Playwright Automation: Top 25 Interview Q&A PART-1
Playwright
Automation: Top 25 Interview Q&A PART-1
Playwright is a powerful automation tool for web applications,
known for supporting multiple languages like JavaScript, TypeScript, Python,
C#, and Java. It enables efficient browser automation, making it a popular
choice for QA and test engineers. Below are the top 50 questions and answers
that can help you prepare for Playwright Automation interviews. Playwright
Automation Online Training,
1. What is Playwright?
Answer: Playwright
is an open-source automation framework by Microsoft that allows developers and
QA engineers to automate web browsers like Chromium, Firefox, and WebKit. It
supports multiple languages, including JavaScript, Python, C#, and Java. Playwright
Training,
2. How is Playwright different
from Selenium?
Answer: Playwright supports all modern rendering engines
like Chromium, Firefox, and WebKit, and provides better support for handling
modern web applications, faster execution, and easier debugging compared to
Selenium.
3. What browsers does Playwright
support?
Answer:
Playwright supports Chromium (Google Chrome and Microsoft Edge), WebKit
(Safari), and Firefox. Playwright
with TypeScript Training,
4. How do you install Playwright?
Answer: You can install Playwright using npm with the
following command:
bash
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npm install playwright
5. Can you run Playwright tests
in headless mode?
Answer: Yes,
Playwright tests can run in headless mode by default, which means the browser
runs without a UI. You can set headless mode to false
to see the browser in action: Playwright
Course Online
javascript
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const browser = await playwright.chromium.launch({ headless:
false });
6. How do you start a browser
session in Playwright?
Answer: You can start a browser session using the launch method:
javascript
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const browser = await playwright.chromium.launch();
7. What is a context in
Playwright?
Answer: A browser context in Playwright is an isolated
session within the browser. You can think of it as an incognito or private
window with its own cache and cookies.
8. How do you create a new page
in Playwright?
Answer: After creating a browser and context, you can
create a new page using the newPage() method:
javascript
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const page = await context.newPage();
9. How do you navigate to a URL
in Playwright?
Answer: Use the goto() method
to navigate to a URL:
javascript
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await page.goto('https://example.com');
10. How do you interact with
elements in Playwright?
Answer: You can interact with elements using methods like click, fill, type, etc.:
javascript
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await page.click('#submit-button');
await page.fill('#username', 'exampleUser');
11. How do you take a screenshot
in Playwright?
Answer: You can take a screenshot using the screenshot() method:
javascript
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await page.screenshot({ path: 'screenshot.png' });
12. What is the use of waitForSelector in Playwright?
Answer: The waitForSelector method
is used to wait until a selector is available in the DOM. It is useful for
handling dynamic content.
javascript
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await page.waitForSelector('#dynamic-element');
13. How do you handle dropdowns
in Playwright?
Answer: You can handle dropdowns using the selectOption method:
javascript
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await page.selectOption('#dropdown', 'optionValue');
14. Can Playwright be integrated
with CI/CD tools?
Answer: Yes, Playwright can be integrated with CI/CD
pipelines like Jenkins, GitHub Actions, and Azure DevOps.
15. What are Playwright test
runners?
Answer: Playwright provides its own test runner called Playwright Test that is optimized for parallel execution, handling
retries, and reporting.
16. How do you perform assertions
in Playwright?
Answer: Playwright integrates with testing libraries like
Jest or Mocha, but with Playwright
Test, you can
directly use:
javascript
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expect(await page.title()).toBe('Expected Title');
17. What is auto-waiting in
Playwright?
Answer: Playwright automatically waits for elements to be
actionable (e.g., visible, attached to the DOM) before performing actions like
clicking or typing.
18. How do you handle frames in
Playwright?
Answer: You can handle frames using the frame() method:
javascript
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const frame = page.frame({ name: 'frame-name' });
await frame.click('#button-in-frame');
19. What are the different
locators in Playwright?
Answer: Playwright supports CSS selectors, XPath, text
selectors, and role selectors for locating elements.
20. How do you handle multiple
windows in Playwright?
Answer: You can handle multiple windows by listening to
the newPage event:
javascript
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const [newPage] = await Promise.all([
context.waitForEvent('page'),
page.click('#open-new-window')
]);
21. How do you handle file
uploads in Playwright?
Answer: Use the setInputFiles method
to handle file uploads:
javascript
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await page.setInputFiles('#file-upload', 'path/to/file.png');
22. How do you handle
authentication in Playwright?
Answer: Playwright provides context-level authentication
management using cookies, headers, or storage state files.
23. What is the storageState in Playwright?
Answer: The storageState is a
JSON file that stores cookies and local storage, useful for authentication
across multiple tests.
24. How do you handle alerts,
prompts, and confirmations in Playwright?
Answer: Use the page.on('dialog', ...) event to handle alerts, prompts, and confirmations:
javascript
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page.on('dialog', async dialog => {
await
dialog.accept();
});
25. Can you run tests in parallel
in Playwright?
Answer: Yes, Playwright
supports running tests in parallel using its built-in test runner.
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