What are the best mock frameworks for Java?

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What are the best mock frameworks for Java?

4

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100

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Feb 18, 2023

Last
Updated

3 Options Considered

Best mock frameworks for Java	Price	Last Updated
56 Mockito	-	Nov 7, 2022
50 JMockit	-	Feb 18, 2023
-- EasyMock	-	Sep 24, 2020

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PowerMock

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score 39 · Answer 1

Mockito

Top Pro

Simple, clean API

Mockito focuses on having a very simple and clean API to allow ease of use and a simple way to get started. It allows users to use the same techniques when mocking classes or interfaces as there is only one kind of mock and one way of creating mocks. See More

Top Pro

Large community support

Top Pro

PowerMock extensions solve some difficult edge cases

PowerMock extensions to Mockito allow for testing static methods, etc. See More

Top Pro

Verification and exceptions are clean and flexible

Users can easily track failed verifications in tests and these exceptions lead the user to the actual point of interaction in the code. The stack trace will always be clean and verification can be flexible in the order it is presented ensuring the most important verifications can be shown first. See More

Top Pro

Ease of use

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score 31 · Answer 2

JMockit

Top Con

Its development is abandoned

No new commits for several years. See More

Top Pro

Can mock everything

JMockit has the ability to mock final classes and final, private and static methods whereas other mocking frameworks only work on a few of these. See More

Top Con

Small community support

Only 3 contributors on Github , near all work done by 1 developer. See More

Top Pro

Instance capture ability

Being able to capture instances and mock implementations as the test executes without having any knowledge of the actual implementation classes allows JMockit to verify these special objects through regular assertions with custom validation methods for each matching object. See More

Top Con

Learning curve is a bit steep

Since JMockit has a much larger scope that other mocking frameworks and as a result, the learning curve will be a bit steep. See More

Top Pro

Great resources

The official tutorial contains thorough explanations and discussions of all methods, annotations, fields etc.., with lots of easy to understand examples. The API documentation is very complete as well and it provides detailed explanation for all elements of the mocking API. See More

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score 13 · Answer 3

EasyMock

Top Pro

Great resources for beginners

A great step-by-step guide for installation and first use is provided by the EasyMock team. In addition there is the full API available for browsing and understanding the framework more. See More

Top Con

Small community

Although EasyMock has great resources including their User guide and Javadocs, there is a need for a dedicated community that it seems to not have. Other frameworks have more support and community around them resulting in more developers choosing other frameworks. See More

Top Pro

Flexible

EasyMock allows for developers to be able to switch between nice, normal, and strict mocking controls. See More

Top Pro

Full interaction control

EasyMock requires the user to put down all interactions in code, allowing full control over all interactions that will occur between EasyMock and the code. Other frameworks take care of these interactions which can lead to test scenarios out of the developers control. See More

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What are the best mock frameworks for Java?

3 Options Considered

Mockito

My Recommendation for Mockito

My Recommendation for Mockito

Simple, clean API

Large community support

PowerMock extensions solve some difficult edge cases

Verification and exceptions are clean and flexible

Ease of use

JMockit

My Recommendation for JMockit

My Recommendation for JMockit

Its development is abandoned

Can mock everything

Small community support

Instance capture ability

Learning curve is a bit steep

Great resources

EasyMock

My Recommendation for EasyMock

My Recommendation for EasyMock

Great resources for beginners

Small community

Flexible

Full interaction control

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PowerMock

My Recommendation for PowerMock

My Recommendation for PowerMock

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