def test_Surcharge():
assert_equal(0.0, Surcharge.get_surcharge_percentage())
assert_equal(1.0, Surcharge.get_factor())
assert_equal(0.0, Surcharge.get_surcharge_percentage())
assert_equal(1, Surcharge.objects.count())
Surcharge.objects.filter(id=1).update(surcharge_percentage=2.35, order_surcharge=23.50)
assert_equal(2.35, Surcharge.get_surcharge_percentage())
assert_equal(1.0235, Surcharge.get_factor())
assert_equal(23.50, Surcharge.get_order_surcharge())
