Those tests are not the implementations of the tests, just specifying the test case and the few options. But I found the implementations. I am not sure if this is all of the simulation tests, but it seems to cover the basic cases.
https://github.com/apple/foundationdb/tree/main/fdbserver/wo...
> Someone could probably integrate this functionality into a Kubernetes operator or something so that outside engineers could run large scale simulations reliably. But it is really expensive and CPU/compute intense, no matter how you go about it.
Maybe this.