forked from saleor/saleor
/
test_discounts.py
219 lines (192 loc) · 8.62 KB
/
test_discounts.py
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from datetime import date, timedelta
from unittest.mock import Mock
import pytest
from prices import Money, TaxedMoney
from saleor.checkout.utils import get_voucher_discount_for_cart
from saleor.discount import (
DiscountValueType, VoucherApplyToProduct, VoucherType)
from saleor.discount.models import NotApplicable, Sale, Voucher
from saleor.discount.utils import (
decrease_voucher_usage, get_product_discount_on_sale,
get_product_or_category_voucher_discount, get_shipping_voucher_discount,
get_value_voucher_discount, increase_voucher_usage)
from saleor.product.models import Product, ProductVariant
@pytest.mark.parametrize('limit, value', [
(Money(5, 'USD'), Money(10, 'USD')),
(Money(10, 'USD'), Money(10, 'USD'))])
def test_valid_voucher_limit(settings, limit, value):
voucher = Voucher(
code='unique', type=VoucherType.SHIPPING,
discount_value_type=DiscountValueType.FIXED,
discount_value=Money(10, 'USD'), limit=limit)
voucher.validate_limit(TaxedMoney(net=value, gross=value))
@pytest.mark.integration
@pytest.mark.django_db(transaction=True)
def test_variant_discounts(product):
variant = product.variants.get()
low_discount = Sale.objects.create(
type=DiscountValueType.FIXED,
value=5)
low_discount.products.add(product)
discount = Sale.objects.create(
type=DiscountValueType.FIXED,
value=8)
discount.products.add(product)
high_discount = Sale.objects.create(
type=DiscountValueType.FIXED,
value=50)
high_discount.products.add(product)
final_price = variant.get_price(discounts=Sale.objects.all())
assert final_price.gross == Money(0, 'USD')
@pytest.mark.integration
@pytest.mark.django_db(transaction=True)
def test_percentage_discounts(product):
variant = product.variants.get()
discount = Sale.objects.create(
type=DiscountValueType.PERCENTAGE,
value=50)
discount.products.add(product)
final_price = variant.get_price(discounts=[discount])
assert final_price.gross == Money(5, 'USD')
def test_voucher_queryset_active(voucher):
vouchers = Voucher.objects.all()
assert len(vouchers) == 1
active_vouchers = Voucher.objects.active(
date=date.today() - timedelta(days=1))
assert len(active_vouchers) == 0
@pytest.mark.parametrize(
'prices, discount_value, discount_type, apply_to, expected_value', [
(
[10], 10, DiscountValueType.FIXED,
VoucherApplyToProduct.ONE_PRODUCT, 10),
(
[5], 10, DiscountValueType.FIXED,
VoucherApplyToProduct.ONE_PRODUCT, 5),
(
[5, 5], 10, DiscountValueType.FIXED,
VoucherApplyToProduct.ONE_PRODUCT, 10),
(
[2, 3], 10, DiscountValueType.FIXED,
VoucherApplyToProduct.ONE_PRODUCT, 5),
(
[10, 10], 5, DiscountValueType.FIXED,
VoucherApplyToProduct.ALL_PRODUCTS, 10),
(
[5, 2], 5, DiscountValueType.FIXED,
VoucherApplyToProduct.ALL_PRODUCTS, 7),
(
[10, 10, 10], 5, DiscountValueType.FIXED,
VoucherApplyToProduct.ALL_PRODUCTS, 15),
([10], 10, DiscountValueType.PERCENTAGE, None, 1),
([10, 10], 10, DiscountValueType.PERCENTAGE, None, 2)])
def test_products_voucher_checkout_discount_not(
settings, monkeypatch, prices, discount_value, discount_type, apply_to,
expected_value):
monkeypatch.setattr(
'saleor.checkout.utils.get_product_variants_and_prices',
lambda cart, product: (
(None, TaxedMoney(
net=Money(price, 'USD'), gross=Money(price, 'USD')))
for price in prices))
voucher = Voucher(
code='unique', type=VoucherType.PRODUCT,
discount_value_type=discount_type,
discount_value=discount_value,
apply_to=apply_to)
checkout = Mock(cart=Mock())
discount = get_voucher_discount_for_cart(voucher, checkout)
assert discount == Money(expected_value, 'USD')
def test_sale_applies_to_correct_products(product_type, default_category):
product = Product.objects.create(
name='Test Product', price=Money(10, 'USD'), description='',
pk=10, product_type=product_type, category=default_category)
variant = ProductVariant.objects.create(product=product, sku='firstvar')
