---
title: "Fluent Assertions"
layout: splash
date: 2016-03-23T11:48:41-04:00
header:
  overlay_color: "#373737"
  overlay_filter: "0.7"
  overlay_image: "/assets/images/fluent_assertions_large_horizontal.svg"
  cta_label: "Get 5.7.0 with .NET Core 3.0 support and a motherload of novelties and fixes"
  cta_url: "/releases/#570"
  caption: "Logo by [**IUserName**](https://github.com/IUsername) <br/>Icons  by [**Zlatko Najdenovski**](https://www.flaticon.com/authors/zlatko-najdenovski) from [Flaticon](https://www.flaticon.com/)"
excerpt: '_With Fluent Assertions, the assertions look beautiful, natural and most  importantly, extremely readable_ - [Girish](https://twitter.com/girishracharya) <br/>
  _everyone.Should().Like(FluentAssertions, "because everything is so damn cool and readable");_ - [Jim Speaker](https://twitter.com/jspeaker) and [Bart Roozendaal](https://twitter.com/BartRoozendaal)<br/>
 <br />
![](https://img.shields.io/nuget/dt/FluentAssertions.svg?style=for-the-badge)
[![](https://img.shields.io/github/release/fluentassertions/fluentassertions.svg?style=for-the-badge&label=Latest)](https://github.com/fluentassertions/fluentassertions/releases/latest)
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'
intro:
  - excerpt: '
     [Follow me <i class="fab fa-twitter"></i> @ddoomen](https://twitter.com/ddoomen){: .btn .btn--twitter}
     [Follow me <i class="fab fa-twitter"></i> @jnyrup](https://twitter.com/jnyrup){: .btn .btn--twitter}
     [<i class="fab fa-paypal"></i> Tip Us](https://paypal.me/fluentassertions){: .btn .btn--paypal}
     [<i class="fab fa-patreon"></i> Sponser Us](https://www.patreon.com/bePatron?u=9250052&redirect_uri=http%3A%2F%2Ffluentassertions.com%2F&utm_medium=widget){: .btn .btn--patreon}
     [<i class="fas fa-money-check"></i> Wire Us](mailto:dennis.doomen@avivasolutions.nl?subject=Support%20Fluent%20Assertions){: .btn .btn--rabobank}
     <br/>
     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. Targets .NET Framework 4.5 and 4.7, as well as .NET Core 2.0, .NET Core 3.0, .NET Standard 1.3, 1.6 and 2.0.'
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: '
**Targets** .NET 4.5, .NET 4.7, .NET Core 2.0, .NET Standard 1.3, 1.6 and 2.0.
**Compatible** .NET Core 3.0
**Supports** MSTest, xUnit, NUnit, Gallio, MBUnit, MSpec and NSpec.
Parses the C# code to **identify** the subject-under-test.
Allows asserting the **equivalency** of (collections of ) deep object graphs.
  Fully **thread-safe**.
    '
  - title: "Great Support"
    image_path: /assets/images/customer-service.svg
    excerpt: '
    [<i class="fab fa-stack-overflow"/> StackOverflow](https://stackoverflow.com/questions/tagged/fluent-assertions?mixed=1){: .btn .btn--stackoverflow} <br/>
    for general questions<br/><br/>

    [<i class="fab fa-slack"/> Slack](https://fluentassertionsslack.herokuapp.com/){: .btn .btn--primary} <br/>
    to contact the team directly<br/><br/>

    [<i class="fab fa-github"/> Github](https://github.com/fluentassertions/fluentassertions/issues){: .btn .btn--github} <br>
    for issues & feature requests<br/><br/>

    '
  - title: "Active Development"
    image_path: /assets/images/vote.svg
    excerpt: '
    **Maintainers** <br/>
    [Dennis Doomen](https://github.com/dennisdoomen) <br/>
    [Jonas Nyrup](https://github.com/jnyrup) <br/>
    <br/>
    **Notable Contributors** <br/>
    [Adam Voss](https://github.com/adamvoss) <br/>
    [Artur Krajewski](https://github.com/krajek) <br/>
    '
feature_row3:
  - title: "Supported By"
    image_path: /assets/images/gift.svg
    excerpt: '
    <div style="display:block; ; text-align:center;">
      <div style="display:block; margin-left: auto; margin-right: auto;">
        <a href="https://www.jetbrains.com/rider/"><img src="/assets/images/jetbrainsrider.svg" style="width:200px"/></a> <br/>
        <br/>
        <a href="https://www.semanticmerge.com/"><img src="/assets/images/semantic-merge.png" style="width:200px"/></a> <br/>
        </div>
    </div>
    '
  - title: "Community Extensions"
    image_path: /assets/images/community.svg
    excerpt: 'Broad community support with extensions for 
    [Json .NET](https://github.com/fluentassertions/fluentassertions.json), 
    [Ninject](https://github.com/kevinkuszyk/FluentAssertions.Ioc.Ninject), 
    [Autofac](https://github.com/awesome-inc/FluentAssertions.Autofac), 
    [ASP.NET MVC](https://github.com/CaseyBurns/FluentAssertions.MVC),
    [ASP.NET Core MVC](https://github.com/fluentassertions/fluentassertions.aspnetcore.mvc) and even Roslyn analyzers through 
    [FluentAssertions.Analyzers](https://github.com/fluentassertions/fluentassertions.analyzers)
    '
  - title: "What People Say"
    image_path: /assets/images/twitter.svg
    twitter: "true"
---

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