AutoFixture

Minimize the 'Arrange' phase of your unit tests.

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README.md

AutoFixture

Write maintainable unit tests, faster.

AutoFixture makes it easier for developers to do Test-Driven Development by automating non-relevant Test Fixture Setup, allowing the Test Developer to focus on the essentials of each test case.

Integrations

AutoFixture offers a variety of utility packages and integrations with most of the major mocking libraries and testing frameworks.

Core packages

The core packages offer the full set of AutoFixture's features without requring any testing framework or third party integration.

Product	Package	Stable	Preview	Downloads
The core package	AutoFixture
Assertion idioms	AutoFixture.Idioms
Seed extensions	AutoFixture.SeedExtensions

Mocking libraries

AutoFixture offers integations with most major .NET mocking libraries.
These integrations enable such features as configuring mocks, auto-injecting mocks, etc.

Product	Package	Stable	Preview	Downloads
Moq	AutoFixture.AutoMoq
NSubstitute	AutoFixture.AutoNSubstitute
FakeItEasy	AutoFixture.AutoFakeItEasy
Rhino Mocks	AutoFixture.AutoRhinoMocks

Testing frameworks

AutoFixture offers integrations with most major .NET testing frameworks.
These integrations enable auto-generation of test cases, combining auto-generated data with inline arguments, etc.

Product	Package	Stable	Preview	Downloads
xUnit v3	AutoFixture.Xunit3
xUnit v2	AutoFixture.Xunit2
xUnit v1	AutoFixture.Xunit
NUnit v4	AutoFixture.NUnit4
NUnit v3	AutoFixture.NUnit3
NUnit v2	AutoFixture.NUnit2
Foq	AutoFixture.AutoFoq

You can check the compatibility with your target framework version on the wiki or on the NuGet website.

.NET Foundation

This project is supported by the .NET Foundation.

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AutoFixture AutoFixture Public

AutoFixture is an open source library for .NET designed to minimize the 'Arrange' phase of your unit tests in order to maximize maintainability. Its primary goal is to allow developers to focus on …

C# 3.5k 356

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AutoFixture Public
AutoFixture is an open source library for .NET designed to minimize the 'Arrange' phase of your unit tests in order to maximize maintainability. Its primary goal is to allow developers to focus on what is being tested rather than how to setup the test scenario, by making it easier to create object graphs containing test data.

AutoFixture/AutoFixture's past year of commit activity

C# 3,537 MIT 356 45 (1 issue needs help) 13 Updated Jul 31, 2026
AutoFixture.Idioms.FsCheck Public
A glue library that integrates AutoFixture, AutoFixture.Idioms and FsCheck

AutoFixture/AutoFixture.Idioms.FsCheck's past year of commit activity

C# 0 MIT 0 0 0 Updated Apr 18, 2026
AutoFixture.xUnit2 Public
AutoFixture.xUnit2 is a .NET library that integrates AutoFixture with xUnit 2.x, allowing you to effortlessly generate test data for your unit tests.

AutoFixture/AutoFixture.xUnit2's past year of commit activity

C# 0 MIT 0 0 0 Updated Apr 18, 2026
Autofixture.NUnit3 Public
AutoFixture.NUnit3 is a .NET library that integrates AutoFixture with NUnit 3.x, allowing you to effortlessly generate test data for your unit tests.

AutoFixture/Autofixture.NUnit3's past year of commit activity

C# 0 MIT 0 0 0 Updated Apr 18, 2026
AutoFixture.AutoFoq Public
AutoFixture.AutoFoq is a .NET library that integrates AutoFixture with Foq, transforming it into an auto-mocking container.

AutoFixture/AutoFixture.AutoFoq's past year of commit activity

C# 0 MIT 0 0 0 Updated Apr 18, 2026
AutoFixture.NUnit2 Public
AutoFixture.NUnit2 is a .NET library that integrates AutoFixture with NUnit 2.x, allowing you to effortlessly generate test data for your unit tests.

AutoFixture/AutoFixture.NUnit2's past year of commit activity

C# 0 MIT 0 1 0 Updated Apr 18, 2026
AutoFixture.AutoRhinoMocks Public
AutoFixture.AutoRhinoMocks is a .NET library that integrates AutoFixture with Rhino Mocks, transforming it into an auto-mocking container.

AutoFixture/AutoFixture.AutoRhinoMocks's past year of commit activity

C# 0 MIT 0 0 0 Updated Apr 18, 2026
AutoFixture.xUnit Public
AutoFixture.xUnit is a .NET library that integrates AutoFixture with xUnit 1.x, allowing you to effortlessly generate test data for your unit tests.

AutoFixture/AutoFixture.xUnit's past year of commit activity

C# 1 MIT 0 0 0 Updated Apr 18, 2026
AutoFixture.TUnit Public

AutoFixture/AutoFixture.TUnit's past year of commit activity

C# 2 MIT 2 0 1 Updated Jan 28, 2026
.github Public

AutoFixture/.github's past year of commit activity

0 MIT 0 0 1 Updated Apr 23, 2025