7 best C# Assertion libraries in 2024

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by marketing.admin@openweaver.com dot icon Updated: Mar 13, 2023

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C# Assertion is a construct that signals to the calling code that an unexpected event has taken place. It allows programmers to build in sanity checks into their programs, which can then be used to detect when the program is behaving in an unexpected fashion. Assertion libraries are an essential part of a tester's arsenal. They help us to check if our assumptions about the code we write/test are true. They facilitate evaluating the expected and actual results that are intended to be equal. Here are 7 best C# Assertion Open Source libraries that we recommend, shouldly - Should testing for .NET the way Asserting Should be; Verify - snapshot too; fido2-net-lib - NET library for FIDO2 / WebAuthn Attestation and Assertion.

shouldlyby shouldly

C# doticonstar image 1876 doticonVersion:4.2.1doticon
License: Others (Non-SPDX)

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

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            shouldlyby shouldly

            C# doticon star image 1876 doticonVersion:4.2.1doticon License: Others (Non-SPDX)

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

                      C# doticonstar image 1944 doticonVersion:20.2.0doticon
                      License: Permissive (MIT)

                      Verify is a snapshot tool that simplifies the assertion of complex data models and documents.

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                                Verifyby VerifyTests

                                C# doticon star image 1944 doticonVersion:20.2.0doticon License: Permissive (MIT)

                                Verify is a snapshot tool that simplifies the assertion of complex data models and documents.
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                                          fido2-net-libby passwordless-lib

                                          C# doticonstar image 852 doticonVersion:v3.0.1doticon
                                          License: Permissive (MIT)

                                          FIDO2 .NET library for FIDO2 / WebAuthn Attestation and Assertion using .NET

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                                                    fido2-net-libby passwordless-lib

                                                    C# doticon star image 852 doticonVersion:v3.0.1doticon License: Permissive (MIT)

                                                    FIDO2 .NET library for FIDO2 / WebAuthn Attestation and Assertion using .NET
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                                                              NFluentby tpierrain

                                                              C# doticonstar image 300 doticonVersion:v1.2doticon
                                                              License: Permissive (Apache-2.0)

                                                              Smooth your .NET TDD experience with NFluent! NFluent is an ergonomic assertion library which aims to fluent your .NET TDD experience (based on simple Check.That() assertion statements). NFluent aims your tests to be fluent to write (with a super-duper-happy 'dot' auto-completion experience), fluent to read (i.e. as close as possible to plain English expression), but also fluent to troubleshoot, in a less-error-prone way comparing to the classical .NET test frameworks. NFluent is also directly inspired by the awesome Java FEST Fluent assertion/reflection library (http://fest.easytesting.org/)

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                                                                        NFluentby tpierrain

                                                                        C# doticon star image 300 doticonVersion:v1.2doticon License: Permissive (Apache-2.0)

                                                                        Smooth your .NET TDD experience with NFluent! NFluent is an ergonomic assertion library which aims to fluent your .NET TDD experience (based on simple Check.That() assertion statements). NFluent aims your tests to be fluent to write (with a super-duper-happy 'dot' auto-completion experience), fluent to read (i.e. as close as possible to plain English expression), but also fluent to troubleshoot, in a less-error-prone way comparing to the classical .NET test frameworks. NFluent is also directly inspired by the awesome Java FEST Fluent assertion/reflection library (http://fest.easytesting.org/)
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                                                                                  C# doticonstar image 530 doticonVersion:0.10.5doticon
                                                                                  License: Permissive (Apache-2.0)

                                                                                  A C# architecture test library to specify and assert architecture rules in C# for automated testing.

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                                                                                            ArchUnitNETby TNG

                                                                                            C# doticon star image 530 doticonVersion:0.10.5doticon License: Permissive (Apache-2.0)

                                                                                            A C# architecture test library to specify and assert architecture rules in C# for automated testing.
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                                                                                                      Shouldby erichexter

                                                                                                      C# doticonstar image 143 doticonVersion:Currentdoticon
                                                                                                      License: Others (Non-SPDX)

                                                                                                      Should Assertion Library

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                                                                                                                Shouldby erichexter

                                                                                                                C# doticon star image 143 doticonVersion:Currentdoticon License: Others (Non-SPDX)

                                                                                                                Should Assertion Library
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                                                                                                                          fluentassertions.analyzersby fluentassertions

                                                                                                                          C# doticonstar image 88 doticonVersion:v0.19.1doticon
                                                                                                                          License: Permissive (MIT)

                                                                                                                          Analyzers based on the FluentAssertions best practices docs

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                                                                                                                                    fluentassertions.analyzersby fluentassertions

                                                                                                                                    C# doticon star image 88 doticonVersion:v0.19.1doticon License: Permissive (MIT)

                                                                                                                                    Analyzers based on the FluentAssertions best practices docs
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