def test_dispense_10_has_2_bills_of_5(self):
billsStorage = BillsStorage()
billsStorage.add_bills(5, 2)
billsDispenser = BillsDispenser(billsStorage)
bills = billsDispenser.dispense(10)
self.assertEqual(len(bills), 1)
self.assertEqual(bills[0].value, 5)
self.assertEqual(bills[0].qnt, 2)
def test_dispense_1_has_1_bill_of_1(self):
billsStorage = BillsStorage()
billsStorage.add_bills(1, 1)
billsDispenser = BillsDispenser(billsStorage)
bills = billsDispenser.dispense(1)
self.assertEqual(len(bills), 1)
self.assertEqual(bills[0].value, 1)
self.assertEqual(bills[0].qnt, 1)
self.assertEqual(billsStorage.get_available_qnt(1), 0)
def test_dispense_20_has_2_bills_of_5_and_2_bills_of_10(self):
billsStorage = BillsStorage()
billsStorage.add_bills(5, 2)
billsStorage.add_bills(10, 2)
billsDispenser = BillsDispenser(billsStorage)
bills = billsDispenser.dispense(20)
self.assertEqual(len(bills), 1)
self.assertEqual(bills[0].value, 10)
self.assertEqual(bills[0].qnt, 2)
self.assertEqual(billsStorage.get_available_qnt(5), 2)
self.assertEqual(billsStorage.get_available_qnt(10), 0)
def test_dispense_35_has_5_bills_of_5_10_20_50_100(self):
billsStorage = BillsStorage()
billsStorage.add_bills(5, 5)
billsStorage.add_bills(10, 5)
billsStorage.add_bills(20, 5)
billsStorage.add_bills(50, 5)
billsStorage.add_bills(100, 5)
billsDispenser = BillsDispenser(billsStorage)
bills = billsDispenser.dispense(35)
self.assertEqual(len(bills), 3)
self.assertEqual(bills[0].value, 5)
self.assertEqual(bills[0].qnt, 1)
self.assertEqual(bills[1].value, 10)
self.assertEqual(bills[1].qnt, 1)
self.assertEqual(bills[2].value, 20)
self.assertEqual(bills[2].qnt, 1)
self.assertEqual(billsStorage.get_available_qnt(5), 4)
self.assertEqual(billsStorage.get_available_qnt(10), 4)
self.assertEqual(billsStorage.get_available_qnt(20), 4)
self.assertEqual(billsStorage.get_available_qnt(50), 5)
self.assertEqual(billsStorage.get_available_qnt(100), 5)