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Announcing the R3 2021 release of our mocking framework, Telerik JustMock.

The R3 2021 release of our mocking framework, Telerik JustMock, includes new support for Linux, support for the new 64-bit version of Visual Studio 2022, support for .NET 6 RC1, enhanced notifications in the Debug Window and reworked Getting Started articles. Let’s look at the details.

Support for Linux

I am happy to announce that, after a summer full of challenges to overcome differences between the Windows and Linux versions of the CLR, JustMock officially now supports Linux. JustMock becoming cross-platform is a great milestone that will allow our customers to use their unit test suites not only for Windows.

Support for Linux—JustMock and an illustrated connection to Linux

Support for Visual Studio 2022

Microsoft decided to release this year a new version of Visual Studio. Visual Studio 2022 will be a 64-bit application and will no longer be limited to using memory in the main process devenv.exe. Microsoft promises that we will no longer run out of memory when working with big and complex solutions.

With such an opening statement for the long-awaited 64-bit version, JustMock had to support it as we wouldn’t want to be a bottleneck for you to take advantage of all the benefits of the latest version of VS.

Support for Visual Studio 2022—stylized .NET logo

Support for .NET 6 Release Candidate 1

Microsoft is working hard on .NET and already shipped the first release candidate of .NET 6. We’ve made a promise to support all new versions of .NET and are delivering on that promise. JustMock now supports .NET 6 RC1.

Support for .NET 6 RC1 

Enhanced Notifications in the DebugWindow

With R3 2021, we continue to improve the DebugWindow and add more features to it. Until now, while debugging your unit test, you could miss that a new invocation has occurred of your arrangement when the Argument Matcher tab is selected. Such an event is not wanted, as the solution is typically to restart the unit test, select the Invocations tab and wait for the invocation to occur.

With R3 2021, we’ve added visual notification to the Invocations tab. In addition to that, when you select the Invocations tab, all-new invocations will be highlighted and make it easier for you to notice them.

DebugWindow Notifications. Invocations tab shows Invocation 1, Invocation 2, and bold Invocations 3 and 4. The tab also has a red dot on it.

Reworked Getting Started Articles

We heard your voice from the JustMock product survey and began with the improvement of the documentation. The first on the radar was the Getting Started articles, as they are key to every newcomer understanding more clearly what the product does and how it can help users isolate unit tests from all dependencies. We will continue reworking and improving the rest of the documentation articles during the following releases, so stay tuned.

Reworked Getting Started Articles

Get the New Version Now

The R3 2021 release is already available for download in customers’ accounts. If you are new to Telerik JustMock, you can learn more about it via the product page. It comes with a 30-day free trial, giving you some time to explore the capabilities of JustMock.

Try JustMock Now

Sign Up for the Webinar and Catch Us on Twitch

To see the new release in action, please join us on the Telerik R3 2021 webinar, on Thursday, September 30, 2021, at 11:00 am ET when our developer advocates will dive into your favorite Telerik productivity features.

Save My Webinar Seat


In addition, we have two .NET Twitch sessions planned, which will both cover our mocking tools in addition to embedded reporting and automated testing.

  • Monday, September 20 I 10:00 am ET I .NET Web Products
  • Tuesday, September 21 I 10:00 am ET I .NET Desktop Products

Let Us Know Your Thoughts

Feel free to drop us a comment below sharing your thoughts. Or visit our Feedback Portal and let us know if you have any suggestions or if you need any particular features.

You can also check our release history page for a complete list of the included improvements.

Mihail Vladov
About the Author

Mihail Vladov

Mihail Vladov is a Software Engineering Manager at Progress. He has more than a decade of experience with software and product development and is passionate about good software design and quality code. Mihail helped develop the WPF controls suite and Document Processing libraries which are used by thousands of developers. Currently, he is leading the JustMock team. In his free time, he loves to travel and taste different foods. You can find Mihail on LinkedIn.

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