Playwright Assertions Complete Guide

Overview

This handbook provides a comprehensive guide to Playwright assertions, covering web-first assertions, locator state, and page and API assertions. It delves into advanced topics such as soft checks, polling, retries, visual testing, accessibility snapshots, custom matchers, and production-ready assertion strategies. The guide is designed for QA Engineers, SDETs, and automation testers who aim to write readable, resilient, and debuggable assertions. Each chapter includes a clear explanation, practical TypeScript examples, key takeaways, and hands-on practice prompts to reinforce learning and application of concepts.

Table of contents

1. What Is an Assertion in Playwright?
2. Generic Assertions vs Web-first Assertions
3. Default Assertion Timeout
4. Per-assertion Timeout
5. toBeVisible()
6. toBeHidden()
7. toBeAttached()
8. toBeEmpty()
9. toBeEnabled() and toBeDisabled()
10. toBeEditable()
11. toBeFocused()
12. toBeChecked()
13. toBeInViewport()
14. toHaveText()
15. toContainText()

Who this resource is for

• QA Engineer