[DevExpress Support Team: CLONED FROM T463369: Test Runner - It is impossible to debug tests using VS2015 Community Update3 and XUnit 2.1]
This is still partially broken in v22.214.171.12456
Close the solution with the tests.
Open the solution.
Go to the Test Runner screen.
All tests should show the blue "without state" icon.
Right click the specific parameterized test and choose run.
The first time, this will fail with the error message posted by https://www.devexpress.com/Support/Center/Question/Details/T463747
Right click, Run again, now it works.