def test_removing():
# Tests removing a hull object from the ship
spacecraft = Spacecraft(100)
reflec = Option("Reflec")
spacecraft.modify_hull_option(reflec)
assert spacecraft.get_remaining_cargo() == 100
assert spacecraft.get_total_cost() == 12.0
assert len(spacecraft.hull_options) == 1
new_reflec = Option("Reflec")
spacecraft.modify_hull_option(new_reflec)
assert spacecraft.get_remaining_cargo() == 100
assert spacecraft.get_total_cost() == 2.0
assert len(spacecraft.hull_options) == 0
def test_adding():
# Tests adding hull objects to the ship
spacecraft = Spacecraft(100)
reflec = Option("Reflec")
stealth = Option("Stealth")
spacecraft.modify_hull_option(reflec)
assert spacecraft.get_remaining_cargo() == 100
assert spacecraft.get_total_cost() == 12.0
assert len(spacecraft.hull_options) == 1
spacecraft.modify_hull_option(stealth)
assert spacecraft.get_remaining_cargo() == 100
assert spacecraft.get_total_cost() == 22.0
assert len(spacecraft.hull_options) == 2