click the get started link.
  await getStarted.click();
  // Expects the URL to contain intro.
  //await expect(page).toHaveURL(/.*intro/);
});

运行：yarn playwright test

会把div的class内容进行打印。