fluentassertions 

FluentAssertions by: dennisdoomen fluentassertions
Fluent Assertions
A very extensive set of extension methods that allow you to more naturally specify the expected outcome of a TDD or BDD-style unit tests. Targets .NET Framework 4.5 and 4.7, as well as .NET Core 2.0, .NET Standard 1.3, 1.6 and 2.0. Supports the unit test frameworks MSTest, MSTest2,... More information