NSubstitute 5.1.0

Prefix Reserved
dotnet add package NSubstitute --version 5.1.0                
NuGet\Install-Package NSubstitute -Version 5.1.0                
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="NSubstitute" Version="5.1.0" />                
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add NSubstitute --version 5.1.0                
#r "nuget: NSubstitute, 5.1.0"                
#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.
// Install NSubstitute as a Cake Addin
#addin nuget:?package=NSubstitute&version=5.1.0

// Install NSubstitute as a Cake Tool
#tool nuget:?package=NSubstitute&version=5.1.0                

NSubstitute is a friendly substitute for .NET mocking libraries. It has a simple, succinct syntax to help developers write clearer tests. NSubstitute is designed for Arrange-Act-Assert (AAA) testing and with Test Driven Development (TDD) in mind.

Product Compatible and additional computed target framework versions.
.NET net5.0 was computed.  net5.0-windows was computed.  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. 
.NET Core netcoreapp2.0 was computed.  netcoreapp2.1 was computed.  netcoreapp2.2 was computed.  netcoreapp3.0 was computed.  netcoreapp3.1 was computed. 
.NET Standard netstandard2.0 is compatible.  netstandard2.1 was computed. 
.NET Framework net461 was computed.  net462 is compatible.  net463 was computed.  net47 was computed.  net471 was computed.  net472 was computed.  net48 was computed.  net481 was computed. 
MonoAndroid monoandroid was computed. 
MonoMac monomac was computed. 
MonoTouch monotouch was computed. 
Tizen tizen40 was computed.  tizen60 was computed. 
Xamarin.iOS xamarinios was computed. 
Xamarin.Mac xamarinmac was computed. 
Xamarin.TVOS xamarintvos was computed. 
Xamarin.WatchOS xamarinwatchos was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages (197)

Showing the top 5 NuGet packages that depend on NSubstitute:

Package Downloads

This extension turns AutoFixture into an Auto-Mocking Container. The mock instances are created by NSubstitute. To use it, add the AutoNSubstituteCustomization to your Fixture instance.


Extension for mocking Entity Framework Core operations such ToListAsync, FirstOrDefaultAsync etc. When writing tests for your application it is often desirable to avoid hitting the database. The extension allows you to achieve this by creating a context – with behavior defined by your tests – that makes use of in-memory data.


Some generic test utilites.


FunFair Common Test Infrastructure for building xUnit tests on top of.


Package Description

GitHub repositories (386)

Showing the top 5 popular GitHub repositories that depend on NSubstitute:

Repository Stars
.NET MAUI is the .NET Multi-platform App UI, a framework for building native device applications spanning mobile, tablet, and desktop.
.NET Decompiler with support for PDB generation, ReadyToRun, Metadata (&more) - cross-platform!
Clean Architecture Solution Template: A starting point for Clean Architecture with ASP.NET Core
Bitwarden infrastructure/backend (API, database, Docker, etc).
Polly is a .NET resilience and transient-fault-handling library that allows developers to express policies such as Retry, Circuit Breaker, Timeout, Bulkhead Isolation, and Fallback in a fluent and thread-safe manner. From version 6.0.1, Polly targets .NET Standard 1.1 and 2.0+.
Version Downloads Last updated
5.1.0 15,002,966 9/11/2023
5.0.0 9,747,672 2/12/2023
4.4.0 11,039,368 7/10/2022
4.3.0 10,253,049 1/24/2022
4.2.2 25,506,498 6/13/2020
4.2.1 14,386,540 7/15/2019
4.2.0 2,301,808 5/19/2019
4.1.0 815,957 5/5/2019
4.0.0 3,501,353 1/30/2019
3.1.0 12,999,426 10/27/2017
3.0.1 485,260 10/8/2017
2.0.3 8,180,455 4/25/2017
1.10.0 3,716,551 3/22/2016
1.9.2 1,384,381 10/22/2015
1.9.1 512,143 9/30/2015
1.8.2 1,061,389 5/29/2015
1.8.1 857,480 12/26/2014
1.8.0 144,753 11/11/2014
1.7.2 585,568 3/4/2014
1.7.1 222,600 1/16/2014
1.7.0 44,680 1/3/2014
1.6.1 291,782 6/30/2013
1.6.0 143,912 4/19/2013
1.5.0 344,288 1/25/2013
1.4.3 70,476 8/15/2012
1.4.2 29,774 7/1/2012
1.4.1 5,018 6/28/2012
1.4.0 53,329 5/4/2012
1.3.0 44,687 11/22/2011
1.2.1 10,167 10/10/2011
1.2.0 5,737 9/29/2011
1.1.0 44,959 5/21/2011
1.0.0 73,473 5/17/2011