xUnit.net @xunit.net · 12/09/2026We just shipped Core Framework v3 4.0.1 and Analyzers 2.1.0. This release includes a new Markdown report and several bug fixes. xunit.net/releases/v3/... xunit.net/releases/ana... #DotNet #CSharp #FSharp #UnitTest #TDDxunit.netCore Framework v3 4.0.1 | xUnit.net 021
xUnit.net @xunit.net · 11/09/2026Are you still using .NET Framework with xUnit.net? If so, what's keeping you there, and when might you stop? (No polls on bsky or we would've done one, like we did on Mastodon.) 221
xUnit.net @xunit.net · 05/09/2026We will be shipping Core Framework v3 4.0.1 and Analyzers 2.0.1 in about a week. If you haven't upgraded to 4.0.0 yet, now would be a good time to give it a try and report any issues you discover. Thanks! 021
xUnit.net @xunit.net · 15/08/2026We just shipped Core Framework v3 4.0.0, Analyzers 2.0.0, and VS Adapter 4.0.0. This is a major release with many new features. Check the release notes for the details! xunit.net/releases/v3/... xunit.net/releases/ana... xunit.net/releases/vis... #DotNet #CSharp #FSharp #UnitTest #TDDxunit.netCore Framework v3 4.0.0 | xUnit.net 162
xUnit.net @xunit.net · 27/07/2026Good news! Rider 2026.2 has resolved their issues with Microsoft Testing Platform v2 and xUnit.net v3. Check this issue comment for more information: youtrack.jetbrains.com/issue/RIDER-... 021
xUnit.net @xunit.net · 18/07/2026We just shipped Core Framework v3 4.0.0-pre.154, Analyzers 2.0.0-pre.60, and VS Adapter 4.0.0-pre.5. This release adds support for full test parallelization and a new analyzer, in addition to bug fixes. xunit.net/releases/v3/... xunit.net/releases/ana... xunit.net/releases/vis...xunit.netCore Framework v3 4.0.0-pre.154 | xUnit.net 000
xUnit.net @xunit.net · 31/05/2026We have posted our new code of conduct, which prohibits any contributions that are created in whole or part with AI or LLMs. This is not limited to code contributions. xunit.net/code-of-cond...xunit.netCode of Conduct | xUnit.net 130
xUnit.net @xunit.net · 31/05/2026We just shipped Core Framework v3 4.0.0-pre.128 and Analyzers 2.0.0-pre.56. This release is primarily a bug fix release with a few small features. xunit.net/releases/v3/... xunit.net/releases/ana... #DotNet #CSharp #FSharp #UnitTest #TDDxunit.netCore Framework v3 4.0.0-pre.128 | xUnit.net 020
xUnit.net @xunit.net · 02/05/2026We just shipped Core Framework v3 4.0.0-pre.108 and Analyzers 2.0.0-pre.51. This release adds new features, new analyzers, and fixed several bugs. We anticipate these being the final prerelease builds of this cycle. Please test thoroughly! xunit.net/releases/v3/... xunit.net/releases/ana...xunit.netCore Framework v3 4.0.0-pre.108 | xUnit.net 000
xUnit.net @xunit.net · 28/04/2026There will be another prerelease coming this weekend. Since we like to have prerelease builds stable for a month before declaring them release, please make sure to use the current and upcoming builds to verify, especially with Native AOT. Thanks! #DotNet #UnitTest #NativeAOT #CSharp 011
xUnit.net @xunit.net · 12/04/2026Based on this poll, we will be removing support for Visual Studio 2019 and out-of-support versions of Visual Studio 2022 from `xunit.analyzers` sometime before the final 2.0.0 release. 040
xUnit.net @xunit.net · 12/04/2026We just shipped Core Framework v3 4.0.0-pre.81, Analyzers 2.0.0-pre.40, and VS Adapter 4.0.0-pre.4. This release adds several new analyzers and fixes many bugs, especially related to Native AOT support. xunit.net/releases/v3/... xunit.net/releases/ana... xunit.net/releases/vis... #DotNet #CSharpxunit.netCore Framework v3 4.0.0-pre.81 | xUnit.net 030
xUnit.net @xunit.net · 09/04/2026Do you write custom TraitAttribute-derived attributes? Do you think they'd be useful in the core framework? If so, chime in with your suggestions here: github.com/xunit/xunit/... #DotNet #UnitTest #CSharpgithub.comDo you make custom TraitAttributes? · xunit xunit · Discussion #3537With the introduction of Native AOT, we lose both access to ITraitAttribute and the ability to create your own custom trait attribute by deriving from TraitAttribute. This is further complicated by... 000
