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test_stuff.py
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test_stuff.py
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import unittest
import vending_machine
EURO_COINS = [1, 2, 5, 10, 20, 50, 100, 200]
USD_COINS = [1, 5, 10, 25, 50, 100]
class TestVendingMachine(unittest.TestCase):
def test_return_no_change(self):
coins = vending_machine.give_change([1], 0)
self.assertEquals(coins, [])
def test_return_one_cent(self):
coins = vending_machine.give_change([1], 1)
self.assertEquals(coins, [1])
def test_return_enough_ones(self):
coins = vending_machine.give_change([1], 3)
self.assertEquals(coins, [1, 1, 1])
def test_return_one_of_each_higher_denomination(self):
coins = vending_machine.give_change([10, 5, 2, 1], 8)
self.assertEquals(coins, [5, 2, 1])
def test_return_more_than_one_of_denomination(self):
coins = vending_machine.give_change([10, 5, 2, 1], 29)
self.assertEquals(coins, [10, 10, 5, 2, 2])
def test_denominations_dont_need_to_be_sorted(self):
coins = vending_machine.give_change([1, 5, 10, 2], 57)
self.assertEquals(coins, [10, 10, 10, 10, 10, 5, 2])
def test_cant_give_exact_change(self):
coins = vending_machine.give_change([2, 5, 10], 16)
self.assertEquals(coins, [10, 5, 2])
def test_give_EURO_change(self):
coins = vending_machine.give_change(EURO_COINS, 82)
self.assertEquals(coins, [50, 20, 10, 2])
def test_give_USD_change(self):
coins = vending_machine.give_change(USD_COINS, 82)
self.assertEquals(coins, [50, 25, 5, 1, 1])