1.6What This Book Will Build

Over the next 20 chapters, you will build a complete browser test automation system. Not example by example in isolation --- a cohesive, production-grade framework.

Here is what you will have by the end:

• A Playwright test framework with TypeScript, organized by the Page Object Model with composition (not inheritance)
• Fixtures for dependency injection, authentication, and environment-specific configuration
• Network interception for mocking APIs and testing error states without depending on external services
• Visual regression tests with configurable thresholds and baseline management
• Accessibility tests integrated into your existing test suite, not as a separate afterthought
• A CI/CD pipeline in GitHub Actions with parallel execution, artifact collection, and intelligent retry
• Reporting with Playwright's HTML reporter, trace viewer integration, and optionally Allure
• A migration guide for moving an existing Selenium suite to Playwright without rewriting everything at once

Each chapter builds on the previous one. By Chapter 15, when you build the full framework, you will understand every piece because you will have learned it individually first.