01
What are generics in TypeScript?
Show answer
Placeholders for types that make reusable code type-safe, for example a helper function returning the same type of item that it receives.
Playwright Testing Interview Questions in Kochi
36 practice questions with answers for Playwright Testing interviews in Kochi.
Playwright Testing jobs in Kochi
Kochi's Infopark and SmartCity host IT-services firms, product companies and start-ups, making it Kerala's largest tech job market along with Thiruvananthapuram. Testing and data roles are common in its service and product teams.
Below are 36 questions that match the mix of service, product and domain employers hiring Playwright automation engineers in Kochi.
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02
How do you test file upload via API?
Show answer
Use request.post with multipart: { file: { name, mimeType, buffer } } and assert the response and stored file details.
03
Write a component test that checks a required field shows an error on blur.
Show answer
test('shows error when email is left empty', async ({ mount }) => {
const component = await mount(<EmailField required />);
const input = component.getByLabel('Email');
await input.focus();
await input.blur();
await expect(component.getByText('Email is required')).toBeVisible();
await expect(input).toHaveAttribute('aria-invalid', 'true');
});
04
How do you open an HTML report downloaded from a CI artifact?
Show answer
Unzip the artifact and run npx playwright show-report followed by the folder path, for example npx playwright show-report ./playwright-report. This starts a small local server, which is needed because traces load through it. Opening index.html directly from disk often fails to show traces. You can also upload a single trace zip to the online trace viewer.
05
Why choose Playwright over Selenium?
Show answer
Auto-waiting, a built-in test runner, Chromium/Firefox/WebKit with one API, network interception, the trace viewer and parallel runs out of the box — usually faster and less flaky.
06
What is the difference between test-scoped and worker-scoped fixtures?
Show answer
A test-scoped fixture is created and torn down for every test, which keeps tests isolated. A worker-scoped fixture is set up once per worker process and shared by all tests that run in it, which suits expensive things like a started server or a seeded account. Declare it with { scope: 'worker' }. Worker fixtures cannot depend on test fixtures.
07
What does outputDir contain and why does it matter in parallel runs?
Show answer
outputDir, test-results by default, holds per-test artifacts such as screenshots, videos and traces. Playwright creates a separate subfolder for each test and retry, so parallel workers do not overwrite each other's files. testInfo.outputPath gives you a safe path inside it for your own files. It is cleared at the start of every run, so do not store anything permanent there.
08
How do you run the same visual tests at mobile, tablet and desktop sizes?
Show answer
Create one project per size in playwright.config, for example using devices['Pixel 7'], devices['iPad Mini'] and a desktop viewport, and point them at the same visual test files with testMatch or a tag. Because the project name is part of the baseline file name, each size keeps its own images automatically. This keeps the test code identical while covering responsive layouts.
09
How can you apply extra CSS only while a screenshot is taken?
Show answer
Pass the stylePath option to toHaveScreenshot or set it in the expect.toHaveScreenshot section of the config. The stylesheet is injected just for the capture, so you can hide scrollbars, freeze a carousel, or set visibility hidden on dynamic widgets without changing the app. It is cleaner than adding test-only classes and also works when a mask box would cover too much of the layout.
10
How do you test how the UI handles a 500 error from the orders API?
Show answer
Mock the endpoint with route.fulfill({ status: 500, json: { message: 'Server error' } }), then open the page. Assert the user sees a friendly error message and a retry button, and that no broken half-rendered table appears. Then make the retry return 200 and check the data loads. This covers a path that is hard to trigger on a real server.
11
Why can beforeAll run more than once in a Playwright run?
Show answer
Each worker is a separate process with its own state. When tests from a file are split across workers, or a worker restarts after a failure, beforeAll runs again in the new worker. So never assume it runs only once globally. For one-time setup across the whole run, use a setup project with dependencies or globalSetup.
12
What is the difference between path parameters and query parameters?
Show answer
Path parameters identify a specific resource and are part of the URL path, like /users/42. Query parameters filter, sort or paginate and follow a question mark, like /users?city=Delhi&page=2. In tests, check invalid path ids return 404, and that each query parameter changes results correctly, including invalid and missing values.
13
How do you validate JSON schema?
Show answer
Use a library such as zod or ajv to define the expected schema and parse the response to fail on missing or wrongly typed fields.
14
What does the DEBUG=pw:api environment variable do?
Show answer
Setting DEBUG=pw:api prints detailed logs of every Playwright API call to the terminal, including waits and retries inside actions. It helps when a test hangs and you need to see exactly which step is waiting and why. Other channels such as pw:browser show browser process output. It is noisy, so use it only while investigating.
15
What does the channel option do?
Show answer
By default Playwright uses its own bundled Chromium, Firefox and WebKit builds. Setting channel: 'chrome' or 'msedge' in a project runs tests in the installed branded Chrome or Edge browser instead. This is useful when you must test on the exact browser users run, for example for codecs or policies. Install with npx playwright install chrome.
16
What are global setup and teardown?
Show answer
Scripts that run once before or after the whole run, for seeding data, starting services or creating authentication state.
17
How do you run tests on mobile viewports?
Show answer
Use device descriptors such as devices['iPhone 13'] in a project config to emulate viewport, user agent and touch.
18
How do you share cookies between API login and UI?
Show answer
Log in with request.post, call request.storageState(), and create a browser context using that state.
