def test_restore_assets():
assets = Assets()
p = Specification()
calc1 = Calculator(p, assets)
calc1.store_assets()
calc1.restore_assets()
assert isinstance(calc1, Calculator)
def test_store_assets():
assets = Assets()
p = Specification()
dp = DepreciationParams()
calc1 = Calculator(p, dp, assets)
calc1.store_assets()
assert isinstance(calc1, Calculator)