FsCheck.NUnit 3.4.0

.NET 6.0 This package targets .NET 6.0. The package is compatible with this framework or higher. 
dotnet add package FsCheck.NUnit --version 3.4.0
                    


                    

                
NuGet\Install-Package FsCheck.NUnit -Version 3.4.0
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package. 
<PackageReference Include="FsCheck.NUnit" Version="3.4.0" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="FsCheck.NUnit" Version="3.4.0" />
                    


                            Directory.Packages.props
                        

                    

                
<PackageReference Include="FsCheck.NUnit" />
                    


                            Project file
For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package. 
paket add FsCheck.NUnit --version 3.4.0
                    


                    

                
#r "nuget: FsCheck.NUnit, 3.4.0"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package. 
#:package FsCheck.NUnit@3.4.0
#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package. 
#addin nuget:?package=FsCheck.NUnit&version=3.4.0
                    


                            Install as a Cake Addin
                        

                    

                
#tool nuget:?package=FsCheck.NUnit&version=3.4.0
                    


                            Install as a Cake Tool

FsCheck.NUnit

FsCheck.NUnit integrates FsCheck with NUnit by adding a FsCheckPropertyAttribute that runs FsCheck tests, similar to NUnit's TestAttribute.

Quick Start

Install via NuGet:

dotnet add package FsCheck.NUnit

Define a test class with FsCheck properties:

open NUnit.Framework
open FsCheck
open FsCheck.NUnit

[<TestFixture>]
type ListProperties() =
    [<FsCheckProperty>]
    member _.``Reverse of reverse is identity`` (xs:list<int>) =
        List.rev(List.rev xs) = xs

    [<FsCheckProperty>]
    member _.``List length unchanged after reverse`` (xs:list<int>) =
        List.length (List.rev xs) = List.length xs

Or in C#:

using NUnit.Framework;
using FsCheck;
using FsCheck.NUnit;

[TestFixture]
public class ListProperties
{
    [FsCheckProperty]
    public void ReverseOfReverseIsIdentity(int[] xs)
    {
        Assert.AreEqual(xs, xs.Reverse().Reverse());
    }
}

Features

  • FsCheckPropertyAttribute for easy integration with NUnit test discovery
  • Automatic test case generation using FsCheck
  • Full configuration support via attribute parameters
  • Shrinking for minimal counter-examples

Configuration

Configure FsCheck via the FsCheckPropertyAttribute:

[<FsCheckProperty(MaxTest = 10000, StartSize = 100, EndSize = 1000)>]
member _.``Custom configuration`` (xs:list<int>) = true

Documentation

For comprehensive documentation, visit https://fscheck.github.io/FsCheck/

License

FsCheck.NUnit is licensed under the BSD 3-Clause license.

Product Compatible and additional computed target framework versions.
.NET net6.0 is compatible.  net6.0-android was computed.  net6.0-ios was computed.  net6.0-maccatalyst was computed.  net6.0-macos was computed.  net6.0-tvos was computed.  net6.0-windows was computed.  net7.0 was computed.  net7.0-android was computed.  net7.0-ios was computed.  net7.0-maccatalyst was computed.  net7.0-macos was computed.  net7.0-tvos was computed.  net7.0-windows was computed.  net8.0 was computed.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed.  net9.0 was computed.  net9.0-android was computed.  net9.0-browser was computed.  net9.0-ios was computed.  net9.0-maccatalyst was computed.  net9.0-macos was computed.  net9.0-tvos was computed.  net9.0-windows was computed.  net10.0 was computed.  net10.0-android was computed.  net10.0-browser was computed.  net10.0-ios was computed.  net10.0-maccatalyst was computed.  net10.0-macos was computed.  net10.0-tvos was computed.  net10.0-windows was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages (4)

Showing the top 4 NuGet packages that depend on FsCheck.NUnit:

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Package Description

GitHub repositories (2)

Showing the top 2 popular GitHub repositories that depend on FsCheck.NUnit:

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Version Downloads Last Updated
3.4.0 214 8/20/2026
3.3.4 14,278 7/25/2026
3.3.3 72,168 4/26/2026
3.3.2 132,509 11/9/2025
3.3.1 34,401 8/24/2025
3.3.0 49,532 6/3/2025
3.2.0 29,709 4/10/2025
3.1.0 50,142 1/30/2025
3.0.1 17,904 1/22/2025
3.0.0 13,898 1/7/2025
3.0.0-rc3 40,788 3/3/2024
3.0.0-rc2 375 2/25/2024
3.0.0-rc1 10,907 7/23/2023
3.0.0-beta2 12,709 1/8/2022
3.0.0-beta1 1,515 9/5/2021
2.16.6 327,104 7/1/2023
2.16.5 163,826 6/1/2022
2.16.4 208,274 1/8/2022
2.16.3 34,779 9/4/2021
2.16.2 1,861 8/30/2021
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Updated xunit.v3 to version 4.x. (by Simon Baynes)