From the cited article...

... We will only know that the drive works for however long the experiment is run. We will know if the 52 millinewtons of thrust from lab tests is achieved in space and if the thrust stays constant.

Changing Altitude and Speed

If the inertialess quantum drive provides 52 mN of thrust for a few weeks (e.g., 3 weeks), it will significantly alter the satellite's orbit by applying continuous prograde thrust. For a 10 kg satellite, the orbit could increase from 400 km to over 11,000 km or even escape Earth's gravity if it was operated for many weeks. For a 200 kg satellite, the altitude might rise by approximately 2,000 km). The orbit spirals outward, remaining nearly circular, with the center of mass elevated to a higher altitude. The drive achieves this by thrusting in the direction of the satellite's motion throughout its orbit. I think they will only operate it for maybe a dozen hours. I expect only tens of kilometers of orbit change. ...

Will the test in space confirm what has been seen in the lab?

Cool if it does.

Time will tell.