Our yearly photoshoot with my favorite humans — wife and kids. So grateful for them. ❤️

m.youtube.com/watch?v=t5aK... #powershell #pspester #psconfeu @rprust.bsky.social

Beyond the Basics: Advanced Pester Testing - Jakub Jares, Robert Prüst - PSConfEU 2026

YouTube video by PowerShell Conference EU

m.youtube.com

Got that Claude Max gift subscription for open source. (claude.com/contact-sale...) Anyone has tips on how to make the most of #Claude code when working with GitHub? Been using #Copilot app and its great how you can bring repos from github directly, and split work among them.

Pester 6.1.0-alpha2 has global mocks, this solves headaches with -ModuleName. -ModuleName is now needed only when the function is not public to tell us where to find it. github.com/pester/Peste... Please try switching using it on your test base, and report issues. #pspester #powershell

🧪 Pester 6.1.0-alpha2 is out! ✨ Experimental global mocks - please try! ⚡ Code coverage now works in parallel runs 📊 Better parallel output — Describe/Context headers + debug logs interleaved with tests 🔧 CI debug flag surfaces verbose/debug output github.com/pester/Peste... #pspester #powershell

Release 6.1.0-alpha2 · pester/Pester

What's Changed Add experimental global mocks by @nohwnd in #2850 Allow empty string for Should-BeString -Expected by @nohwnd in #2863 Collect code coverage in parallel runs by @nohwnd in #286...

github.com

Few more experiments coming to #pspester. One is global mock. A mock that is effective for the whole PowerShell session. So -ModuleName on Mock is a hint where to find the command, not a definition where it would apply. We probably should make it work like that from the start. #powershell

We have a new landing page. pester.dev #pspester #powershell

Pester 6.1.0-alpha1 is out, you can add custom assertions to the new Should-* assertions. #pspester #powershell

PowerShell: "🚨 'Should' is not an approved verb." Pester 6: Reflects into a private static dictionary, adds Should to the approved list, imports, then deletes the evidence 5 seconds later. PowerShell: "Looks good to me 👍" Crime? yes. Regrets? no. github.com/pester/Peste... #powershell #pspester

Pester/src/csharp/Pester/VerbsPatcher.cs at main · pester/Pester

Pester is the ubiquitous test and mock framework for PowerShell. - pester/Pester

github.com

Pester 6.0.0 is now finally live! github.com/pester/Peste... #pspester #powershell

Release 6.0.0 · pester/Pester

Pester 6.0.0 🙋 Want to share feedback or report a bug? Open an issue or start a discussion. Pester 6.0.0 builds on the v5 runtime (Discovery & Run, the configuration object, the rich result objec...

github.com

All is ready for Pester 6.0.0 release tomorrow! #pspester #powershell

Pester 6.0.0-rc5 is out github.com/pester/Peste... #powershell #pspester

Thought Pester 6 is feature complete, but one more small breaking change - You can use tag 'None' to mean no tags. This was asked for multiple times, as a way to run tests that have no tags. Will release today in the next, and possibly last RC. #pspester #powershell

My #PSConfEU 2026 talk is up: a deep dive into how mocking actually works in Pester — scopes, session states, and the workarounds needed to get it to behave. www.youtube.com/watch?v=K62J... #pspester #powershell

Pester - deep dive into Mocking - Jakub Jareš - PSConfEU 2026

YouTube video by PowerShell Conference EU

youtube.com

And Pester 6.0.0-rc4 github.com/pester/Peste... #powershell #pspester

Release 6.0.0-rc4 · pester/Pester

What's Changed Make Should-ContainCollection match a real sub-collection by @nohwnd in #2820 Import Pester via its manifest in parallel workers by @nohwnd in #2819 Internal Document mock invocat...

github.com

Pester 5.8.0 is out, with some minimal changes. github.com/pester/Peste... #pspester #powershell

Any good ways of implementing foreach -parallel in #powershell 5.1 @jborean.bsky.social ? for pester parallel execution

github.com/orgs/VerifyT... Verify proposal for maintenance fee to get company sponsorships. Sucks that projects have to go through this just to get $1 a day back from companies using their software. Let's hope it works, because it seems like a great non-intrusive model. @simoncropp.bsky.social

Proposal: Open Source Maintenance Fee for Verify · VerifyTests · Discussion #1731

The Verify project is considering adopting the Open Source Maintenance Fee (OSMF), and we'd like to open it up for discussion before committing to anything. Verify has been freely available since 2...

github.com

@seankilleen.com You said this here: "I think you're mistaking my feedback for argument. I'm not telling you that you are wrong or trying to have a debate with you 👍." github.com/orgs/VerifyT... That is such a good line, thank you.

Proposal: Open Source Maintenance Fee for Verify · VerifyTests · Discussion #1731

The Verify project is considering adopting the Open Source Maintenance Fee (OSMF), and we'd like to open it up for discussion before committing to anything. Verify has been freely available since 2...

github.com

Pester 6.0.0-rc3 is out. Thanks for dogfooding! github.com/pester/Peste... #pspester #powershell

Release 6.0.0-rc3 · pester/Pester

What's Changed Pass data to parallel runs by @nohwnd in #2803 Suggest both local and global option in empty/null ForEach error by @nohwnd in #2805 Fix command name in Should-Invoke not-found error...

github.com

New assertions in Pester 6 (like Should-HaveType) look through the pipeline to see what you actually provided and give hints for common gotchas. #pspester #powershell

github.com/PowerShell/P... Moved powershell own tests from Pester 4 to 5 with #copilot help, lots of mechanical changes to review if someone wants to weigh in. #powershell #pspester

Migrate Pester tests from v4 to v5 by nohwnd · Pull Request #27290 · PowerShell/PowerShell

TL;DR Mechanical migration from Pester 4.99 → 5.7.1 across 256 test files, build.psm1, and 3 test-helper scripts. No test logic, assertions, or expected behaviors were changed. Most edits move set...

github.com

Preliminary plan for Pester 6 release is next Tuesday. We're on rc2 now, and the signal from repos piloting it is good - no major surprises. Try rc2 against your own suite before the final release if you can. Install-Module Pester -AllowPrerelease #pspester #powershell

Everyone on linked-in posting their amazing "this is me" posters, while my copilot drew this amazing sonic the hedgehog.

Pester 6.0.0-rc1 🎉 Feature-complete! ⚡ Parallel test execution (experimental) 🆕 New Should-* syntax + 41 assertions 🔬 Should-BeEquivalent deep comparison 📊 Faster coverage by default 160+ PRs · 15 contributors #PowerShell #pspester

Closing up on Pester 6 even more. Today I am working on built in parallel execution. #pspester #powershell

Getting into BIOS on modern laptops is such a journey.

Expanding <> templates in #pspester test names via format nicely, Yes or No? e.g. hashtable becomes @{ Name = 'Jakub' } github.com/pester/Peste... #powershell

Changed my profile picture for one that I took on #psconfeu as a tribute to the old one. Feels like end of an era.

Thanks to #copilot I am making a ton of progress on getting to Pester 6. Milestone is complete, but I've added 20 or so more bugs that looked nice to squash as well. All code of course still gets 100% reviewed, it is just much much easier to write it. #pspester #powershell