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MOCKITO COOKBOOK

You're reading from   MOCKITO COOKBOOK Over 65 recipes to get you up and running with unit testing using Mockito.

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Product type Paperback
Published in Jun 2014
Publisher
ISBN-13 9781783982745
Length 284 pages
Edition 1st Edition
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Author (1):
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Marcin Grzejszczak Marcin Grzejszczak
Author Profile Icon Marcin Grzejszczak
Marcin Grzejszczak
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Toc

Table of Contents (12) Chapters Close

Preface 1. Getting Started with Mockito FREE CHAPTER 2. Creating Mocks 3. Creating Spies and Partial Mocks 4. Stubbing Behavior of Mocks 5. Stubbing Behavior of Spies 6. Verifying Test Doubles 7. Verifying Behavior with Object Matchers 8. Refactoring with Mockito 9. Integration Testing with Mockito and DI Frameworks 10. Mocking Libraries Comparison Index

Introduction

Before going into the details regarding how to create a spy, let's first consider what a spy really is. It's an object that may have predefined answers to its method executions, whereas by default it calls the real implementation. It also records the method calls for further verification. So how does it differ from any other test double? Well, apart from the fact that you can stub its methods, you can also verify its behavior. From the theoretical point of view, a spy is nothing but a partial mock, whose advantages and risks have been described in greater depth in the introduction to the previous chapter.

In general, you should use neither spies nor partial mocks in a well-designed code base. If you do use them, it most likely means that you are violating the S in the SOLID principles (described in more depth in the previous chapter). Let's have another look at that principle as a reminder.

Note

(S) Single responsibility principle: a class should have only a single...

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