19
A test uses forEach with an async callback and the checks inside never seem to run. Why?
Show answer
forEach does not wait for async callbacks, so it starts each callback and returns at once. The test may finish before the assertions run, or their errors are lost. Use for...of with await to run steps in order, or Promise.all with map when the steps can safely run in parallel. A lint rule can flag this pattern.
20
How do you capture browser console messages and page errors?
Show answer
Listen with page.on('console', msg => ...) for console.log, warnings and errors, and page.on('pageerror', err => ...) for uncaught exceptions. Collect them in an array and attach them to the report on failure. Traces also show console output. Uncaught page errors often explain why a button did nothing or a page stayed blank.
21
How do you test accessibility with Playwright?
Show answer
Integrate axe-core through @axe-core/playwright, run an analysis on the page and assert that there are no violations.
22
What are closures?
Show answer
A function that remembers variables from its outer scope even after that scope has finished. They are used for private state and factory helpers.
23
How do you measure API response time?
Show answer
Record timestamps around the request or use response timing, then assert the duration is under an agreed threshold.
24
How do you run one group of tests serially while the rest of the suite runs in parallel?
Show answer
Put the group in its own project with fullyParallel: false and limit it to one worker, which recent versions allow with a workers setting on the project, or run it in a separate CI step with --project=serial --workers=1. Inside a file, test.describe.configure({ mode: 'serial' }) keeps order. Use project dependencies if the group must run after the parallel tests.
25
How do you set baseURL and common headers for API tests?
Show answer
Put them in the use block of playwright.config: use: { baseURL: process.env.API_URL, extraHTTPHeaders: { Accept: 'application/json', Authorization: `Bearer ${process.env.TOKEN}` } }. The request fixture then sends them on every call, and tests use short paths like /api/users. Keep tokens in environment variables, never in the repository.
26
How do you organise tests with page object model in Playwright?
Show answer
Create a class that takes a page, defines locators as properties and exposes action methods; instantiate it in a fixture for clean tests.
27
How do you validate an API response in Playwright?
Show answer
Assert the status with expect(res.status()).toBe(200), parse res.json() and check fields, using schema validation for the structure.
28
What are interfaces and types in TypeScript?
Show answer
Both describe the shape of data. Interfaces are extendable and suit object contracts; type aliases can also model unions and primitives.
29
How do you handle secrets such as passwords and tokens in CI?
Show answer
Store them in the CI system's secret store and pass them as environment variables, never in the repository or config files. Read them through process.env and fail fast if they are missing. Use dedicated test accounts with limited rights. Avoid printing them in logs, and make sure traces and screenshots do not expose them in reports.
30
How do you reuse login state across tests?
Show answer
Log in once in global setup, save storageState to a JSON file and set use.storageState in the config so every test starts logged in.
31
How do you handle GraphQL APIs in Playwright?
Show answer
POST the query and variables as JSON to the single endpoint and assert both data and errors fields in the response.
32
What does fullyParallel change?
Show answer
By default Playwright runs test files in parallel but tests within one file in order in a single worker. fullyParallel: true lets tests inside a file run in parallel across workers too. It speeds up suites with big files, but every test must be independent. You can also enable it per file with test.describe.configure({ mode: 'parallel' }).
33
How do you take screenshots and videos?
Show answer
page.screenshot() for captures and config options use: { screenshot: 'only-on-failure', video: 'retain-on-failure' } for automatic evidence.
34
How do access modifiers help in page object classes?
Show answer
private and protected hide internal locators and helper steps, so tests can only call meaningful public methods such as login or addToCart. This keeps tests readable and lets you change internals without breaking callers. readonly on the page field prevents it from being replaced. TypeScript enforces these at compile time only, not at runtime.
35
How do you debug a Playwright test?
Show answer
Use --debug or the Inspector, page.pause(), UI mode, the trace viewer and headed runs with slowMo.
36
Describe a time a test passed but the feature was actually broken.
Show answer
Situation: a checkout test passed, but users saw a blank order summary. Task: find why. Action: I found the test only asserted that the summary container was visible, not its contents. I added assertions on item names, totals and the order id. Result: the test caught the regression, and I reviewed other tests for similar weak assertions.
Companies with offices in Kochi (3)
Consulting
EY
Playwright Testing interview questions
Bengaluru, Kolkata, Gurugram +2
View questionsIT services
UST
Playwright Testing interview questions
Thiruvananthapuram, Kochi, Bengaluru +2
View questionsConsulting
Grant Thornton Bharat
Playwright Testing interview questions
Gurugram, Mumbai, Bengaluru +3
View questionsFew big employers listed in Kochi?
Many Kochi candidates also apply to teams in Bangalore and to remote or hybrid roles. Practise the Bangalore set as well.
Frequently asked questions
Which companies hire Playwright Testing professionals in Kochi?
Companies with large offices in Kochi include EY, UST, Grant Thornton Bharat. Use their company pages below to practise employer-specific sets.
Are Playwright Testing interviews in Kochi different from other cities?
The questions depend more on the company than the city. Kochi's mix of employers decides the style: Testing and data roles are common in its service and product teams
How do I find Playwright Testing jobs in Kochi?
Shortlist companies with Kochi offices, keep your CV focused on Playwright Testing projects, apply on company career pages and job portals with the Kochi filter, and practise the questions on this page before each interview.
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