Specifically, METECS provides simulation (Trick), graphics (Edge), flight software integration (CFS), and ground testing infrastructure (mREST) capabilities that are used in the evaluation of each design. A team of contractors including METECS put together a common simulation and test architecture that was duplicated and is taken to each location where the habitat testing occurs. The Northrop Grumman test was performed at JSC and just wrapped up. Here is a summary of the companies and the testing locations: Lockheed Martin - Kennedy Space Center, FloridaNorthrop Grumman - Johnson Space Center, TexasBoeing - Marshall Spaceflight Center, AlabamaSierra Nevada, Corp - Johnson Space Center, TexasBigelow Aerospace - Las Vegas, Nevada
Read more about it at https://www.space.com/nasa-lunar-gateway-habitat-designs-testing.html