The purpose of the dry run was to practice all the steps.
NASA astronauts recently tried out the next-gen space suits by SpaceX for the scheduled 2020 launch as part of the agency's Commercial Crew program.
Astronauts Bob Behnken and Doug Hurley underwent 'suit-up procedures' at SpaceX headquarters in Hawthorne, California, where they donned the new suits for a full launch day dry run, Cnet reports.
The pair also ran through several emergency scenarios. The purpose of the dry run was to practice all the steps that will go down before the Falcon 9 rocket propels the astronauts to the International Space Station.