xUnit.net @xunit.net · 05/04/2026Time for another poll! We'd like to know which version of Visual Studio you're using with xUnit.net. dotnet.social/@xunit/11635...dotnet.socialxUnit.net (@xunit@dotnet.social)What version of Visual Studio are you using with xUnit.net? [ ] VS 2019 [ ] VS 2022 (< 17.8) [ ] VS 2022 (>= 17.8) [ ] VS 2026 000
xUnit.net @xunit.net · 01/04/2026We will be removing Microsoft Testing Platform v1 support from the next major release, moving to v2 as the default. We will still support your ability to choose to disable MTP as well. #DotNet #UnitTest 193
xUnit.net @xunit.net · 25/03/2026We just shipped Core Framework v3 4.0.0-pre.33, Analyzers 2.0.0-pre.9, and VS Adapter 4.0.0-pre.3. This prerelease build adds support for Native AOT, in addition to bug fixes. xunit.net/releases/v3/... xunit.net/releases/ana... xunit.net/releases/vis... #DotNet #CSharp #FSharp #UnitTest #TDDxunit.netRelease Notes | xUnit.net 161
xUnit.net @xunit.net · 25/03/2026There is a poll up on your Mastodon account about deprecating MTP v2 in the upcoming 4.0 release. Since there is no poll feature on Bluesky, we'll just link to the Mastodon post and you can vote there. dotnet.social/@xunit/11629...dotnet.socialxUnit.net (@xunit@dotnet.social)We are considering removing support for Microsoft Testing Platform v1 from the upcoming 4.0 release. Would this be a problem for you? [ ] Yes, we still use MTP v1 [ ] No, we only use MTP v2 [ ] No, w... 213
xUnit.net @xunit.net · 08/02/2026We marked the v2 packages as deprecated in NuGet as they will only be updated if we find security issues or catastrophic bugs, and to let people know that all new work is happening in the v3 packages. Has this caused any undue grief to your teams? Chime in here: github.com/xunit/xunit/...github.comReconsider NuGet deprecation flag for xUnit.net v2 · Issue #3486 · xunit/xunitHi xUnit maintainers, I'm raising this to ask whether you'd consider removing the NuGet deprecated flag from the xunit v2 package (or, if removal isn't feasible, revising the NuGet deprecation mess... 031
xUnit.net @xunit.net · 17/01/2026The prerelease packages lists shown on our homepage are currently showing the latest release version instead. We have an open issue with shields.io to hopefully get that resolved: github.com/badges/shiel... Clicking through will still show you the latest prerelease package (a login is required).shields.ioShields.ioConcise, consistent, and legible badges 000
xUnit.net @xunit.net · 14/01/2026We just shipped Core Framework v3 3.2.2 and Analyzers 1.27.0. This includes new templates which default to Microsoft Testing Platform v2 and a new Native AOT compatible assertions package (plus bug fixes). xunit.net/releases/v3/... xunit.net/releases/ana... #DotNet #CSharp #FSharp #UnitTest #TDD 070
xUnit.net @xunit.net · 10/01/2026An update on getting native AOT console runners (to help compensate for deprecating Mono on non-Windows OSes) mastodon.social/@bradwilson/...mastodon.socialBrad Wilson (@bradwilson@mastodon.social)Attached: 1 image Success! 🎉 The execution-side of @xunit@dotnet.social has been made native AOT compatible, resulting in our ability publish a native multi-assembly runner. Right now it's only able... 000
xUnit.net @xunit.net · 05/01/2026Part of the work being done to move reports off XSL-T will include upgrading the NUnit XML report from v2 to v3 format. This will ship as part of 4.0. 000
xUnit.net @xunit.net · 02/01/2026When we release 4.0, we will be switching the default Microsoft.Testing.Platform version from v1 to v2. This may cause compatibility issues with any dependent packages that are built for v1, hence waiting for a major version shift. We will continue to support your option to choose v1. 011
xUnit.net @xunit.net · 30/12/2025We are updating the `xunit3` project template in the next release: * Offering a switch to choose MTP version: v2 (default), v1, or off * Will not include VSTest support (`xunit.runner.visualstudio`) unless MTP is off This updates the defaults for new projects without breaking back compat. 122
xUnit.net @xunit.net · 30/12/2025New doc page: Using Microsoft.Testing.Platform with xUnit.net v2. xunit.net/docs/getting... #DotNet #UnitTestxunit.netMicrosoft Testing Platform (xUnit.net v2) | xUnit.net 021
