Re: Unit Testing In Java Ebook Download
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Get StartedRecommended ContentEbookImprove Unit Testing for Java With Automation: Best Practices for Java DevelopersDatasheetParasoft JtestHow to Increase Code Coverage & ROI With Java Unit TestingDownload this guide for game-changing strategies to knock down roadblocks, automate unit testing with AI-powered assistive technologies, and increase Java unit testing ROI.
Get StartedRecommended ContentEbookStrategy Guide: How to Increase Code Coverage & ROI With Java Unit TestingDatasheetParasoft JtestImprove Unit Testing for Java With AutomationLearn best practices and get helpful tips to address common unit testing challenges in this ebook, which includes a JUnit tutorial.
The Pragmatic Programmers classic is back! Freshly updated for modern software development, Pragmatic Unit Testing in Java 8 With JUnit teaches you how to write and run easily maintained unit tests in JUnit with confidence. You'll learn mnemonics to help you know what tests to write, how to remember all the boundary conditions, and what the qualities of a good test are. You'll see how unit tests can pay off by allowing you to keep your system code clean, and you'll learn how to handle the stuff that seems too tough to test.
Pragmatic Unit Testing in Java 8 With JUnit steps you through all the important unit testing topics. If you've never written a unit test, you'll see screen shots from Eclipse, IntelliJ IDEA, and NetBeans that will help you get past the hard part--getting set up and started.
Once past the basics, you'll learn why you want to write unit tests and how to effectively use JUnit. But the meaty part of the book is its collected unit testing wisdom from people who've been there, done that on production systems for at least 15 years: veteran author and developer Jeff Langr, building on the wisdom of Pragmatic Programmers Andy Hunt and Dave Thomas. You'll learn:
that I wrote last year. The aim of such an article is usually to boost the sales of the book. It is no different in this case, but since this is a book that I wrote, and I am the person, who is writing the review it would be extremely awkward to praise the book. So I will not, although I like this book a lot. I think loving your own product, at least at the time when it is ready is a must. You may think about it differently later like I do about the previous edition of the same book, which could have been better. But then again, that is why there is the second edition in addition to the fact that Java developed in the meantime and it became Java 11 from Java 9. But back to the previous thought: you have to love your product when it is finished otherwise you can just throw it away. If you do not like it no-one else will. What is also important that you also have to love your work while you are working on it. And I did and I enjoyed creating this book.
Thus now I will write about the book, what it is, and what I intended it to be. Later in the article, I will also talk about how I was working on the book, some technicalities, and some secrets. (They are not that much of a secret if I publish them here, are they.) But before those, have the URLs here, where you can buy my book at PACKT, or Amazon, etc.
In agreement with the publisher, I wanted to write a book for those, who want to learn Java but already has some programming experience. I did not want to write about the simple notion of variables, loops, conditional constructs. I wanted to write a book that teaches you Java and a bit of programming. I wanted a book that any PHP, Python, C#, C, C++, Go, etc. programmer fresh out of uni can read and learn some Java programming and they can decide if it is for them or not. I wanted to dedicate the last chapter to non-java programming topics, like what can happen later in your career if you start as a programmer. You can stay a programmer, or become an architect, project manager, devops engineer. There are many possibilities based upon opportunities and interest. This intention was met with less agreement from the publisher side, but they accepted that my hands are the one that hit the keyboard and we got to a compromise. So the last chapter is also about some technical topics, like Java agent, polyglot programming, annotation processing, DSL, SDLC and so on.
is how you get started. To start you need to install the Java environment and you have to get familiar with the command line tools. This is a bit cumbersome and in the case of Java, it is more complex than it is with other languages. I have some friends who started to learn Java using this book and struggled with it (not because of the book, but because of the complexity of the task). When you start learning Java you have to be patient at this point and you must have a strong belief that it will work.
is about the supporting tools and about the basic language elements. Even though the book is for those who can already program in some programming language the text has to describe the basic elements of the language like variables, classes, methods, types, expressions, loops and so on. You can see how complex Java is so that it is already the
In addition to that, the chapter details most of the concurrent programming tools: wait, notify, locks, queues. The chapter concludes with the introduction of microbenchmarking that shows has faster parallel programs run faster on many CPUs.
is about creating a simple web interface for the program. Because the main topic of the book is Java and not HTML, CSS and JavaScript the front-end is fairly simple. On the other hand, the chapter focuses on IP, TCP, DNS, HTTP, and even HTTP/2. Then it goes on detailing the C/S architecture, mentions JavaServer Pages (a must is a must) and then we develop the code writing a servlet running with Jetty.
is the last chapter and that way it is the densest. It talks about topics that all developers should know about but hardly any developer will use. You, probably, will never create a Java agent or an annotation interface. But you should know what they are and that is why they are described here. There are also a few words about polyglot programming, which will be more and more prevalent. The majority of the chapter is about how programming in an enterprise setting works.
My motivation was to create a programming book that will outlast the current version of Java. A book that teaches whoever reads it a bit of programming and helps them start to become a better programmer. Maybe my frustration meeting a lot of job interview candidates who had no clue in some of the very essential areas but who still thought they were senior developers was also a motivation factor.
Packt wanted me to write the book using Microsoft Word or using an online WordPress based WYSIWYG editor. WordPress has markup editing possibility, but this was switched off. I asked that they switch it on, but I was refused. So I decided to use Microsoft Word when I created the first edition of the book. The result was disastrous. The code samples copied from the actual source were reformatted during the editing process somewhere in the hands of the editors. Some of the formatting change made the code hard to read. Some of the changes were simply wrong, like removing all the spaces between the word int and the variable name n resulting intn.
When I started the second edition I decided to hack the system. By that time I was practicing a bit with Python and I created the Pyama project that can fetch code fragments from the source directories and it can insert it into Markdown files overriding the old versions. I also created a script that converted the special WordPress flavor HTML into Markdown and back. The first edition of my book was converted by Packt into this WordPress format.
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A big thank you to Sam Zaydel, Alessandro Campeis, Frances Buran, Tiffany Taylor, and especially Marina Michaels, whose invaluable feedback helped shape the book and made me a better writer along the way. Thanks also to everyone else at Manning who worked on this book in production and behind the scenes.
This book takes you to that next level. It teaches a scientific, precise definition of the ideal unit test. That definition provides a universal frame of reference, which will help you look at many of your tests in a new light and see which of them contribute to the project and which must be refactored or removed.
VLADIMIR KHORIKOV is a software engineer, Microsoft MVP, and Pluralsight author. He has been professionally involved in software development for over 15 years, including mentoring teams on the ins and outs of unit testing. During the past several years, Vladimir has written several popular blog post series and an online training course on the topic of unit testing. The biggest advantage of his teaching style, and the one students often praise, is his tendency to have a strong theoretic background, which he then applies to practical examples.
When it comes to enterprise application development, almost every project includes at least some unit tests. A significant percentage of such projects go far beyond that: they achieve good code coverage with lots and lots of unit and integration tests. The ratio between the production code and the test code could be anywhere between 1:1 and 1:3 (for each line of production code, there are one to three lines of test code). Sometimes, this ratio goes much higher than that, to a whopping 1:10.
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