Playwright: 30 Interview Questions and Answers

Overview

This guide compiles 30 technical interview questions and practical answers focused on automated web testing using Playwright Test and TypeScript. It explains fundamental architecture, differentiating between browsers, isolated browser contexts, and pages. Key discussion points cover locator selection strategies, resolving strict-mode violations, auto-waiting actionability checks, web-first retrying assertions, and managing test-scoped versus worker-scoped fixtures. The resource also covers framework design and enterprise scaling practices, including authentication reuse via storageState, parallel execution, and CI sharding. Real-world automation scenarios address iframes, browser tabs, native dialogs, file uploads, network routing, direct API requests, and debugging failed runs using Trace Viewer.

Table of contents

1. Core concepts
2. Locators that survive UI changes
3. Waiting and assertions
4. Async code and fixture lifecycle
5. Framework and test design
6. Authentication and scaling
7. Frames, tabs and dialogs
8. Files and network control
9. API testing and debugging
10. CI and real-world scenarios
11. Explain this test in an interview
12. Your 30-question revision plan

Selected preview

A Locator describes how to find an element and resolves it again for actions. An ElementHandle refers to a particular DOM node and can become detached after a re-render.

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• QA Engineers
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