import unittest
from app.utils import calculate_item_price
from datetime import datetime

class TestCalculation(unittest.TestCase):
    def test_winter_skis(self):
        price = calculate_item_price(5000, 2, 'medium', 'winter', datetime(2026, 1, 15))
        self.assertAlmostEqual(price, 15600.0, places=2)

if __name__ == '__main__':
    unittest.main()