This book guides you through implementing screenshot testing in Android projects—from foundational concepts to production CI/CD integration. You’ll learn how to write effective visual tests for components and screens, verify UI consistency across device configurations (themes, orientations, font sizes, locales), and test across different form factors including phones, tablets, and foldable phones.
The book covers framework selection, establishing team standards, and advanced techniques like parameterized testing and auto-generating tests from @Preview functions. You’ll also learn optimization strategies to reduce execution time and integrate visual testing into your continuous integration pipeline.
The book is designed for Android developers, mobile QA engineers, team leads, and design system developers. The book requires no prior visual testing experience. Rather than focusing on specific tools that quickly become outdated, it emphasizes fundamental principles and best practices that remain relevant as frameworks grow. All concepts are demonstrated with a complete mood tracker application, with code examples and implementations available online.
Discover the core benefits and transform your development process.
UI tests verify behavior but cannot catch visual issues like misaligned layouts, unreadable text colors, or incorrect component positioning.
Verifying every combination of devices, themes, font sizes, and locales manually becomes impossible as your app grows and supports more configurations.
Detect unintended visual regressions when updating libraries, restructuring code, ensuring UI changes remain intentional during refactoring.
Understand the core visual testing principles and when to use screenshot tests in your Android projects.
Automatically test across themes, orientations, font sizes, locales, and device form factors.
Learn how to choose the right visual testing framework and establish standards that scale across your team.
Integrate visual testing to your workflow and detect visual regressions.
Write robust tests for Compose components, screens, and handle dynamic content and animations.
Understand the do's and don'ts to avoid flaky tests and build a robust testing suite.
Alex Zhukovich is an Android developer specializing in mobile testing automation. Over a decade, he has implemented screenshot testing workflows for multiple organizations, helping catch thousands of visual bugs before release. He continues to refine testing practices for high-quality Android applications.
