def test_applies_correctly_to_multi_item_basket_which_exceeds_condition_but_matches_boundary(
self):
add_products(self.basket, [(D('5.00'), 3)])
result = self.benefit.apply(self.basket, self.condition, self.offer)
self.assertEqual(D('3.00'), result.discount)
self.assertEqual(2, self.basket.num_items_with_discount)
self.assertEqual(1, self.basket.num_items_without_discount)
def test_applies_correctly_to_multi_item_basket_which_matches_condition_but_with_lower_prices_than_discount(
self):
add_products(self.basket, [(D('2.00'), 6)])
result = self.benefit.apply(self.basket, self.condition, self.offer)
self.assertEqual(D('2.00'), result.discount)
self.assertEqual(5, self.basket.num_items_with_discount)
self.assertEqual(1, self.basket.num_items_without_discount)
def test_applies_correctly_to_basket_which_exceeds_condition_but_with_smaller_prices_than_discount(
self):
add_products(self.basket, [(D('2.00'), 2), (D('1.00'), 2)])
result = self.benefit.apply(self.basket, self.condition, self.offer)
self.assertEqual(D('1.00'), result.discount)
self.assertEqual(2, self.basket.num_items_with_discount)
self.assertEqual(2, self.basket.num_items_without_discount)
def test_applies_correctly_to_single_item_basket_which_matches_condition(
self):
add_products(self.basket, [(D('10.00'), 1)])
result = self.benefit.apply(self.basket, self.condition, self.offer)
self.assertEqual(D('3.00'), result.discount)
self.assertEqual(1, self.basket.num_items_with_discount)
self.assertEqual(0, self.basket.num_items_without_discount)
def test_applies_correctly_to_basket_which_exceeds_condition(self):
add_products(self.basket, [(D('12.00'), 2), (D('20.00'), 2)])
result = self.benefit.apply(self.basket, self.condition, self.offer)
self.assertEqual(1 * D('12.00') * D('0.2'), result.discount)
# Should only consume the condition products
self.assertEqual(2, self.basket.num_items_with_discount)
self.assertEqual(2, self.basket.num_items_without_discount)
def test_applies_basket_exceeding_condition_smaller_prices_than_discount_higher_prices_first(
self):
add_products(self.basket, [(D('2.00'), 2), (D('4.00'), 2)])
result = self.benefit.apply(self.basket, self.condition, self.offer)
self.assertEqual(D('3.00'), result.discount)
self.assertEqual(4, self.basket.num_items_with_discount)
self.assertEqual(0, self.basket.num_items_without_discount)
def test_consumes_correct_number_of_products_for_4_product_basket(self):
basket = factories.create_basket(empty=True)
add_products(basket, [(D('1'), 2), (D('1'), 2)])
self.assertTrue(self.offer.is_condition_satisfied(basket))
discount = self.offer.apply_benefit(basket)
self.assertTrue(discount.discount > 0)
self.assertEqual(3, basket.num_items_with_discount)
self.assertEqual(1, basket.num_items_without_discount)
self.assertFalse(self.offer.is_condition_satisfied(basket))
def test_applies_correctly_to_basket_which_matches_condition_with_multiple_lines_and_lower_total_value(
self):
# Use a basket with 2 lines
add_products(self.basket, [(D('1.00'), 1), (D('1.50'), 1)])
result = self.benefit.apply(self.basket, self.condition, self.offer)
self.assertTrue(result.is_successful)
self.assertFalse(result.is_final)
self.assertEqual(D('2.50'), result.discount)
self.assertEqual(2, self.basket.num_items_with_discount)
self.assertEqual(0, self.basket.num_items_without_discount)
def test_rounding_error_for_multiple_products(self):
add_products(self.basket, [(D('7.00'), 1), (D('7.00'), 1),
(D('7.00'), 1)])
result = self.benefit.apply(self.basket, self.condition, self.offer)
self.assertEqual(D('1.00'), result.discount)
# Make sure discount together is the same as final discount
# Rounding error would return 0.99 instead 1.00
cumulative_discount = sum(line.discount_value
for line in self.basket.all_lines())
self.assertEqual(result.discount, cumulative_discount)
self.assertEqual(3, self.basket.num_items_with_discount)
self.assertEqual(0, self.basket.num_items_without_discount)
def test_consumes_correct_number_of_products_for_6_product_basket(self):
basket = factories.create_basket(empty=True)
add_products(basket, [(D('1'), 3), (D('1'), 3)])
# First application
discount = self.offer.apply_benefit(basket)
self.assertTrue(discount.discount > 0)
self.assertEqual(3, basket.num_items_with_discount)
self.assertEqual(3, basket.num_items_without_discount)
# Second application
discount = self.offer.apply_benefit(basket)
self.assertTrue(discount.discount > 0)
self.assertEqual(6, basket.num_items_with_discount)
def test_applies_correctly_to_basket_which_matches_condition_with_multiple_lines(
self):
# Use a basket with 2 lines
add_products(self.basket, [(D('12.00'), 1), (D('12.00'), 1)])
result = self.benefit.apply(self.basket, self.condition, self.offer)
self.assertTrue(result.is_successful)
self.assertFalse(result.is_final)
self.assertEqual(D('3.00'), result.discount)
self.assertEqual(2, self.basket.num_items_with_discount)
self.assertEqual(0, self.basket.num_items_without_discount)
# Check the discount is applied equally to each line
for line in self.basket.all_lines():
self.assertEqual(D('1.50'), line.discount_value)
def test_applies_correctly_to_basket_which_exceeds_condition(self):
add_products(self.basket, [(D('12.00'), 2), (D('10.00'), 2)])
result = self.benefit.apply(self.basket, self.condition, self.offer)
self.assertEqual(D('3.00'), result.discount)
self.assertEqual(4, self.basket.num_items_with_discount)
self.assertEqual(0, self.basket.num_items_without_discount)