Evolving the Visual Studio Test Platform - Part 3: .NET Core, convergence, and cross-plat

This post details the convergence of the .NET Core testing experience with the Visual Studio Test Platform. It explains that the evolved vstest engine (Microsoft.TestPlatform.V2) is now cross-platform and leveraged by `dotnet test`. It also highlights that adapter writers can maintain a single adapter for both .NET Framework and .NET Core, citing MSTest V2 and xUnit.net as examples. The post demonstrates testing using the Visual Studio IDE, `vstest.console.exe`, the .NET Core CLI (`dotnet test`), and VSTS build agents, showing how the same adapters and invocation models work across different environments.