Future tests will have Bumble to perform "increasingly sophisticated" moves to show it's ready for service. Another robot (Honey) is already present at the ISS and a third robot (Queen) is expected to begin in July.
In the end, NASA wants robots like the Astrobee series to serve as trustees. They will perform some of the maintenance and assistance so astronauts can focus on their missions instead of monotonous tasks. They can be especially valuable for long-term missions on the Moon and Mars, where staff and time are likely to be very limited.