public void ReachabilityTable_must_not_be_reachable_when_terminated()
{
var r = Reachability.Empty.Terminated(nodeB, nodeA);
Assert.False(r.IsReachable(nodeA));
// allUnreachable doesn't include terminated
Assert.Equal(ImmutableHashSet.Create<UniqueAddress>(), r.AllUnreachable);
Assert.Equal(ImmutableHashSet.Create(nodeA), r.AllUnreachableOrTerminated);
}