This document describes a book that teaches readers how to write unit tests. It explains that the book will help readers grasp the purpose of unit tests, gain confidence that code works, and write high-quality, maintainable unit tests. The book covers topics like TestNG, Mockito, common pitfalls to avoid, and more. It is over 450 pages and includes examples, exercises, best practices, and information on tools like TestNG, Mockito, and others. The author is Tomek Kaczanowski, a technical team leader who is passionate about code quality, testing, and automation.
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