Tomek Kaczanowski's Practical Unit Testing with JUnit and Mockito PDF

By Tomek Kaczanowski

ISBN-10: 8393489393

ISBN-13: 9788393489398

This booklet explains intimately the way to enforce unit checks utilizing extremely popular open resource Java applied sciences JUnit and Mockito. It offers a number strategies essential to write prime quality unit assessments - e.g. mocks, parametrized assessments and matchers. It additionally discusses trade-offs with regards to the alternatives we need to make whilst facing a few real-life code issues.
The publication stresses the significance of writing readable and maintainable unit exams, and places loads of tension on code caliber. It indicates the way to in attaining testable code and to get rid of universal error by way of following the try out pushed improvement technique. each subject mentioned within the booklet is illustrated with code examples, and every bankruptcy is observed by way of a few workouts.

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Extra resources for Practical Unit Testing with JUnit and Mockito

Sample text

Conclusions In this section you have met JUnit and learned: • about the default project structure that will be used throughout the book, 34 Chapter 3. Unit Tests with no Collaborators • how to write test classes and test methods, • how to run tests, • what assertions JUnit provides, • how to use parameterized tests, • how to verify expected exceptions, • how to use annotations for test fixture management. What we have discussed in this section is good enough if you want to write really nice and useful unit tests.

Just for now, we will be concentrating on a subset of testing issues, assuming as we shall that our SUT does not need any collaborators. This assumption – even if it does not hold for the majority of real-life classes – will permit us to demonstrate some important concepts, ideas and techniques. They will be much easier to explain under such conditions, even though their use is by no means limited to a no-collaborators environment. g. the TDD approach – are not even confined to unit testing itself.

There is still some discussion regarding the relation of TDD and test-first. However, it seems that the general understanding of these terms is that they really mean the same. Because of this, I will alternate between using one or other of the two terms throughout the book. This book concentrates on testing aspects, even though you will get a decent dose of the TDD approach here. The best book on TDD that I know of is [freeman2009]. However, I would suggest that you gain some experience in testing techniques before you start reading it.

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Practical Unit Testing with JUnit and Mockito by Tomek Kaczanowski


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