TestGenerator Extension for NUnit in Visual Studio Installation
You can download this extension from inside Visual Studio, choosing Tools/Extensions and Updates and search for Test Generator. You will then find the appropriate extension for VS 2015 or VS 2017/2019.
For Visual Studio 2022
You can download from the marketplace Visual Studio Gallery or from the GitHub Release page
For Visual Studio 2017/2019
You can download from the marketplace Visual Studio Gallery or from the GitHub Release page
For Visual Studio 2015
You can download from the marketplace Visual Studio Gallery or from the GitHub Release page