xUnit Roslyn Analyzers 

How to build a .NET Core Project with VS Code ? 

Live Unit Testing in Visual Studio 2017  

As promised , we announced the open sourcing of MSTest Test Framework “MSTest V2”. The community now has a fully supported, open source, cross-platform implementation of the MSTest V2 portfolio with which to write tests targeting .NET Framework, .NET Core and ASP.NET Core on Windows, Linux, and Mac. 

Open sourcing the MSTest Test Framework 

VSTest is a very extensible unit test execution framework.  The base engine, discovers tests and runs them.  It can parallelize across cores, provides process isolation and can integrate with Visual Studio.  It has extensibility for different test frameworks, code coverage, test impact analysis, data collection, test result reporting and much more. 

JavaScript is a dynamically typed language which comes with great power of expression, but it also comes with almost no help from the compiler. For this reason we feel very strongly that any code written in JavaScript needs to come with a strong set of tests. We have built many features into Angular which make testing your Angular applications easy. With Angular, there is no excuse for not testing. 

The anatomy of robust unit testing (with examples in C#) 

[Test]
public void ReturnOkWhenCallingGetAction()
{
    MyWebApi
        .Controller<HomeController>()
        .Calling(c => c.Get())
        .ShouldReturn()
        .Ok();
}