Thankfully NASA has a sounding rocket program that flies small experiments to a high altitude but still below orbit, allowing all sorts of things to be tested. The Micra flew on a 36-foot long Terrier-Improved Orion rocket and reached 73 miles above Earth during a 13 minute flight.
Following the mission, the device was run through a regular series of tests all of which checked out. More tests are still going to be conducted to see if there was any damage to the Micra during flight.