We 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

Thank you @bitwarden.bsky.social for your generous support of xUnit.net! github.com/sponsors/xunit

We 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 #TDD

We 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 #TDD

The 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 #TDD

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. (Poll is on Mastodon, as Bluesky doesn't have polls.) dotnet.social/@xunit/11493... #DotNet #UnitTest

Wrote a little bit about Microsoft Testing Platform and @xunit.net Read it here: blog.ostebaronen.dk/2025/07/ms-t... #dotnet #testing

We 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 #TDD

We 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 #TDD

In 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!

We just shipped a new prerelease build of the core framework (3.0.0-pre.40). There are no new breaking changes, so this will not reset our release clock for 3.0.0 (which should be in about a week). xunit.net/releases/v3/... #DotNet #CSharp #FSharp #UnitTest #TDD

We updated the API documentation pages to include a version home page which includes a list of commonly used types. api.xunit.net What do you think about the type list? Things you would add/remove?

A prototype of the new web site is live at new.xunit.net. The only thing missing from this is integrating the API content, which we're working on before we ship 3.0 (at which point we'll have the new site live). Please poke and prod and let us know what's broken!

We just shipped a new prerelease build of the core framework (3.0.0-pre.25). This includes new breaking changes since last week's prerelease. Please check the release notes for more information. xunit.net/releases/v3/... #DotNet #CSharp #FSharp #UnitTest #TDD

We just shipped prerelease builds of core framework (3.0.0-pre.15) and analyzers (1.23.0-pre.3). This is a major version update with breaking changes. Check the release notes for more information. xunit.net/releases/v3/... xunit.net/releases/ana... #DotNet #CSharp #FSharp #UnitTest #TDD

We just shipped core framework v3 2.0.3, analyzers 1.22.0, and Visual Studio adapter 3.1.1. 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 #TDD

For 3.0.0, we will be shipping at least one prerelease version, to be able to collect feedback on (and give time to evaluate the impact of) the breaking changes. In retrospect, we should have done this for 2.0.0. This will be the policy going forward. #DotNet #CSharp #FSharp

We just shipped core framework v3 2.0.2 and Visual Studio adapter 3.1.0. Check the release notes for new features and bugs fixed. Note: The Visual Studio adapter has moved up to .NET 8 (from .NET 6). xunit.net/releases/v3/... xunit.net/releases/vis... #DotNet #CSharp #FSharp #UnitTest #TDD

We have a prototype of the API documentation online: api.xunit.net We're not sure if it will live on a separate URL forever, but until the main site is rebuilt with DocFX, this is how it has to be for now. Feedback welcome! #DotNet #UnitTest #TDD

We just shipped core framework v3 2.0.1 and source analyzers 1.21.0. Check the release notes for new features and bugs fixed. xunit.net/releases/v3/... xunit.net/releases/ana... #DotNet #CSharp #FSharp #UnitTest #TDD

We just shipped core framework v3 2.0.0. This contains breaking changes, so the release notes are rather more detailed than normal. Release notes: xunit.net/releases/v3/... #DotNet #CSharp #FSharp #UnitTest #TDD

The next release will be 2.0.0, so today we're merging the `rel/v3-2.0.0` branch into `main`. Hopefully that release will be in about a week. 🤞

More thoughts about test parallelism as it involves the starting/finished message pairs for test collections, test classes, and test methods. If you're a runner author, do you use these messages? Can we just remove them? Provide thoughts here: github.com/xunit/xunit/... #DotNet #UnitTest

With the release of VS 2022 17.13, you may notice Test Explorer behaves slightly differently with your v3 test projects. That's because they have enabled Microsoft.Testing.Platform preview features by default. If you have issues, you can uncheck this box to revert back. #DotNet

Thinking about what an AOT version of v3 would look like. Brad spent some time talking to Andy Gocke last year about it. It almost surely end up being a completely separate code base/package. No mixing and matching, because the internal design would be very different. 1/5

