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AwesomeAssertions 9.4.0

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A fork of FluentAssertions controlled by the community

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FluentAssertions, up to version 7.x, was licensed under Apache 2.0. Starting with later versions, licensing changes introduced potential fees for developers. In response to these changes, this community project was created. Please read the FAQ for more details.

Visit https://awesomeassertions.org for background information, usage documentation, an extensibility guide, support information and more tips & tricks.

Automatic replacement using Renovate Bot

If you are using Renovate Bot, you can automatically replace FluentAssertions with AwesomeAssertions by adding the following rule to your renovate.json:

{
 "packageRules": [
 {
 "matchPackageNames": ["FluentAssertions"],
 "replacementName": "AwesomeAssertions",
 "replacementVersion": "7.0.0"
 }
 ]
}

Renovate will then open PRs to replace FluentAssertions with AwesomeAssertions where applicable.

Alternatively, use PowerShell script to replace the dependencies.

How do I build this?

Install Visual Studio 2026 18.0+ or JetBrains Rider 2025.3 as well as the Build Tools 2022 (including the Universal Windows Platform build tools). You will also need to have .NET Framework 4.7 SDK, .NET 6.0 SDK, .NET 8.0 SDK and .NET 10.0 SDK installed. Check the for the current minimum required version.

What are these Approval.Tests?

This is a special set of tests that use the Verify project to verify whether you've introduced any breaking changes in the public API of the library.

If you've verified the changes and decided they are valid, you can accept them using AcceptApiChanges.ps1 or AcceptApiChanges.sh. Alternatively, you can use the Verify Support plug-in to compare the changes and accept them right from inside Rider. See also the .

FAQ

Q: Who are the maintainers?<br> A: The current maintainers of AwesomeAssertions are @cbersch, @IT-VBFK, @jcfnomada, @jupjohn, @lg2de, and @ScarletKuro.

Q: Will the license change to a more permissive or restrictive license compared to Apache 2.0?<br> A: The license will never change, not even to MIT. We will only maintain the original Apache 2.0 license.

Q: How is it possible that you released version 8 with almost identical changes if version 8 of FluentAssertions is under a commercial license?<br> A: This was possible because the license change was made at the final stage of the version 8 release. Any commits made before the license change were free to use, as licenses cannot be applied retroactively. If commits were added to the branch while it was under the Apache 2.0 license, they remain under Apache 2.0. So, any commits before this change fluentassertions/fluentassertions@df7e9bf can be legally used under the Apache 2.0 terms.

Q: Where can I find the documentation?<br> A: You can find the documentation at https://awesomeassertions.org

Legal Disclaimer

• This package is not affiliated with or endorsed by the authors of FluentAssertions.
• FluentAssertions is a trademark of its respective owners.
• This package was made possible by the hard work and dedication of the original authors and more than 200 contributors to FluentAssertions. We are extremely grateful for their efforts.
• For the latest information about FluentAssertions, visit the official repository.