A list of paid, free or open source C# and .NET Testing libraries, plugins and tools for architecture testing, mock testing, fake data testing, behaviour driven testing, unit testing, web automation and natural language testing. Sourced under a creative commons. This list will be updated regularly. Email over the URL, if you wish to be included.

C# and .NET testing libraries, plugins and tools for architecture testing, mock testing, fake data testing, behaviour driven testing, unit testing, web automation and natural language testing

• ArchUnitNET – Simple library for checking the architecture of C# code with a fluent API.
• NetArchTest – A fluent API for .Net Standard that can enforce architectural rules in unit tests.
• AutoFixture – AutoFixture is an open source framework for .NET designed to minimize the ‘Arrange’ phase of your unit tests
• BDTest – A behaviour driven testing and reporting framework!
• BDDfy – BDDfy is the simplest BDD framework EVER!
• Bogus – A simple and sane fake data generator for C#. Based on and ported from the famed faker.js.
• ExpressionToCode – Use plain C# syntax in assertions that include both the expression expression and subexpression values in the failure message.
• FakeItEasy – The easy mocking library for .NET https://fakeiteasy.github.io
• Fluent Assertions – A set of .NET extension methods that allow you to more naturally specify the expected outcome of a TDD or BDD-style test
• FluentAutomation – Simple Fluent API for UI Automation
• FsCheck – Random Testing for .NET.
• Fuchu – A unit-testing library for F# with tests-as-values which makes DSLs extremely easy to create.
• Machine.Specifications – Machine.Specifications (MSpec) is a context/specification framework that removes language noise and simplifies tests.
• Moq – The most popular and friendly mocking framework for .NET
• Moq.Contrib.HttpClient – A set of extension methods for mocking HttpClient and IHttpClientFactory with Moq.
• NBomber – Very simple load testing framework for Pull and Push scenarios. It’s 100% written in F# and targeting .NET Core and full .NET Framework.
• NBuilder – Rapid generation of test objects
• NCrunch – An automated continuous & concurrent testing tool for Visual Studio. [$]
• NFluent – NFluent is an assertion library which aims to fluent your .NET TDD experience.
• NSubstitute – A friendly substitute for .NET mocking frameworks
• NUnit – A unit-testing framework for all .NET languages
• Rhino Mocks – Dynamic Mocking Framework for .NET
• Testcontainers – A library to support tests with throwaway instances of Docker containers for all compatible .NET Standard versions.
• SecTester – SecTester is a new tool that integrates Bright enterprise-grade scan engine directly into your integration or e2e tests. [Proprietary] [Free]
• Shouldly – Shouldly is an assertion framework which focuses on giving great error messages when the assertion fails while being simple and terse.
• Snapshooter – A snapshot testing tool for .NET Core and .NET Framework
• SpecFlow – Binding business requirements to .Net code
• Stryker.NET – Mutation testing for .NET Core projects
• xBehave.net – An xUnit.net extension for describing your tests using natural language.
• xUnit.net – A free, open source, community-focused unit testing tool for the .NET Framework.
• Canopy – Canopy is a free, open source F# web automation and testing framework
• Expecto – A smooth testing framework for F# with tests as values. Unit testing, property based testing, performance testing and stress testing.
• ReportPortal – AI-powered Test Automation Dashboard. Acquire, aggregate and analyze test reports to ascertain release health.
• Compare-Net-Objects – Perform a deep compare of any two .NET objects using reflection. Shows the differences between the two objects.
• Verify – Verification tool to enable simple approval of complex models and documents.
• CsCheck – Random testing library for C#. Including concurrency, causal profiling, regression and performance testing.

Tags: c#, open source, f#, .net, c# tools, c# plugins, c# libraries, .net tools, .net plugins, .net libraries, asp.net tools, asp.net plugins, asp.net libraries, architecture testing, mock testing, fake data testing, behaviour driven testing, unit testing, web automation and natural language testing

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