Testing with Playwright

The route

1. What to test, and what to leave alone

   Choosing the handful of paths that genuinely deserve end-to-end coverage.

   You board here
   80 min
2. Selectors that survive a redesign

   Roles, then labels, then test ids — in that order, and why.

   80 min
3. Honest waiting

   Web-first assertions, and how every sleep you delete makes the suite faster and truer.

   80 min
4. Fixtures and data you control

   Seeding and isolation, so tests pass in any order and on any machine.

   80 min
5. In CI, with traces

   Parallelism, sharding and retries — and reading a trace instead of re-running.

   85 min

A look at the teaching

// Brittle: coupled to the DOM's shape.
await page.locator('div.panel > button.btn-primary').click();

// Durable: coupled to what the person sees.
await page.getByRole('button', { name: 'Buy this course' }).click();

// Then assert on state, never on a timer.
await expect(page.getByText('Ticket issued')).toBeVisible();

Who is driving