Mockito

Mockito is an open-source mocking framework for Java that enables developers to write efficient and readable unit tests. It helps isolate the code under test from its dependencies by creating mock objects, allowing for controlled behavior and verification of interactions.

Key facts

First appeared: 2007
Category: technology
Problem solved: Mockito was created to address the verbosity, poor readability, and inflexibility of existing mocking frameworks (like EasyMock 2.x) and manual stubbing/mocking in Java. It aimed to make writing unit tests with mocks simpler, more intuitive, and with less boilerplate code, thereby promoting better test design and maintainability for complex dependency graphs.
Platforms: jvm

Related technologies

JMockit
Spock (for comprehensive testing, including mocking)
JUnit
TestNG
Spring Framework
Maven
Gradle
AssertJ
Hamcrest

Notable users

Google (via Android development)
Netflix
Spring Framework ecosystem
Numerous enterprise Java applications
Countless open-source projects