xUnit.net @xunit.net · 25/12/2025Youssef (of the Microsoft TestFx team) is working on a personal project to add support for Microsoft.Testing.Platform to v2 projects, for those are not yet able to migrate to v3. github.com/Youssef1313/... #DotNet #UnitTestgithub.comGitHub - Youssef1313/YTest.MTP.XUnit2Contribute to Youssef1313/YTest.MTP.XUnit2 development by creating an account on GitHub. 040
xUnit.net @xunit.net · 20/12/2025Is there interest in us shipping ready-made binaries of xunit.v3.runner.console (via the xunit.v3.runner.console NuGet package) that target .NET instead of .NET Framework? Which runtime IDs would you need to be supported? learn.microsoft.com/en-us/dotnet... #DotNet #UnitTestlearn.microsoft.com.NET Runtime Identifier (RID) catalog - .NETLearn about the runtime identifier (RID) and how RIDs are used in .NET. 111
xUnit.net @xunit.net · 11/12/2025We're merging in the changes for a Native AOT compatible assertion library, because these files are frequently touched. The separation process makes them hard to merge over time. Attached are lists of files added/changed in xunit/xunit and xunit/assert.xunit. 120
xUnit.net @xunit.net · 08/12/2025We just celebrated our 40th GitHub Sponsor! Many thanks to the community for keeping the caffeine flowing for @bradwilson.dev 😄 041
xUnit.net @xunit.net · 04/12/2025We are considering dropping support for Mono from the next major version. (It will likely continue to work, we just won't officially support it.) Are you still using Mono to run tests? If so, on which OSes? #DotNet #UnitTest 000
xUnit.net @xunit.net · 28/11/2025We just shipped Core Framework v3 3.2.1 and Analyzers 1.26.0. This is primarily a bug fix release. Check the release notes for more information. xunit.net/releases/v3/... xunit.net/releases/ana... #DotNet #CSharp #FSharp #UnitTest #TDDxunit.netCore Framework v3 3.2.1 | xUnit.net 040
xUnit.net @xunit.net · 22/11/2025mastodon.social/@bradwilson/...mastodon.socialBrad Wilson (@bradwilson@mastodon.social)Pondering what big breaking change feature(s) I could add for the 4.0 release of @xunit@dotnet.social. Many of these would qualify: https://github.com/xunit/xunit/issues?q=is%3Aissue%20is%3Aopen%20sor... 000
xUnit.net @xunit.net · 16/11/2025We're going to start pushing CI builds for 4.0.0, as we have two feature branches that require a major version bump already. There's no planned release date yet (not even a planned NuGet release yet), so no idea how long the branch will live. #DotNet #CSharp #FSharp #UnitTest #TDD 050
xUnit.net @xunit.net · 13/11/2025Note that this only affects building xUnit.net itself. The minimum target frameworks for using xUnit.net remain unchanged (net472 and net8.0). 000
xUnit.net @xunit.net · 13/11/2025We are updating the xUnit.net projects today to use .NET 10 SDK. If you want to pull the source and build, you will need the new SDK installed. dotnet.microsoft.com/download We will be updating the documentation shortly for changes to Microsoft Testing Platform when using .NET 10 SDK.dotnet.microsoft.comDownload .NET (Linux, macOS, and Windows) | .NETFree downloads for building and running .NET apps on Linux, macOS, and Windows. Runtimes, SDKs, and developer packs for .NET Framework, .NET, and ASP.NET. 010
xUnit.net @xunit.net · 10/11/2025If you are using a test case orderer today (implementing `ITestCaseOrderer`), take a peek at this issue that wants to introduce `ITestClassOrderer` and `ITestMethodOrderer` and the impact it has on developers using test case orderers today. Feedback welcome! github.com/xunit/xunit/...github.comCan ITestClassOrderer be added to complete the ordering support on all levels? · Issue #3424 · xunit/xunit✅ Assembly is a list of collections - we can order those with ITestCollectionOrderer ❌ Collection is a list of classes - we can not order those (request for ITestClassOrderer) ✅ Class is a list of ... 010
xUnit.net @xunit.net · 02/11/2025We just shipped Core Framework v3 3.2.0 and Analyzers 1.25.0. This includes optional support for Microsoft Testing Platform v2. Check the release notes for more information. xunit.net/releases/v3/... xunit.net/releases/ana... #DotNet #CSharp #FSharp #UnitTest #TDDxunit.netRelease Notes | xUnit.net 043
