Sign In Start Free Trial
Account

Add to playlist

Create a Playlist

Modal Close icon
You need to login to use this feature.
  • Book Overview & Buying Testing with JUnit
  • Table Of Contents Toc
  • Feedback & Rating feedback
Testing with JUnit

Testing with JUnit

By : Leonard Przybylski, Appel
4.3 (7)
close
close
Testing with JUnit

Testing with JUnit

4.3 (7)
By: Leonard Przybylski, Appel

Overview of this book

JUnit has matured to become the most important tool when it comes to automated developer tests in Java. Supported by all IDEs and build systems, it empowers programmers to deliver software features reliably and efficiently. However, writing good unit tests is a skill that needs to be learned; otherwise it's all too easy to end up in gridlocked development due to messed up production and testing code. Acquiring the best practices for unit testing will help you to prevent such problems and lead your projects to success with respect to quality and costs. This book explains JUnit concepts and best practices applied to the test first approach, a foundation for high quality Java components delivered in time and budget. From the beginning you'll be guided continuously through a practically relevant example and pick up background knowledge and development techniques step by step. Starting with the basics of tests organization you'll soon comprehend the necessity of well structured tests and delve into the relationship of requirement decomposition and the many-faceted world of test double usage. In conjunction with third-party tools you'll be trained in writing your tests efficiently, adapt your test case environment to particular demands and increase the expressiveness of your verification statements. Finally, you'll experience continuous integration as the perfect complement to support short feedback cycles and quality related reports for your whole team. The tutorial gives a profound entry point in the essentials of unit testing with JUnit and prepares you for test-related daily work challenges.
Table of Contents (11 chapters)
close
close
10
Index

Chapter 3. Developing Independently Testable Units

One of the most difficult parts for JUnit beginners confronted with non-trivial real-world situations is to decompose big requirements into small and independently testable units. At the beginning of this chapter, you're going to learn how requirements can be translated into single responsibility components and how they assemble into a collaborating system.

Next you're going to understand the impact of collaboration dependencies on our testing efforts. Once you're aware of the role of collaborators and how a component under test interacts with them, you'll get to know when it is important to replace them with test doubles.

Continuing our timeline example, we'll look at the use cases and application practices of the various double patterns in depth. After that, you'll learn about the advantages and disadvantages of mock frameworks. You'll also see how to work with generated doubles in practice,...

Unlock full access

Continue reading for free

A Packt free trial gives you instant online access to our library of over 7000 practical eBooks and videos, constantly updated with the latest in tech
notes
bookmark Notes and Bookmarks search Search in title playlist Add to playlist font-size Font size

Change the font size

margin-width Margin width

Change margin width

day-mode Day/Sepia/Night Modes

Change background colour

Close icon Search
Country selected

Close icon Your notes and bookmarks

Confirmation

Modal Close icon
claim successful

Buy this book with your credits?

Modal Close icon
Are you sure you want to buy this book with one of your credits?
Close
YES, BUY

Submit Your Feedback

Modal Close icon