In the Add New Project dialog in Visual Studio 2017, under the Test node on the left, you'll find four choices. You want the xUnit project -- cleverly called xUnit Test Project (.NET Core). That ...

The recently released, Visual Studio Unit Test Generator includes support for multiple test framework and enables you to unit test applications directly from within Visual Studio 2012 and 2013.

Here’s how to work with xUnit.net in Visual Studio. For this demonstration, we will be using Visual Studio 2015, although you can work with other compatible versions of Visual Studio as well.