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11 best C# UI Testing libraries in 2023

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by Open Weaver kits ✔ dot icon Updated: Mar 11, 2023

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Code coverage is a measure of how much source code was tested. It's often used to guide testing activities and can be used to enhance quality. Good code coverage does not guarantee your software is bug-free, but it does determine that your code has been executed during a test run. The most powerful feature of this unit testing framework is that it can be used to test any kind of software, ranging from libraries to web applications. There are lots of unit testing frameworks for .NET developers, but the most popular and reliable ones are xunit - open source, communityfocused unit testing tool; fluentassertions - Fluent API for asserting the results of unit tests; AutoFixture is designed to make Test-Driven Development more productive and unit tests more refactoring-safe.

xunitby xunit

C# doticonstar image 3703 doticonVersion:2.1doticon
License: Others (Non-SPDX)

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

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            xunitby xunit

            C# doticon star image 3703 doticonVersion:2.1doticon License: Others (Non-SPDX)

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

                      C# doticonstar image 3259 doticonVersion:6.11.0doticon
                      License: Permissive (Apache-2.0)

                      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.

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                                fluentassertionsby fluentassertions

                                C# doticon star image 3259 doticonVersion:6.11.0doticon License: Permissive (Apache-2.0)

                                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.
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                                          AutoFixtureby AutoFixture

                                          C# doticonstar image 2992 doticonVersion:v4.18.0doticon
                                          License: Permissive (MIT)

                                          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.

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                                                    AutoFixtureby AutoFixture

                                                    C# doticon star image 2992 doticonVersion:v4.18.0doticon License: Permissive (MIT)

                                                    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.
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                                                              bUnitby bUnit-dev

                                                              C# doticonstar image 889 doticonVersion:v1.20.8doticon
                                                              License: Permissive (MIT)

                                                              bUnit is a testing library for Blazor components that make tests look, feel, and runs like regular unit tests. bUnit makes it easy to render and control a component under test’s life-cycle, pass parameter and inject services into it, trigger event handlers, and verify the rendered markup from the component using a built-in semantic HTML comparer.

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                                                                        bUnitby bUnit-dev

                                                                        C# doticon star image 889 doticonVersion:v1.20.8doticon License: Permissive (MIT)

                                                                        bUnit is a testing library for Blazor components that make tests look, feel, and runs like regular unit tests. bUnit makes it easy to render and control a component under test’s life-cycle, pass parameter and inject services into it, trigger event handlers, and verify the rendered markup from the component using a built-in semantic HTML comparer.
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                                                                                  NetArchTestby BenMorris

                                                                                  C# doticonstar image 853 doticonVersion:v1.3.2doticon
                                                                                  License: Permissive (MIT)

                                                                                  A fluent API for .Net that can enforce architectural rules in unit tests.

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                                                                                            NetArchTestby BenMorris

                                                                                            C# doticon star image 853 doticonVersion:v1.3.2doticon License: Permissive (MIT)

                                                                                            A fluent API for .Net that can enforce architectural rules in unit tests.
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                                                                                                      EfCore.TestSupportby JonPSmith

                                                                                                      C# doticonstar image 311 doticonVersion:V5.3.0doticon
                                                                                                      License: Others (Non-SPDX)

                                                                                                      Tools for helping in unit testing applications that use Entity Framework Core

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                                                                                                                EfCore.TestSupportby JonPSmith

                                                                                                                C# doticon star image 311 doticonVersion:V5.3.0doticon License: Others (Non-SPDX)

                                                                                                                Tools for helping in unit testing applications that use Entity Framework Core
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                                                                                                                          FineCodeCoverageby FortuneN

                                                                                                                          C# doticonstar image 379 doticonVersion:v1.1.191doticon
                                                                                                                          License: Others (Non-SPDX)

                                                                                                                          Visualize unit test code coverage easily for free in Visual Studio Community Edition (and other editions too)

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                                                                                                                                    FineCodeCoverageby FortuneN

                                                                                                                                    C# doticon star image 379 doticonVersion:v1.1.191doticon License: Others (Non-SPDX)

                                                                                                                                    Visualize unit test code coverage easily for free in Visual Studio Community Edition (and other editions too)
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                                                                                                                                              Xamarin.Forms.Mocksby jonathanpeppers

                                                                                                                                              C# doticonstar image 183 doticonVersion:4.7.0.1doticon
                                                                                                                                              License: Permissive (MIT)

                                                                                                                                              Library for running Xamarin.Forms inside of unit tests

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                                                                                                                                                        Xamarin.Forms.Mocksby jonathanpeppers

                                                                                                                                                        C# doticon star image 183 doticonVersion:4.7.0.1doticon License: Permissive (MIT)

                                                                                                                                                        Library for running Xamarin.Forms inside of unit tests
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                                                                                                                                                                  NiceUnitTestingby Promulle

                                                                                                                                                                  C# doticonstar image 0 doticonVersion:Currentdoticon
                                                                                                                                                                  License: Permissive (MIT License)

                                                                                                                                                                  Unit testing tool initialy built for unit testing NiceCore.

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                                                                                                                                                                            NiceUnitTestingby Promulle

                                                                                                                                                                            C# doticon star image 0 doticonVersion:Currentdoticon License: Permissive (MIT License)

                                                                                                                                                                            Unit testing tool initialy built for unit testing NiceCore.
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                                                                                                                                                                                      bcsti-domino-testby felixalguzman

                                                                                                                                                                                      C# doticonstar image 0 doticonVersion:Currentdoticon
                                                                                                                                                                                      License: Others (Non-SPDX)

                                                                                                                                                                                      Barcamp STI - Unit Testing with C#

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                                                                                                                                                                                                bcsti-domino-testby felixalguzman

                                                                                                                                                                                                C# doticon star image 0 doticonVersion:Currentdoticon License: Others (Non-SPDX)

                                                                                                                                                                                                Barcamp STI - Unit Testing with C#
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                                                                                                                                                                                                          Moksterby Stryter

                                                                                                                                                                                                          C# doticonstar image 0 doticonVersion:Currentdoticon
                                                                                                                                                                                                          License: Permissive (MIT License)

                                                                                                                                                                                                          An opinionated view at unit testing with mocks.

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                                                                                                                                                                                                                    Moksterby Stryter

                                                                                                                                                                                                                    C# doticon star image 0 doticonVersion:Currentdoticon License: Permissive (MIT License)

                                                                                                                                                                                                                    An opinionated view at unit testing with mocks.
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