Elixir.HyperTest ‑ test exec/3 with a pid that is not a VM supervisor returns {:error, :not_found}
Elixir.HyperTest ‑ test exec/3 with an unregistered vm_id returns {:error, :not_found}

Elixir.Hyper.Metering.UsageTest ‑ test Hyper.usage/1 across a VM's lifetime a stopped-but-metered VM reports its recorded lifetime total
Elixir.Hyper.Metering.UsageTest ‑ test Hyper.usage/1 across a VM's lifetime an entirely unknown VM is :not_found
Elixir.Hyper.Metering.UsageTest ‑ test Hyper.usage/1 across a VM's lifetime usage/1 resolves a pid handle to its vm_id and delegates
Elixir.HyperTest ‑ test exec/3 by a non-supervisor pid refuses with {:error, :not_found}
Elixir.HyperTest ‑ test exec/3 by an unregistered vm_id refuses with {:error, :not_found}
Elixir.HyperTest ‑ test fork_vm/1 by an unregistered vm_id refuses with {:error, :not_found}
Elixir.HyperTest ‑ test id/1 answers nil when the VM's owning node is unreachable
Elixir.HyperTest ‑ test usage/1 by a non-supervisor pid refuses with {:error, :not_found}