FakeItEasy 

It's faking amazing! The easy mocking library for .NET that works great in C# and VB.NET alike. No need to know the difference between a stub, a mock or a spy, everything's a fake! The easy to use, refactoring friendly API makes faking a breeze.

Provides analyzer diagnostics to warn about incorrect usage of FakeItEasy in C#. Works in Visual Studio 2017 version 15.9 or later.

DO NOT INSTALL THIS PACKAGE. It's no longer maintained and does nothing. Use one of the language-specific analyzer packages instead: FakeItEasy.Analyzer.CSharp or FakeItEasy.Analyzer.VisualBasic.

Provides analyzer diagnostics to warn about incorrect usage of FakeItEasy in VB.NET. Works in Visual Studio 2017 version 15.9 or later.

Provides extension methods for configuring methods that return ValueTask or ValueTask<T>.