Yeah, at the crew centre where there is often a huge queue of crews and airport staff waiting to go airside and where the security screening area is made of glass and is visible from both sides. Crew centre or not, a test conducted there is in public, not in front of the fare paying public perhaps but public none the less. There could easily have been 20-30 people watching and whilst the test wouldn't involve anything that would be embarrassing I would expect it to be conducted away from the gaze of the rest of the crews and staff using the facility. Not unreasonable I would have thought.