Top 20 NuGet test Packages

General testing tools for projects
Integration testing tools for sql projects
Fualtify Dotnet Mutation Test Commandline Utility
IntegrationTestFramework.Core contains essential definition to preform a successful IntegrationTest
IntegrationTestFramework.TestAdapter executes integration test
The Duraxium diagnostic library provides one class with methods that provide syntactically concise parameter "guard conditions", and another class that provides assertion-checking like the .NET Debug.Assert method, but with extra features.
A console MSTest runner
Performance Benchmarking for .NET
Library for testing Q# programs and algorithms using the xUnit framework.
Method Chaining base UnitTesting Extension Methods and Dynamic Private Accessor for MbUnit. This provides only single .cs file.
Testing Extensions
Testing Extensions
Testing Extensions
An encapsulation of the file system. Makes it easy to fake the file system in your tests.
This is only a sample package published by ficticious company called MyCo.
Generates Lorem Ipsum words for use in tests.
For a full description and getting started guide, please visit http://webinator.codeplex.com/documentation
Library of helpers for testing using the Moq mocking framework
rmocks is a JavaScript mocking framework designed especially for developers familiar with the Rhino Mocks .NET unit testing framework.