Top 20 NuGet test Packages

Unittest object for injection
FakeHttpMessageHandler seamlessly fakes http request sent from System.Net.Http.HttpClient for purpose of unit testing code that previously could only be integration tested.
Helper functions for opening test data files. Handles tests running under Live Unit Testing.
A library for creating Behavioral-Driven (Given-When-Then) tests for MicroServices built with the Kingo.MicroServices package.
Easy to use, small, SignalR Core unit testing support with xUnit and Moq. Check my github for NUnit or MSTest version.
This library contains some test helpers which we regularly use in our test projects.
Mocklis is a library and source code generator for .net, targeted at generating test doubles from interfaces. This is a meta-package referencing both the library and the code generator.
Search web elements by anchors, i.e. "anchor `First Name` search <input>", "Sign In", "parent `Is this true?` anchor <label> `Yes` search <button/span>", etc., more intuitive and easier than traditonal methods (xpath, css selector, id, name, class name, link, etc.), making Web UI automation testing ...
Implementation for automated testing using Xunit and AspNetCore
Implementation for automated testing using Xunit
Tesults NUnit library for uploading test results data to Tesults from NUnit 3 tests.
Class library to simplify test-setups.
Run all of your MSTest assert statements and have each failure message reported summarily.
Implementation for automated testing using Xunit and AspNetCore
Implementation for automated testing using Xunit
Implementation for automated testing using Xunit and AspNetCore
Traced Test Extension (TTE) is an extension to major testing frameworks. It extends their capabilities to record and assert the events provided by Event Tracing for Windows (ETW).
Traced Test Extension (TTE) is an extension to major testing frameworks. It extends their capabilities to record and assert the events provided by Event Tracing for Windows (ETW).
AssertJ style fluent assertions for .NET unit testing frameworks.