Job selection on the basis of certain desirable genetic characteristics is already common in the military and sports.
The only genetic testing I'm aware of in sports were those for proving an athlete is a woman. And I think that one was replaced with a test for testosterone. I'm unaware of anywhere in the military where that happens either (maybe astronauts?). There is certainly selectivity based on abilities and attributes, but those aren't purely genetic tests. About the closest you get to a genetic test is height, but that's also based on nutrition and other environmental factors. If you classify these as genetic tests, then I don't see how this is different from also calling the current job requirements for intelligence genetic tests. Things like GPA or just talking to someone in an interview are as much genetic tests as measuring someone's height or their running speed are.