---

title: "<span style='color: white;'>Fluent Assertions</span>"

layout: splash

date: 2016-03-23T11:48:41-04:00

header:

overlay_color: "#373737"

overlay_filter: "0.5"

overlay_image: "/assets/images/FA_Partner_Logo.png"

cta_label: "Fluent Assertions 8.7 is out with extensive System.Text.Json support"

cta_url: "https://fluentassertions.com/releases/#870"

caption: " "

excerpt: 'Now an Xceed Partner! - [Learn More](https://xceed.com/fluent-assertions-faq/)


[](https://github.com/fluentassertions/fluentassertions/releases/latest)

'

intro:

- excerpt: '

[<i class="fab fa-twitter"></i> @xceed](https://twitter.com/datagrid){: .btn .btn--twitter}

[<i class="fa-brands fa-bluesky"/> Bluesky](https://bsky.app/profile/dennisdoomen.com){: .btn .btn--bluesky}

[<i class="fab fa-twitter"></i> @ddoomen](https://twitter.com/ddoomen){: .btn .btn--twitter}

[<i class="fab fa-twitter"></i> @jnyrup](https://twitter.com/jnyrup){: .btn .btn--twitter}

<br/>

<br/>

"There''s a life before Fluent Assertions, and there''s a life after it" [Meisam Alifallahi](https://www.linkedin.com/in/meisam-alifallahi/)

<br/>

<br/>

Fluent Assertions is a very extensive set of extension methods that allow you to more naturally specify the expected outcome of a TDD or

BDD-style unit tests. Works with .NET Standard 2.0 and higher, .NET Framework 4.7 and higher and .NET 6 and higher.

<br/>

<br/>

Versions 8 and beyond are free for open-source projects and non-commercial use, but commercial use requires

a [paid license](https://xceed.com/products/unit-testing/fluent-assertions/).

Check out the [license page](https://github.com/fluentassertions/fluentassertions/blob/main/LICENSE) for more information. Version 7

will remain fully open-source indefinitely and receive bugfixes and other important corrections.

'

feature_row:

- title: "Intention-Revealing Unit Tests"

image_path: /assets/images/binoculars.svg

excerpt: "Write assertions that keep you and your fellow developers out of the debugger hell and clearly communicate what they are trying to accomplish."

btn_label: "Read More"

btn_class: "btn--primary"

url: "/introduction"

- title: "Comprehensive Documentation"

image_path: /assets/images/book.svg

excerpt: "Extensive documentation to help you understand the power of the assertions and learn finding the sweet spot of well-written unit tests."

url: "/introduction"

btn_label: "Read More"

btn_class: "btn--primary"

- title: "Highly <br/> Extensible"

image_path: /assets/images/jigsaws.svg

excerpt: "Many documented extension points and overridable behavior that provides enough flexibility for even the most critical developer."

url: "/extensibility"

btn_label: "Read More"

btn_class: "btn--primary"

feature_row2:

- title: "Feature Complete"

image_path: /assets/images/checklist.svg

excerpt: '

Works with .NET Standard 2.0 and higher, .NET Framework 4.7 and higher and .NET 6 and higher.

Supports MSTest2, MSTest3, MSTest4, xUnit2, xUnit3, NUnit3, NUnit4, MSpec and TUnit.

'

- title: "Great Support"

image_path: /assets/images/customer-service.svg

excerpt: '

Use [<i class="fab fa-stack-overflow"/> StackOverflow](https://stackoverflow.com/questions/tagged/fluent-assertions?mixed=1) for general questions, or

visit [<i class="fab fa-github"/> GitHub](https://github.com/fluentassertions/fluentassertions/issues) for issues & feature requests.

'

- title: "Passionate Team"

image_path: /assets/images/vote.svg

excerpt: '

Originally authored by

[Dennis Doomen](https://github.com/dennisdoomen), but

[Jonas Nyrup](https://github.com/jnyrup) has joined since then. [Xceed](https://www.xceed.com) is now the official partner of Fluent Assertions.

'

feature_row3:

- title: "Community Extensions"

image_path: /assets/images/community.svg

excerpt: 'Broad community support with extensions for

[NewtonSoft.Json](https://github.com/fluentassertions/fluentassertions.json),

[DataSets](https://github.com/fluentassertions/fluentassertions.datasets),

[Web](https://github.com/adrianiftode/FluentAssertions.Web),

[Ninject](https://github.com/kevinkuszyk/FluentAssertions.Ioc.Ninject),

[Autofac](https://github.com/awesome-inc/FluentAssertions.Autofac),

[ASP.NET Core MVC](https://github.com/fluentassertions/fluentassertions.aspnetcore.mvc) and even Roslyn analyzers through

[FluentAssertions.Analyzers](https://github.com/fluentassertions/fluentassertions.analyzers)

'

---

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