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07-07-2025
Playwright Interview – Updated Expert Guide
An automation testing framework by Microsoft, Playwright is an open-source end-to-end test automation framework for web applications.
In this blog, We have included the most commonly asked and discussed interview questions about Playwright, covering its usage, setup, debugging, and everything in between, from beginner to expert level.
Playwright is gaining popularity for end-to-end testing because of its browser versatility, built-in intelligent waiting, and modern, developer-oriented interfaces. For automation testers and QA engineers who want to remain industry leaders in 2025 and beyond, mastering Playwright is non-negotiable.
1) What is Playwright?
Playwright is an automation framework developed by Microsoft for testing web applications across multiple browsers, such as Chromium, Firefox, and WebKit. It is open-source and accepts numerous languages, including JavaScript, TypeScript, Python, Java, C#, and C#. Modern APIs, execution speed, real-world testing of web applications, and other features provide commendable end-to-end testing capability with Playwright.
2) What are the key features of Playwright?
Users equipped with Playwright have access to its powerful features. It comes with automation support for all modern rendering engines, such as Chrome, Edge, Safari, and Firefox. Support for cross-platform and cross-language tests, the auto-wait feature, network interceptions with video recording and screenshots, and advanced tracing of the systems increase test reliability and efficiency.
3) What Differentiates Playwright From Selenium?
Both Playwright and Selenium serve the purpose of automation testing; however, Playwright is seen as more contemporary and easier to use for developers. Flakiness for tests is minimised with Playwright's complete automation of waiting for elements to perform actions. Playwright is also better at multitasking with single-page applications and does multi-browser testing out of the box without extra drivers needing to be installed. Unlike Selenium, which at times requires additional configuration and direct synchronisation, Playwright is less complex due to modern web application features such as auto-waiting, robust selectors, and support for headless testing.
4) Installing Playwright In A Project: How Is It Done?
Playwright is simple to install. Firstly, you need to initialize your project by using npm init -y. After that, Playwright can be installed with the command npm install -D @playwright/test. You can complete the installation with the command npx playwright install to fetch the necessary browser binaries. After downloading, you can start writing and executing your tests using the Playwright test runner.
5) Why do we use the playwright? Config. Ts file?
It defines the boundaries in which the tests can run by setting the base URLS and the browsers in which the tests can execute. In this configurable file, you can set test folders, timeouts, retries, parallel execution parameters, preset base URLS, reporters (HTML, JSON, or Allure), and hooks. Using this file will make it easier to maintain your tests and scale the setups.
6)How do you orchestrate parallel testing in Playwright?
It runs tests in parallel automatically using its built-in test runner. Dividing the tests among multiple worker processes will greatly reduce the time it takes to run them. Customizing the number of parallel workers is possible via the configuration file and the command line with the ----workers flag. This is beneficial for large test suites and CI/CD pipelines, as it greatly reduces the time required to execute all tests.
7) What are the methods of authentication in Playwright?
Playwright provides strategies to simplify authentication in test scenarios. One strategy is automating logging into UI components, where the users log in and the browser's authentication state is saved via the storageState feature. This state can be reused across different tests, minimising the need to log in repeatedly. This is useful for tests that need to begin with an active session or for multi-step login processes.
8) Which CI/CD tools are compatible with Playwright?
Certainly, Playwright integrates well with CI/CD tools including GitHub Actions, GitLab CI, Jenkins, CircleCI, and even Azure DevOps. These server environments are ideal for headless testing. Additionally, failure to test within CI pipelines is easier to troubleshoot and analyse due to tracing, video recording, and screenshot features. These serve as unrivalled aids. Configuration for CI can be set on Playwright. Config. Ts, which contains parameters for the environment.
9) What is auto-waiting in Playwright?
Auto-waiting is one of the most important features provided in Playwright. It takes care of clicks, detail filling and asserting visibility by waiting for the elements to be actionable. This feature addresses almost every issue associated with flaky testing and eliminates the requirement to use explicit waits, timeouts, or delays in the vast majority of cases. It alleviates most matters related to flaky tests that require retries, as the automation intelligently manages preconditions such as checking if the element is loaded in the DOM, is visible, and not disabled, among a few other conditions. This reduces the mess caused in test scripts and improves the logic.
10) How do you debug Playwright tests?
Playwright provides seamless debugging experiences. For example, tests can be executed in debug mode using PWDEBUG=1 in the terminal, which allows for step-wise execution. Furthermore, Playwright allows breakpoints and attachments through page.pause() and test.info(). Attach (). Tracing can also be enabled to provide a comprehensive overview of the test's timeline, including screenshots and network activity, which helps simplify the complex test flows that often obscure the failures.
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