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MASTERING UNIT TESTING USING MOCKITO AND JUNIT

By : Acharya

4 (11)

MASTERING UNIT TESTING USING MOCKITO AND JUNIT

4 (11)

By: Acharya

Overview of this book

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.

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. JUnit 4 – a Total Recall

1. JUnit 4 – a Total Recall

Defining unit testing

Working with JUnit 4

Working with JUnit 4++

Summary

2. Automating JUnit Tests

2. Automating JUnit Tests

Continuous Integration

Jenkins

Summary

3. Test Doubles

3. Test Doubles

Dummy

Stub

Fake

Mock

Spy

Summary

4. Progressive Mockito

4. Progressive Mockito

Working with Mockito

Drinking Mockito

Summary

5. Exploring Code Coverage

5. Exploring Code Coverage

Understanding code coverage

Configuring the Eclipse plugin

Measuring coverage using Gradle

Working with the Maven Cobertura plugin

Running the Cobertura Ant task

Summary

6. Revealing Code Quality

6. Revealing Code Quality

Understanding the static code analysis

Working with the Checkstyle plugin

Exploring the FindBugs plugin

Working with the PMD plugin

Monitoring code quality with SonarQube

Getting familiar with false positives

Summary

7. Unit Testing the Web Tier

7. Unit Testing the Web Tier

Unit testing servlets

Playing with Spring MVC

Summary

8. Playing with Data

8. Playing with Data

Separating concerns

Unit testing the persistence logic

Simplifying persistence with Spring

Verifying the system integrity

Writing integration tests with Spring

Summary

9. Solving Test Puzzles

9. Solving Test Puzzles

Working with the legacy code

Designing for testability

Working with greenfield code

Summary

10. Best Practices

10. Best Practices

Writing meaningful tests

Automating JUnit tests

Configuring tests

Working with assertions

Handling exceptions

Working with test smells

Summary

Index

Index

Customer Reviews

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Dummy

An example of a dummy would be a movie scene where the double doesn't perform anything but is only present on the screen. They are used when the actual actor is not present, but their presence is needed for a scene, such as watching the tennis finale of a US Open match.

Similarly, dummy objects are passed to avoid NullPointerException for mandatory parameter objects as follows:

Book javaBook = new Book("Java 101", "123456");
Member dummyMember = new DummyMember());
javaBook.issueTo(dummyMember);
assertEquals(javaBook.numberOfTimesIssued(),1);

In the preceding code snippet, a dummy member was created and passed to a book object to test whether a book can report the number of times it was issued. Here, a member object is not used anywhere but it's needed to issue a book.

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Programming languages

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