Testing / Playwright Interview questions

What are Playwright's API testing capabilities?

Beyond browser automation, Playwright includes an APIRequestContext for making direct HTTP requests, without launching a browser at all.

const response = await request.post('/api/login', {
  data: { email: 'a@b.com', password: 'secret' },
});
expect(response.status()).toBe(200);
const body = await response.json();

This context shares the same cookie jar as a browser context when created from one, which makes it possible to set up application state via fast API calls (like creating a test user) before switching to UI actions for the part actually under test - avoiding slow UI-driven setup for every test. It also supports the same request/response inspection used for network mocking, making it useful for pure backend contract testing independent of any UI.

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APIRequestContext is used for: Only mocking requests, never sending real ones

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Making direct HTTP requests without a browser

✓ Correct! Well done.

Taking screenshots

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A common pattern is using API requests to: Replace all UI testing entirely

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Set up state quickly before switching to UI actions

✓ Correct! Well done.

Slow down test setup deliberately

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