Tag Archives: Mockito

This article is part of our Academy Course titled Testing with Mockito. In this course, you will dive into the magic of Mockito. You will learn about Mocks, Spies and Partial Mocks, and their corresponding Stubbing behaviour. You will also see the process of Verification with Test Doubles and Object Matchers. Finally, Test Driven Development (TDD) with Mockito is discussed ...

Course Overview Mockito is an open source testing framework for Java released under the MIT License.The framework allows the creation of test double objects (mock objects) in automated unit tests for the purpose of Test-driven Development (TDD) or Behavior Driven Development (BDD). As the official documentation states: “Mockito is a mocking framework that tastes really good. It lets you write ...

Mockito-Java8 is a set of Mockito add-ons leveraging Java 8 and lambda expressions to make mocking with Mockito even more compact. At the beginning of 2015 I gave my flash talk Java 8 brings power to testing! at GeeCON TDD 2015 and DevConf.cz 2015. In my speech using 4 examples I showed how Java 8 – namely lambda expressions – ...

If our code has obvious faults, we are very motivated to improve it. However, at some point we decide that our code is “good enough” and move on. Typically this happens when we think that the benefits of improving our existing code are smaller than the required work. Of course, if we underestimate our return of investment, we can make ...

The subtitle of Sujoy Acharya‘s Mockito Essentials (Packt Publishing, October 2014) is: “A practical guide to get you up and running with unit testing using Mockito.” The Preface and seven chapters in Mockito Essentials span approximately 190 substantive pages. Preface In the Preface, author Sujoy Acharya writes that Mockito Essentials “is an advanced-level guide that will help software developers to ...

I sometimes use FizzBuzz to demonstrate the basics of unit testing to newbies. Although FizzBuzz is really simple problem, it can also be used to demonstrate more advanced unit testing techniques like mocking. The FizzBuzz Kata: “Write a program that prints the numbers from 1 to 100. But for multiples of three print “Fizz” instead of the number and for ...

Mockito is a mocking framework that lets you write beatiful tests with clean and simple API. It biases toward minimal specifications, makes different behaviors look different, and displays clear error messages. Creating Mocks To create a mock using Mockito, simply annotate mocks with @Mock and call MockitoAnnotations.initMocks(this).       import org.mockito.Mock; import org.mockito.MockitoAnnotations; public class FooClassTest { @Mock mockFoo; ...

A good unit test should fail for only one reason. This means that a proper unit test tests only one logical concept. If we want to write clean tests, we have to identify those logical concepts, and write only one test case per logical concept. This blog post describes how we can identify the logical concepts found from our tests, ...

It is pretty hard to figure out a good definition for clean code because everyone of us has our own definition for the word clean. However, there is one definition which seems to be universal: Clean code is easy to read. This might come as a surprise to some of you, but I think that this definition applies to test ...