def test_registry_json():
reg = UnitRegistry()
json_reg = reg.to_json()
unserialized_reg = UnitRegistry.from_json(json_reg)
assert reg.lut == unserialized_reg.lut
assert reg.lut["m"][1] is length
assert reg.lut["erg"][1] is energy
def test_registry_json():
reg = UnitRegistry()
json_reg = reg.to_json()
unserialized_reg = UnitRegistry.from_json(json_reg)
assert_equal(reg.lut, unserialized_reg.lut)
