Hello @B M-A ,
Welcome to Microsoft Q&A forum.
but nothing happens.
Did you add any test project into your solution for testing, for example Unit Test project?
Looks like the Test Explorer failed to detect the existing tests. If you have a test project added, then please try to build/rebuild your solution.
Can you suggest an open source/free application for automated tests which supports WPF and/or WCF services?
This document: Use Coded UI tests to test your code mentions:
We recommend using Playwright for testing web apps and Appium with WinAppDriver for testing desktop and UWP apps.
For testing WPF application you can try to use Windows Application Driver(WinAppDriver), and for WCF services, you can try to use WCF Test Client tool.
Have a nice day.
Sincerely,
Tianyu
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