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Test-Driven Java Development - Second Edition by Viktor Farcic, Alex Garcia

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Mockito

Mockito is a Java framework that allows easy creation of the test double.

The Gradle dependency is the following:

dependencies { 
  testCompile group: 'org.mockito', name: 'mockito-all', version: '1.+' 
} 

Mockito runs through the JUnit runner. It creates all the required mocks for us and injects them into the class with tests. There are two basic approaches; instantiating mocks by ourselves and injecting them as class dependencies via a class constructor or using a set of annotations. In the next example, we are going to see how it is done using annotations.

In order for a class to use Mockito annotations, it needs to be run with MockitoJUnitRunner. Using the runner simplifies the process because you just simply add annotations to objects ...

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