Microsoft.Coyote.Test 1.4.2 The ID prefix of this package has been reserved for one of the owners of this package by Prefix Reserved

.NET 5.0 .NET Core 3.1 .NET Framework 4.6.2
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Install-Package Microsoft.Coyote.Test -Version 1.4.2
dotnet add package Microsoft.Coyote.Test --version 1.4.2
<PackageReference Include="Microsoft.Coyote.Test" Version="1.4.2" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add Microsoft.Coyote.Test --version 1.4.2
The NuGet Team does not provide support for this client. Please contact its maintainers for support.
#r "nuget: Microsoft.Coyote.Test, 1.4.2"
#r directive can be used in F# Interactive, C# scripting and .NET Interactive. Copy this into the interactive tool or source code of the script to reference the package.
// Install Microsoft.Coyote.Test as a Cake Addin
#addin nuget:?package=Microsoft.Coyote.Test&version=1.4.2

// Install Microsoft.Coyote.Test as a Cake Tool
#tool nuget:?package=Microsoft.Coyote.Test&version=1.4.2
The NuGet Team does not provide support for this client. Please contact its maintainers for support.

<div align="center"> <h2><img src="docs/assets/images/logo_coyote.svg" width="70%"></h2> </div>

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CodeQL Build and Test CI

Coyote is a .NET library and tool designed to help ensure that your code is free of concurrency bugs.

It gives you the ability to reliably unit test the concurrency and other sources of nondeterminism (such as message re-orderings, timeouts and failures) in your C# code. In the heart of Coyote is a scheduler that takes control (via binary rewriting) of your program's execution during testing and is able to systematically explore the concurrency and nondeterminism to find safety and liveness bugs. The awesome thing is that once Coyote finds a bug it gives you the ability to fully reproduce it as many times as you want, making debugging and fixing the issue much easier.

Coyote is used by several teams in Azure to systematically test their distributed systems and services, finding hundreds of bugs before they manifest in production. In the words of an Azure service architect:

Coyote found several issues early in the dev process, this sort of issues that would usually bleed through into production and become very expensive to fix later.

See our documentation for more information about the project, case studies, tutorials and reference documentation.

Coyote is made with ❤️ by Microsoft Research.


This project welcomes contributions and suggestions. Most contributions require you to agree to a Contributor License Agreement (CLA) declaring that you have the right to, and actually do, grant us the rights to use your contribution. For details, visit

When you submit a pull request, a CLA bot will automatically determine whether you need to provide a CLA and decorate the PR appropriately (e.g., status check, comment). Simply follow the instructions provided by the bot. You will only need to do this once across all repositories using our CLA.

Code of Conduct

This project has adopted the Microsoft Open Source Code of Conduct. For more information see the Code of Conduct FAQ or contact with any additional questions or comments.

Product Versions
.NET net5.0 net5.0-windows net6.0 net6.0-android net6.0-ios net6.0-maccatalyst net6.0-macos net6.0-tvos net6.0-windows
.NET Core netcoreapp3.1
.NET Framework net462 net463 net47 net471 net472 net48
Compatible target framework(s)
Additional computed target framework(s)
Learn more about Target Frameworks and .NET Standard.

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories (1)

Showing the top 1 popular GitHub repositories that depend on Microsoft.Coyote.Test:

Repository Stars
Coyote is a testing library and tool that helps ensure that your C# code is free of annoying concurrency bugs.
Version Downloads Last updated
1.5.4 125 4/26/2022
1.5.3 231 4/2/2022
1.4.3 354 2/8/2022