We are considering changing some of the options for the ways tests run in parallel against one another. Please read this and add your thoughts. Thanks! github.com/xunit/xunit/... #DotNet #UnitTest

We'd like to get some feedback on a change coming in 2.0.0 for Assert.Equal displays when doing collection comparisons. We've already made a change to make string comparisons better, but should we do it for all collection values? github.com/xunit/xunit/... #DotNet #UnitTest

We have just shipped new builds of Core Framework v3, Analyzers, and Visual Studio adapter. Release notes: xunit.net/releases/v3/... xunit.net/releases/ana... xunit.net/releases/vis... #DotNet #CSharp #FSharp #UnitTest #TDD

We are permanently enabling support for Span/Memory and immutable collections in the assertion library, removing the XUNIT_SPAN and XUNIT_IMMUTABLE_COLLECTIONS flags for source-based consumers. You may need to add NuGet package references to System.Collections.Immutable and/or System.Memory.

We are planning to bump up the minimum version of .NET from 6 to 8 in the 2.0 release. The 1.x releases will continue to allow targeting .NET 6. There is no timeline yet for this release. #DotNet #UnitTest

We have collapsed `rel/v3-1.1.0` onto the `main` branch. The next @xunit v3 release will be 1.1.0, not 1.0.2. No, there is no planned release date yet.

Do you think it's weird that v3 test projects are stand-alone executables? You're not alone. Here is a brief history behind the decision. github.com/xunit/xunit/... #DotNet #UnitTest #MicrosoftTestingPlatform

Weird. Someone seems to have turned out the lights. (If you see something we missed, please raise an issue!)

Until now, github.com/xunit/assert... has been shared between v2 and v3. Starting today, this repository will become v3 only, and the supported target frameworks and C# language will be updated to be aligned with that. We're adding a v2 branch for people who need to stick there. #DotNet #UnitTest

We've created a new documentation on getting Code Coverage when using Microsoft Testing Platform: xunit.net/docs/getting... #DotNet #CSharp #UnitTest #TDD

We are going to begin closing older issues in the next few days. If your issue is closed for age, and you believe it's still relevant, we ask you to kindly open a new issue (with an attached v3 repro) so that it can be triaged.

We have just shipped new builds of Core Framework v3, Analyzers, and Visual Studio adapter. Release notes: xunit.net/releases/v3/... xunit.net/releases/ana... xunit.net/releases/vis... #DotNet #CSharp #FSharp #UnitTest #TDD

We have just shipped v2 Core Framework 2.9.3. We anticipate this is the final release for v2 now that all effort is focused on v3. It is primarily a bug fix release. Release notes: xunit.net/releases/v2/... #DotNet #CSharp #FSharp #UnitTest #TDD

We have created an updated "NuGet packages" page for v3: xunit.net/docs/nuget-p... #DotNet #UnitTest #TDD

It's v3 1.0.0 release day! We are excited for you to try out our newly redesigned testing framework. Release notes: xunit.net/releases/v3/... xunit.net/releases/ana... xunit.net/releases/vis... #DotNet #CSharp #FSharp #UnitTest #TDD

2600+ downloads of v3 0.7.0 and there has been very little going on in the issues/discussions to make me think we aren't ready for 1.0.0. If you haven't tried it yet, now's the time! #DotNet #CSharp #FSharp #UnitTest #TDD

@[email protected] is doing Advent of Code videos showing TDD in C# with @xunit.net. He self-describes these as "some are better than others". 😄 The first 3 days are posted now: www.youtube.com/playlist?lis... #DotNet #CSharp #TDD

We have just released v3 core 0.7.0-pre.15. This includes several changes for usability that were uncovered while porting the samples projects to v3. Release notes: xunit.net/releases/v3/... Samples project: github.com/xunit/sample... #DotNet #CSharp #FSharp #UnitTest #TDD

Welcome to the new home for xUnit.net on BlueSky! We thank you for joining us. 😀 Home page: xunit.net Source code: github.com/xunit #introduction #DotNet #CSharp #FSharp #UnitTest #TDD