def test_simple_subsystem_json():
lattice = Lattice([16, 8], 2)
subsystem = SimpleSubsystem([4, 4], lattice)
assert json.dumps(subsystem.to_json()) == '{"type": "SimpleSubsystem", "dimensions": [4, 4]}'
assert Subsystem.from_json(subsystem.to_json(), lattice) == subsystem
assert SimpleSubsystem.from_json(subsystem.to_json(), lattice) == subsystem
