The NUnitTestAdapter extension works with the Visual Studio Unit Test window to allow integrated test execution under Visual Studio 2012, 2013, 2015 and 2017.
The latest version, 2.0, is based on NUnit 2.6.4 and is compatible with tests developed using NUnit 2.0 through 2.6.4. It supports all versions of VS2012, VS2013, VS2015 and VS2017. You can find the release notes here
For more info about the NUnit Test Adapter see the documentation on the NUnit website
[www.nunit.org](http://www.nunit.org)
Please observe that VSIX test adapters will be deprecated in the upcoming Visual Studio 2019. Please add the nuget adapter package to your solutions instead. See further information here and here