Hi everyone,
the first unit testing tool for LabVIEW NXG is available since NXG version 3.0: InstaCoverage Core (v0.1). It's a free tool and it's available from the NI Package Manager.
Version 0.2 is coming soon, which will add UX/UI improvements.
Subscribe to the InstaCoverage newsletter (for NXG and current gen' LabVIEW) here.
Regards,
Peter