xUnit.net @xunit.net · 25/10/2025Microsoft.Testing.Platform v2 support is now available in a prerelease CI build. Note that we will continue to support v1 by default; you must opt into v2. More information: github.com/xunit/xunit/... #DotNet #MicrosoftTestingPlatformgithub.comXUnit.V3 compatible version for MTP 2.0.0 · Issue #3416 · xunit/xunitWe are currently updating to MTP 2.0.0 for one of our testing extensions. Since we are using xunit.v3 across our whole code base, we need a compatible version of xunit.v3. Otherwise we run into the... 010
xUnit.net @xunit.net · 08/10/2025Just a reminder that we have delayed plans to support MTP v2. Any attempt to use any parts of MTP v2 with xUnit.net v3 will result in failure due to incompatibilities.xunit.netHome | xUnit.net 001
xUnit.net @xunit.net · 28/09/2025We just shipped Core Framework v3 3.1.0 and Visual Studio adapter 3.1.5. Check the release notes for new features and bugs fixed. xunit.net/releases/v3/... xunit.net/releases/vis... #DotNet #CSharp #FSharp #UnitTest #TDD 010
xUnit.net @xunit.net · 17/09/2025Thank you @bitwarden.bsky.social for your generous support of xUnit.net! github.com/sponsors/xunitgithub.comSponsor @xunit on GitHub SponsorsSupport xUnit.net's open source work 020
xUnit.net @xunit.net · 05/09/2025We just shipped Core Framework v3 3.2.0-pre.5. This is specifically for users who wish to try the preview of Microsoft Testing Platform v2. Estimated RTM for 3.2.0 will be close to .NET 10 RTM. 3.1.0 RTM will be later this month. xunit.net/releases/v3/... #DotNet #CSharp #FSharp #UnitTest #TDDxunit.netCore Framework v3 3.2.0-pre.5 | xUnit.net 1102
xUnit.net @xunit.net · 16/08/2025We just shipped Core Framework v3 3.0.1, Analyzers 1.24.0, and Visual Studio adapter 3.1.4. Check the release notes for new features and bugs fixed. xunit.net/releases/v3/... xunit.net/releases/ana... xunit.net/releases/vis... #DotNet #CSharp #FSharp #UnitTest #TDDxunit.netRelease Notes | xUnit.net 072
xUnit.net @xunit.net · 06/08/2025The last core framework release was July 13. We definitely have enough for a new release next week. If you're so inclined, maybe pick up a CI build and test it before we ship and/or raise awareness of anything you want fixed. xunit.net/docs/using-c... #DotNet #CSharp #FSharp #UnitTest #TDDxunit.netUsing CI Builds | xUnit.net 011
xUnit.net @xunit.net · 29/07/2025Given that xUnit.net runs tests in random order by default, would changing the randomization order (in order to fix a bug) just be considered a bug fix or a breaking change? Asking for a SemVer. (Poll is on Mastodon, as Bluesky doesn't have polls.) dotnet.social/@xunit/11493... #DotNet #UnitTestdotnet.socialxUnit.net (@xunit@dotnet.social)Given that xUnit.net runs tests in random order by default, would changing the randomization order (in order to fix a bug) just be considered a bug fix or a breaking change? Asking for a SemVer. #Do... 000
Reposted by xUnit.netTomasz Cielecki @ostebaronen.dk · 20/07/2025Wrote a little bit about Microsoft Testing Platform and @xunit.net Read it here: blog.ostebaronen.dk/2025/07/ms-t... #dotnet #testingblog.ostebaronen.dkMicrosoft Testing Platform is cool!I love xUnit and I use it for most of my testing. With xUnit v3 the possibility of running the tests was added without the need of using any other external tools like console runners, dotnet test or V... 023
xUnit.net @xunit.net · 16/07/2025We just shipped Visual Studio adapter 3.1.3. This is a bug fix release to address a failure case when running xUnit.net v2 tests. xunit.net/releases/vis... #DotNet #CSharp #FSharp #UnitTest #TDDxunit.netRelease Notes | xUnit.net 020
xUnit.net @xunit.net · 14/07/2025We just shipped Core Framework v3 3.0.0, Analyzers 1.23.0, and Visual Studio adapter 3.1.2. Check the release notes for breaking changes, new features, and bugs fixed. xunit.net/releases/v3/... xunit.net/releases/ana... xunit.net/releases/vis... #DotNet #CSharp #FSharp #UnitTest #TDDxunit.netCore Framework v3 3.0.0 | xUnit.net 041
xUnit.net @xunit.net · 13/07/2025In preparation for publishing v3 3.0.0, we've switched over to the new website at xunit.net (and new.xunit.net is no longer published). The new content lives at github.com/xunit/xunit.... (the old `gh-pages` branch of xunit/xunit will be deleted soon). Let us know of any issues with the new site!xunit.netHome | xUnit.net 113