def test_new_month(self):
"""Test that the new_month function works in general, aka test that it
sets up the bill and rate correctly, and that it bills the right monthly
fee.
"""
mc = MTMContract(datetime.date(2000, 9, 29))
bill = Bill()
mc.new_month(month=10, year=2000, bill=bill)
assert mc.bill is bill
# check that the rate per minute is appropriate for the class
self.assertEqual(mc.bill.min_rate, MTM_MINS_COST)
# check that the monthly fee have been billed
self.assertEqual(mc.bill.fixed_cost, MTM_MONTHLY_FEE)
def test_task3_MTM() -> None:
# MTM Contracts
contract = MTMContract(datetime.date(2017, 2, 15))
bill = Bill()
contract.new_month(3, 2017, bill)
assert bill.get_cost() == pytest.approx(50.0)
contract.bill_call(gen_call(10))
assert bill.get_cost() == pytest.approx(50.05)
contract.bill_call(gen_call(50))
assert bill.get_cost() == pytest.approx(50.1)
bill = Bill()
contract.new_month(4, 2017, bill)
assert bill.get_cost() == pytest.approx(50.0)
assert contract.cancel_contract() == pytest.approx(50.0)