Fluent API for asserting the results of unit tests that targets .NET Framework 4.5, 4.7, .NET Standard 1.3, 1.6 and 2.0. Supports the unit test frameworks MSTest, MSTest2, Gallio, NUnit, XUnit, MBunit, MSpec, and NSpec.
NUnit 3 Framework
xUnit.net is a free, open source, community-focused unit testing tool for the .NET Framework.
Should testing for .NET - the way Asserting *Should* be!
Samples for xUnit.net (please open issues in https://github.com/xunit/xunit)
List of Automated Testing (TDD/BDD/ATDD/SBE) Tools and Frameworks for .NET
Modern Testing for .NET
Easy integration testing helper for ASP.Net Core applications