A unit is the smallest testable part of the software. Unit testing is a technique of software testing where individual modules/units are tested. The primary purpose of unit testing is to isolate and validate each unit of the application and fix the bugs.
- Makes the coding process more Agile.
- Improves the quality of the code and issues are found at an early stage.
- Bugs are found early, so it reduces the cost of bug fixes.
- Improves design and allows better refactoring of code.
There are a lot of unit testing libraries/frameworks available which helps you integrate unit testing into your application.
In this article, we will discuss the top 10 Unit Testing libraries, or you can say the most useful libraries which are used in 2017.
1. NUnit By charliepoole
NUnit is a unit-testing framework for all .Net languages. Initially ported from JUnit, the current production release, version 3, has been completely rewritten with many new features and support for a wide range of .NET platforms.
For further details, you can visit http://nunit.org/
2. xUnit By bradwilson
xUnit.net is a free, open source, community-focused unit testing tool for the .NET Framework. It is a developer testing framework, built to support Test Driven Development, with a design goal of extreme simplicity and alignment with framework features.
For further details, you can visit https://github.com/xunit/xunit
3. FluentAssertions By dennisdoomen
A very extensive set of extension methods that allow you to more naturally specify the expected outcome of a TDD or BDD-style unit test.
Fluent Assertions supports the following unit test frameworks:
- MSTest (Visual Studio 2010, 2012 Update 2, 2013 and 2015)
- MSTest2 (Visual Studio 2017)
For further details, you can visit http://fluentassertions.com/
4. Moq By kzu & clariuslabs
Moq is a third party library/framework that enables you to create the dummy class and its methods’ dummy implementation without actually creating a class with actual method implementation.
For further details, you can visit https://github.com/moq/moq4
5. NSubstitute By davetchepak
NSubstitute is a friendly substitute for .NET mocking frameworks. It has a simple, succinct syntax to help developers write clearer tests. NSubstitute is designed for Arrange-Act-Assert (AAA) testing and with Test Driven Development (TDD) in mind.
For further details, you can visit http://nsubstitute.github.io/
FakeItEasy is a .Net dynamic fake framework for creating all types of fake objects, mocks, stubs, etc.
- Easier semantics, all fake objects are just that - fakes - the use of the fakes determines whether they're mocks or stubs.
- Context-aware fluent interface guides the developer.
- Designed for ease of use.
- Full compatibility with both C# and VB.Net.
For further details, you can visit https://fakeiteasy.github.io/
7. Chutzpah By mmanela
For further details, you can visit https://github.com/mmanela/chutzpah
8. Flurl.Http By tmenier
- Flurl is a modern, fluent, asynchronous, testable, portable, buzzword-laden URL builder and HTTP client library.
- With a discoverable API, extensibility at every turn, and a nifty set of testing features, Flurl is intended to make building and calling URLs easy and downright fun.
For further details, you can visit http://tmenier.github.io/Flurl/
9. Bogus By bchavez >
A sane and straightforward data generator for populating objects that supports different locales. A delightful port of the famed faker.js and inspired by FluentValidation. Use it to create and load databases and UIs with mock-up data. Get started by using Faker class or a DataSet directly.
For further details, you can visit https://github.com/bchavez/Bogus
10. NUnitLite By charliepoole
NUnitLite provides a simple way to run NUnit tests, without the overhead of a full NUnit installation. It is suitable for projects that want to have a quick way to run tests using a console runner and don't need all the features of the NUnit engine and console runner.