Jest examples

These examples use Jest throughout. Start with the Jest guide for installation, your first scan and framework-specific limits. Each example shows a project's file layout; adjust its globs to your own suite. Scanning reads the source without running tests or starting a browser.

Puppeteer on Jest

Puppeteer has no test runner of its own; its end-to-end suites run on Jest through the jest-puppeteer preset, which gives the tests a page and browser, and expect(page) matchers:

// e2e/order-ticket.e2e.js
describe('order ticket', () => {
  beforeEach(async () => {
    await page.goto(`${BASE_URL}/trade/AAPL`);
  });
  // ...
  it.each([
    ['0', 'Quantity must be at least 1'],
    ['-5', 'Quantity must be at least 1'],
    ['1000001', 'Quantity is above the 1,000,000 share limit'],
  ])('rejects a quantity of %s', async (quantity, message) => {

npx test-inventory "e2e/**/*.e2e.js" --framework jest --output inventory.json

The preset only sets up the browser, so the scan reads the file as any Jest file, with no warning about it:

{
  "fullName": "order ticket > rejects a quantity of %s",
  "caseCount": 3,
  "tags": ["e2e/order-ticket"],
  "timeout": 30000,
  "timeoutSource": "config"
}

Next

• Jest configuration and limits.
• Query recipes: filter by state, tags and other fields.
• All framework guides: scan another runner in the same project.