product2 = Product.objects.create(
name='Second product', price=Money(15, 'USD'), description='',
product_type=product_type, category=default_category)
sec_variant = ProductVariant.objects.create(
product=product2, sku='secvar', pk=10)
sale = Sale.objects.create(
name='Test sale', value=3, type=DiscountValueType.FIXED)
sale.products.add(product)
assert product2 not in sale.products.all()
product_discount = get_product_discount_on_sale(sale, variant.product)
discounted_price = product_discount(product.price)
assert discounted_price == Money(7, 'USD')
with pytest.raises(NotApplicable):
get_product_discount_on_sale(sale, sec_variant.product)
def test_increase_voucher_usage():
voucher = Voucher.objects.create(
code='unique', type=VoucherType.VALUE,
discount_value_type=DiscountValueType.FIXED,
discount_value=10, usage_limit=100)
increase_voucher_usage(voucher)
voucher.refresh_from_db()
assert voucher.used == 1
def test_decrease_voucher_usage():
voucher = Voucher.objects.create(
code='unique', type=VoucherType.VALUE,
discount_value_type=VoucherType.VALUE,
discount_value=10, usage_limit=100, used=10)
decrease_voucher_usage(voucher)
voucher.refresh_from_db()
assert voucher.used == 9
@pytest.mark.parametrize(
'total, limit, discount_value, discount_value_type, expected_value', [
(20, 15, 50, DiscountValueType.PERCENTAGE, 10),
(20, None, 50, DiscountValueType.PERCENTAGE, 10),
(20, 15, 5, DiscountValueType.FIXED, 5),
(20, None, 5, DiscountValueType.FIXED, 5)])
def test_get_value_voucher_discount(
total, limit, discount_value, discount_value_type, expected_value):
voucher = Voucher(
code='unique', type=VoucherType.VALUE,
discount_value_type=discount_value_type,
discount_value=discount_value,
limit=Money(limit, 'USD') if limit is not None else None)
total_price = TaxedMoney(
net=Money(total, 'USD'), gross=Money(total, 'USD'))
discount = get_value_voucher_discount(voucher, total_price)
assert discount == Money(expected_value, 'USD')
@pytest.mark.parametrize(
'total, limit, shipping_price, discount_value, discount_value_type, expected_value', [ # noqa
(20, 15, 10, 50, DiscountValueType.PERCENTAGE, 5),
(20, None, 10, 50, DiscountValueType.PERCENTAGE, 5),
(20, 15, 10, 5, DiscountValueType.FIXED, 5),
(20, None, 10, 5, DiscountValueType.FIXED, 5)])
def test_get_shipping_voucher_discount(
total, limit, shipping_price, discount_value, discount_value_type,
expected_value):
voucher = Voucher(
code='unique', type=VoucherType.VALUE,
discount_value_type=discount_value_type,
discount_value=discount_value,
limit=Money(limit, 'USD') if limit is not None else None)
total = TaxedMoney(
net=Money(total, 'USD'), gross=Money(total, 'USD'))
shipping_price = TaxedMoney(
net=Money(shipping_price, 'USD'), gross=Money(shipping_price, 'USD'))
discount = get_shipping_voucher_discount(voucher, total, shipping_price)
assert discount == Money(expected_value, 'USD')
@pytest.mark.parametrize(
'prices, discount_value_type, discount_value, voucher_type, apply_to, expected_value', [ # noqa
([5, 10, 15], DiscountValueType.PERCENTAGE, 10, VoucherType.PRODUCT,
VoucherApplyToProduct.ALL_PRODUCTS, 3),
([5, 10, 15], DiscountValueType.FIXED, 2, VoucherType.PRODUCT,
VoucherApplyToProduct.ALL_PRODUCTS, 6),
([5, 10, 15], DiscountValueType.FIXED, 2, VoucherType.PRODUCT,
VoucherApplyToProduct.ONE_PRODUCT, 2),
([5, 10, 15], DiscountValueType.FIXED, 2, VoucherType.CATEGORY,
None, 2)])
def test_get_product_or_category_voucher_discount_all_products(
prices, discount_value_type, discount_value, voucher_type, apply_to,
expected_value):
prices = [
TaxedMoney(net=Money(price, 'USD'), gross=Money(price, 'USD'))
for price in prices]
voucher = Voucher(
code='unique', type=voucher_type, apply_to=apply_to,
discount_value_type=discount_value_type,
discount_value=discount_value)
discount = get_product_or_category_voucher_discount(voucher, prices)
assert discount == Money(expected_value, 'USD')