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11 best C# Mock libraries in 2023

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by Open Weaver kits ✔ dot icon Updated: Mar 13, 2023

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Mocking is the act of replacing a function with a fake copy and optionally, configuring it to return some predefined data. The primary use case for mocking is unit testing. Mocking frameworks allow you to replace a specific call to a class or method with a behavior you define. Thanks to this ability, you can easily test units of code in isolation without messing up their dependencies These are the 11 best C# Mock libraries in 2022, NSubstitute - A friendly substitute for .NET mocking libraries; FakeItEasy - The easy mocking library for .NET; WireMock.Net - flexible library; pact-net - .NET version of Pact; moq.spikes - The most popular and friendly mocking framework for .NET.

NSubstituteby nsubstitute

C# doticonstar image 1952 doticonVersion:v5.0.0doticon
License: Others (Non-SPDX)

A friendly substitute for .NET mocking libraries.

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            NSubstituteby nsubstitute

            C# doticon star image 1952 doticonVersion:v5.0.0doticon License: Others (Non-SPDX)

            A friendly substitute for .NET mocking libraries.
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                      FakeItEasyby FakeItEasy

                      C# doticonstar image 1406 doticonVersion:7.3.1doticon
                      License: Permissive (MIT)

                      The easy mocking library for .NET

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                                FakeItEasyby FakeItEasy

                                C# doticon star image 1406 doticonVersion:7.3.1doticon License: Permissive (MIT)

                                The easy mocking library for .NET
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                                          WireMock.Netby WireMock-Net

                                          C# doticonstar image 1103 doticonVersion:1.5.26doticon
                                          License: Permissive (Apache-2.0)

                                          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.

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                                                    WireMock.Netby WireMock-Net

                                                    C# doticon star image 1103 doticonVersion:1.5.26doticon License: Permissive (Apache-2.0)

                                                    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.
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                                                              pact-netby pact-foundation

                                                              C# doticonstar image 712 doticonVersion:4.6.0-beta.1doticon
                                                              License: Permissive (MIT)

                                                              .NET version of Pact. Enables consumer driven contract testing, providing a mock service and DSL for the consumer project, and interaction playback and verification for the service provider project.

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                                                                        pact-netby pact-foundation

                                                                        C# doticon star image 712 doticonVersion:4.6.0-beta.1doticon License: Permissive (MIT)

                                                                        .NET version of Pact. Enables consumer driven contract testing, providing a mock service and DSL for the consumer project, and interaction playback and verification for the service provider project.
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                                                                                  moqby moq

                                                                                  C# doticonstar image 714 doticonVersion:Currentdoticon
                                                                                  License: Permissive (MIT)

                                                                                  The most popular and friendly mocking framework for .NET

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                                                                                            moqby moq

                                                                                            C# doticon star image 714 doticonVersion:Currentdoticon License: Permissive (MIT)

                                                                                            The most popular and friendly mocking framework for .NET
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                                                                                                      MockQueryableby romantitov

                                                                                                      C# doticonstar image 599 doticonVersion:v7.0doticon
                                                                                                      License: Permissive (MIT)

                                                                                                      Mocking Entity Framework Core operations such ToListAsync, FirstOrDefaultAsync etc

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                                                                                                                MockQueryableby romantitov

                                                                                                                C# doticon star image 599 doticonVersion:v7.0doticon License: Permissive (MIT)

                                                                                                                Mocking Entity Framework Core operations such ToListAsync, FirstOrDefaultAsync etc
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                                                                                                                          rhino-mocksby ayende

                                                                                                                          C# doticonstar image 254 doticonVersion:Currentdoticon
                                                                                                                          License: Permissive (BSD-3-Clause)

                                                                                                                          Dynamic Mocking Framework for .NET

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                                                                                                                                    rhino-mocksby ayende

                                                                                                                                    C# doticon star image 254 doticonVersion:Currentdoticon License: Permissive (BSD-3-Clause)

                                                                                                                                    Dynamic Mocking Framework for .NET
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                                                                                                                                              moq.spikesby moq

                                                                                                                                              C# doticonstar image 251 doticonVersion:Currentdoticon
                                                                                                                                              License: Permissive (Apache-2.0)

                                                                                                                                              The most popular and friendly mocking framework for .NET

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                                                                                                                                                        moq.spikesby moq

                                                                                                                                                        C# doticon star image 251 doticonVersion:Currentdoticon License: Permissive (Apache-2.0)

                                                                                                                                                        The most popular and friendly mocking framework for .NET
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                                                                                                                                                                  Moq.AutoMockerby moq

                                                                                                                                                                  C# doticonstar image 334 doticonVersion:v3.5.0doticon
                                                                                                                                                                  License: Permissive (MIT)

                                                                                                                                                                  An auto-mocking IoC container for Moq

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                                                                                                                                                                            Moq.AutoMockerby moq

                                                                                                                                                                            C# doticon star image 334 doticonVersion:v3.5.0doticon License: Permissive (MIT)

                                                                                                                                                                            An auto-mocking IoC container for Moq
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                                                                                                                                                                                      AutoMoqby darrencauthon

                                                                                                                                                                                      C# doticonstar image 161 doticonVersion:2.0.0doticon
                                                                                                                                                                                      License: Permissive (MIT)

                                                                                                                                                                                      Auto mocking provider for Moq.

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                                                                                                                                                                                                AutoMoqby darrencauthon

                                                                                                                                                                                                C# doticon star image 161 doticonVersion:2.0.0doticon License: Permissive (MIT)

                                                                                                                                                                                                Auto mocking provider for Moq.
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                                                                                                                                                                                                          entity-framework-core-mockby cup-of-tea-dot-be

                                                                                                                                                                                                          C# doticonstar image 85 doticonVersion:Currentdoticon
                                                                                                                                                                                                          License: Permissive (MIT)

                                                                                                                                                                                                          Easy Mock wrapper for mocking EFCore5 DbContext and DbSet using Moq or NSubstitute

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                                                                                                                                                                                                                    entity-framework-core-mockby cup-of-tea-dot-be

                                                                                                                                                                                                                    C# doticon star image 85 doticonVersion:Currentdoticon License: Permissive (MIT)

                                                                                                                                                                                                                    Easy Mock wrapper for mocking EFCore5 DbContext and DbSet using Moq or NSubstitute
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