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MASTERING UNIT TESTING USING MOCKITO AND JUNIT
MASTERING UNIT TESTING USING MOCKITO AND JUNIT

MASTERING UNIT TESTING USING MOCKITO AND JUNIT: An advanced guide to mastering unit testing using Mockito and JUnit

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MASTERING UNIT TESTING USING MOCKITO AND JUNIT

Chapter 2. Automating JUnit Tests

In this chapter, you will be introduced to the concept of Extreme Programming (XP), Continuous Integration (CI), the benefits of CI, and JUnit test automation using various tools.

The following topics will be covered in this chapter:

  • CI
  • Gradle automation
  • Maven project management
  • Ant
  • Jenkins

Continuous Integration

In college, I was working on a critical steganography (image watermarking) project and simultaneously developing a module on my home computer, where I integrated my changes with other changes on the college server. Most of my time was wasted in integration. After manual integration, I would find everything broken; so, integration was terrifying.

When CI is not available, development teams or developers make changes to code and then all the code changes are brought together and merged. Sometimes, this merge is not very simple; it involves the integration of lots of conflicting changes. Often, after integration, weird bugs crop up and a working module may start to fail, as it involves a complete rework of numerous modules. Nothing goes as planned and the delivery is delayed. As a result, the predictability, cost, and customer service are affected.

CI is an XP concept. It was introduced to prevent integration issues. In CI, developers commit the code periodically, and...

Jenkins

Jenkins is an open source CI tool written in Java. It runs on any web container compliant with Servlet Specification 2.4. The new Apache Tomcat server is an example of a web container with which Jenkins can be integrated as a Windows service.

Jenkins supports various source control platforms, such as CVS, SVN, Git, Mercurial, and ClearCase through the use of plugins.

It can execute automated builds on Ant and Maven projects. Jenkins is free (MIT license) and runs on many operating systems. Jenkins doesn't allow you to create a Gradle project, but you can create a free-style project and build Gradle projects.

To install Jenkins on your local machine, follow the instructions at https://wiki.jenkins-ci.org/display/JENKINS/Installing+Jenkins.

Once Jenkins is installed, we will perform the following steps to configure Jenkins:

  1. Launch the Jenkins URL; from the home page go to Manage Jenkins | Configure system.
  2. Now you need to set up the JDK. Go to the JDK section, click on JDK installations...

Summary

This chapter covered the concept of CI, explored the build automation tools, and configured Jenkins to accomplish the CI.

The Gradle section covered the environment setup, Gradle tasks, daemons, dependency management, repository setup, Eclipse/Java plugins, and gradually explored the Gradle features. The Maven part demonstrated how to set up Maven, described the POM file, project dependency, and explored the default, clean, and site life cycles. The Ant section described how to write the Ant script to compile and execute JUnit tests. Jenkins covered the build automation setup as well as automated build using Gradle, Maven, and Ant.

By now, the reader will be able to write build scripts using Gradle, Maven, and Ant and configure Jenkins to execute the build scripts.

The next chapter provides an overview of test doubles and different test double types with examples, and includes topics such as dummy, stub, mock, spy, and fake.

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Description

A practical and easy-to-follow, yet comprehensive, guide to learning advanced JUnit testing. Each topic is explained and placed in context, and for the more inquisitive, there are more details of the concepts used. This book is for you if you are a developer with some experience in Java application development as well as a basic knowledge of JUnit testing. But for those whose skill set is void of any prior experience with JUnit testing, the book also covers basic fundamentals to get you acquainted with the concepts before putting them into practise.

What you will learn

  • Write advanced JUnit test cases using advanced JUnit 4 features
  • Automate JUnit test cases using Gradle, Maven, and Ant scripting
  • Practice continuous integration with Jenkins and Ant, Maven, and Gradle scripting
  • Monitor code quality with the SonarQube dashboard
  • Analyze static code using PMD, Checkstyle, and FindBugs
  • Master code coverage with Clover, Cobertura, EclEmma, and JaCoCo
  • Design for testability and refactor legacy code
  • Practice testdriven development with Mockito
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Publication date, Length, Edition, Language, ISBN-13
Publication date : Jul 15, 2014
Length: 314 pages
Edition : 1st
Language : English
ISBN-13 : 9781783982509
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Length: 314 pages
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Language : English
ISBN-13 : 9781783982509
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Table of Contents

11 Chapters
1. JUnit 4 – a Total Recall Chevron down icon Chevron up icon
2. Automating JUnit Tests Chevron down icon Chevron up icon
3. Test Doubles Chevron down icon Chevron up icon
4. Progressive Mockito Chevron down icon Chevron up icon
5. Exploring Code Coverage Chevron down icon Chevron up icon
6. Revealing Code Quality Chevron down icon Chevron up icon
7. Unit Testing the Web Tier Chevron down icon Chevron up icon
8. Playing with Data Chevron down icon Chevron up icon
9. Solving Test Puzzles Chevron down icon Chevron up icon
10. Best Practices Chevron down icon Chevron up icon
Index Chevron down icon Chevron up icon

Customer reviews

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Rating distribution
Full star icon Full star icon Full star icon Full star icon Empty star icon 4
(11 Ratings)
5 star 45.5%
4 star 36.4%
3 star 0%
2 star 9.1%
1 star 9.1%
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programmer Oct 14, 2015
Full star icon Full star icon Full star icon Full star icon Full star icon 5
Explains stubs, mocks, spies, dummies and other things covered briefly by Instant Mockito, also by Packt Pub.
Amazon Verified review Amazon
Yogan Naidoo Aug 13, 2020
Full star icon Full star icon Full star icon Full star icon Full star icon 5
This book provides a wonderful introduction and coverage of Testing concepts and tools.Working through the practical examples really increases one's understanding. The author is experienced and the quality of the exercises are proof of that.I also liked the range of topics covered e.g junit, Mockito, continuous integration, ant, maven, jenkins, code coverage, code quality and the Web Tier.The 'Solving Test Puzzles' and 'Best Practices' brings a nice close to the book.This book is dated and there were a few exercises that did not work immediately with newer versions of software. However, I did not find this difficult to resolve.On the whole, this book is well written and added value to me.
Amazon Verified review Amazon
damien Jul 24, 2019
Full star icon Full star icon Full star icon Full star icon Full star icon 5
On parle rarement ou trop vite des tests dans les livres. Celui-ci y est consacré entièrement. Il couvre globalement tout le sujet des TU et des mocks. Tous les développeurs devraient lire ce livre
Amazon Verified review Amazon
Phoenix FireWolf Mar 01, 2018
Full star icon Full star icon Full star icon Full star icon Full star icon 5
good info
Amazon Verified review Amazon
amit k. Jan 13, 2017
Full star icon Full star icon Full star icon Full star icon Full star icon 5
Good for beginners.
Amazon Verified review Amazon
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