JJ Richards

Android Test-Driven Development by Tutorials,
Second Edition – Now Updated!

Build testable, sustainable Android apps via JUnit, Mockito, and Espresso
by diving into test-driven development (TDD) in this newly-updated book.

Unity Team

JJ is a Unity developer who is passionate about prototyping cool things and working with world-class indie studios.

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Learn iOS, Swift, Android, Kotlin, Flutter and Dart development and unlock our massive catalogue of 50+ books and 4,000+ videos.