Book Image

Mastering Software Testing with JUnit 5

By : Boni Garcia
Book Image

Mastering Software Testing with JUnit 5

By: Boni Garcia

Overview of this book

When building an application it is of utmost importance to have clean code, a productive environment and efficient systems in place. Having automated unit testing in place helps developers to achieve these goals. The JUnit testing framework is a popular choice among Java developers and has recently released a major version update with JUnit 5. This book shows you how to make use of the power of JUnit 5 to write better software. The book begins with an introduction to software quality and software testing. After that, you will see an in-depth analysis of all the features of Jupiter, the new programming and extension model provided by JUnit 5. You will learn how to integrate JUnit 5 with other frameworks such as Mockito, Spring, Selenium, Cucumber, and Docker. After the technical features of JUnit 5, the final part of this book will train you for the daily work of a software tester. You will learn best practices for writing meaningful tests. Finally, you will learn how software testing fits into the overall software development process, and sits alongside continuous integration, defect tracking, and test reporting.

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Table of Contents (8 chapters)
Preface
Preface
What this book covers
What you need for this book
Who this book is for
Conventions
Reader feedback
Customer support
Free Chapter
1
Retrospective On Software Quality And Java Testing
Retrospective On Software Quality And Java Testing
Software quality
Software testing
Testing frameworks for the JVM
Summary
2
What’s New In JUnit 5
What’s New In JUnit 5
Road to JUnit 5
JUnit 5 architecture
Running tests in JUnit 5
The extension model of JUnit 5
Summary
3
JUnit 5 Standard Tests
JUnit 5 Standard Tests
Test lifecycle
Assertions
Tagging and filtering tests
Conditional test execution
Nested tests
Repeated tests
Migration from JUnit 4 to JUnit 5
Summary
4
Simplifying Testing With Advanced JUnit Features
Simplifying Testing With Advanced JUnit Features
Dependency injection
Dynamic tests
Test interfaces
Test templates
Parameterized tests
Java 9
Beyond JUnit 5.0
Summary
5
Integration Of JUnit 5 With External Frameworks
Integration Of JUnit 5 With External Frameworks
Mockito
Spring
Selenium
Cucumber
Docker
Android
REST
Summary
6
From Requirements To Test Cases
From Requirements To Test Cases
The importance of requirements
Test planning
Test design
Software testing principles
Test anti-patterns
Summary
7
Testing Management
Testing Management
Software development processes
Continuous Integration
Test reporting
Defect-tracking systems
Static analysis
Putting all pieces together
Summary

Simplifying Testing With Advanced JUnit Features

Simplicity is the ultimate sophistication.
- Leonardo da Vinci

So far, we have discovered the basics of Jupiter, the brand-new programming model provided by the JUnit 5 framework. Moreover, Jupiter provides a rich range of possibilities which allows to create different types of test cases. In this chapter, we review these advanced features. To that aim, this chapter is structured as follows:

  • Dependency injection: This section first takes a look at dependency injection for constructors and methods in test classes. Then, it reviews the three parameter resolvers provided out of the box in Jupiter. These resolvers allow to inject objects of TestInfo, RepetitionInfo, and TestReporter inside tests.
  • Dynamic tests: This section discusses how dynamic tests are implemented in JUnit 5, using the methods dynamicTest and stream.
  • Test interfaces...
Previous Section
End of Section 1
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