FakeItEasy Alternatives

Moq

Discontinued Repo for managing Moq 4.x [Moved to: https://github.com/moq/moq]

NSubstitute

A friendly substitute for .NET mocking libraries.

AutoFixture

AutoFixture is an open source library for .NET designed to minimize the 'Arrange' phase of your unit tests in order to maximize maintainability. Its primary goal is to allow developers to focus on what is being tested rather than how to setup the test scenario, by making it easier to create object graphs containing test data.

TodoApp

Todo application with ASP.NET Core Blazor WASM, Minimal APIs and Authentication

Shouldly

Should testing for .NET—the way assertions should be!

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 4.7, as well as .NET Core 2.1, .NET Core 3.0, .NET 6, .NET Standard 2.0 and 2.1. Supports the unit test frameworks MSTest2, NUnit3, XUnit2, MSpec, and NSpec3.

Bogus

:card_index: A simple fake data generator for C#, F#, and VB.NET. Based on and ported from the famed faker.js.

Dapper.QX

More powerful and testable inline SQL used with Dapper

NUnit

NUnit Framework

xUnit

xUnit.net is a free, open source, community-focused unit testing tool for .NET.

Rhino Mocks

WireMock.Net

WireMock.Net is a flexible product for stubbing and mocking web HTTP responses using advanced request matching and response templating. Based on the functionality from http://WireMock.org, but extended with more functionality.