Delve: How to run a single test from a package / file?

[dlsniper]

How should the command to run a single test via delve be like? I've tried both:

• dlv --build-flags="-run ^TestHello$" test github.com/dlsniper/u/tmp/mypack --
• dlv test github.com/dlsniper/u/tmp/mypack -- -run ^TestHello$
  but without luck (all the tests in the package run for both of them).

I can upload the test example if needed.
Thank you!

[dlsniper]

Nevermind, I've finally figured it out, I need to run something like this:

dlv test --build-flags='github.com/dlsniper/u/tmp/mypack' -- -test.run ^TestHello$

Sorry for noise