Tomek Kaczanowski Livres

This book explains in detail how to implement unit tests using two very popular open source Java technologies: JUnit and Mockito. It presents a range of techniques necessary to write high quality unit tests - e.g. mocks, parametrized tests and matchers. It also discusses trade-offs related to the choices we have to make when dealing with some real-life code issues. The book stresses the importance of writing readable and maintainable unit tests, and puts a lot of stress on code quality. It shows how to achieve testable code and to eliminate common mistakes by following the Test Driven Development approach. Every topic discussed in the book is illustrated with code examples, and each chapter is accompanied by some exercises.

Nowadays developers are expected to provide code verified by automated tests. And this is good.The tests you write should verify some important parts of the system. They should exercise all important cases and document the way your software works. Your tests are also expected to survive refactorings, and even redesigns, of the system.Unfortunately, not all of the tests we write live up to these expectations. This book provides numerous examples of improvements you can introduce to make your tests stronger, more readable, and more resilient to changes. You will learn about real-life issues, and discover ways of overcoming them. You will get to know new techniques for writing high-quality tests.The goal of this book is to teach you how to write tests in such a way that all the effort you put into them really pays off!