def test_discount_ceiling_only_counts_items_covered_by_ceiling(self): self.make_discount_ceiling("Limit ceiling", limit=1, percentage=50) voucher = self.new_voucher(code="VOUCHER") discount = conditions.VoucherDiscount.objects.create( description="VOUCHER RECIPIENT", voucher=voucher, ) discount.save() conditions.DiscountForProduct.objects.create( discount=discount, product=self.PROD_1, percentage=100, quantity=1 ).save() # Buy two of PROD_1, in separate carts: cart = TestingCartController.for_user(self.USER_1) # the 100% discount from the voucher should apply to the first item # and not the ceiling discount. cart.apply_voucher("VOUCHER") cart.add_to_cart(self.PROD_1, 1) self.assertEqual(1, len(cart.cart.discountitem_set.all())) cart.next_cart() # The second cart has no voucher attached, so should apply the # ceiling discount cart = TestingCartController.for_user(self.USER_1) cart.add_to_cart(self.PROD_1, 1) self.assertEqual(1, len(cart.cart.discountitem_set.all()))
def test_cannot_apply_a_refunded_credit_note(self): cart = TestingCartController.for_user(self.USER_1) cart.add_to_cart(self.PROD_1, 1) invoice = TestingInvoiceController.for_cart(self.reget(cart.cart)) to_pay = invoice.invoice.value invoice.pay("Reference", to_pay) self.assertTrue(invoice.invoice.is_paid) invoice.refund() self.assertEquals(1, rego.CreditNote.unclaimed().count()) credit_note = rego.CreditNote.objects.get(invoice=invoice.invoice) cn = TestingCreditNoteController(credit_note) cn.refund() # Refunding a credit note should mark it as claimed self.assertEquals(0, rego.CreditNote.unclaimed().count()) # Create a new cart with invoice cart = TestingCartController.for_user(self.USER_1) cart.add_to_cart(self.PROD_1, 1) invoice_2 = TestingInvoiceController.for_cart(self.reget(cart.cart)) # Cannot pay with this credit note. with self.assertRaises(ValidationError): cn.apply_to_invoice(invoice_2.invoice)
def test_required_category_constraints_prevent_invoicing(self): self.CAT_1.required = True self.CAT_1.save() cart = TestingCartController.for_user(self.USER_1) cart.add_to_cart(self.PROD_3, 1) # CAT_1 is required, we don't have CAT_1 yet with self.assertRaises(ValidationError): invoice = TestingInvoiceController.for_cart(cart.cart) # Now that we have CAT_1, we can check out the cart cart.add_to_cart(self.PROD_1, 1) invoice = TestingInvoiceController.for_cart(cart.cart) # Paying for the invoice should work fine invoice.pay("Boop", invoice.invoice.value) # We have an item in the first cart, so should be able to invoice # for the second cart, even without CAT_1 in it. cart = TestingCartController.for_user(self.USER_1) cart.add_to_cart(self.PROD_3, 1) invoice2 = TestingInvoiceController.for_cart(cart.cart) # Void invoice2, and release the first cart # now we don't have any CAT_1 invoice2.void() invoice.refund() # Now that we don't have CAT_1, we can't checkout this cart with self.assertRaises(ValidationError): invoice = TestingInvoiceController.for_cart(cart.cart)
def test_discount_ceiling_only_counts_items_covered_by_ceiling(self): self.make_discount_ceiling("Limit ceiling", limit=1, percentage=50) voucher = self.new_voucher(code="VOUCHER") discount = rego.VoucherDiscount.objects.create( description="VOUCHER RECIPIENT", voucher=voucher, ) discount.save() rego.DiscountForProduct.objects.create( discount=discount, product=self.PROD_1, percentage=100, quantity=1 ).save() # Buy two of PROD_1, in separate carts: cart = TestingCartController.for_user(self.USER_1) # the 100% discount from the voucher should apply to the first item # and not the ceiling discount. cart.apply_voucher("VOUCHER") cart.add_to_cart(self.PROD_1, 1) self.assertEqual(1, len(cart.cart.discountitem_set.all())) cart.next_cart() # The second cart has no voucher attached, so should apply the # ceiling discount cart = TestingCartController.for_user(self.USER_1) cart.add_to_cart(self.PROD_1, 1) self.assertEqual(1, len(cart.cart.discountitem_set.all()))
def test_per_user_category_and_product_limits(self): self.set_limits() current_cart = TestingCartController.for_user(self.USER_1) # Hit both the product and category edges: current_cart.set_quantity(self.PROD_3, 4) current_cart.set_quantity(self.PROD_4, 6) with self.assertRaises(ValidationError): # There's unlimited PROD_3, but limited in the category current_cart.add_to_cart(self.PROD_3, 1) current_cart.set_quantity(self.PROD_3, 0) with self.assertRaises(ValidationError): # There's only 6 allowed of PROD_4 current_cart.add_to_cart(self.PROD_4, 1) # The limits should extend across carts... current_cart.next_cart() current_cart = TestingCartController.for_user(self.USER_1) current_cart.set_quantity(self.PROD_3, 4) with self.assertRaises(ValidationError): current_cart.set_quantity(self.PROD_3, 5) with self.assertRaises(ValidationError): current_cart.set_quantity(self.PROD_4, 1)
def test_cannot_refund_an_applied_credit_note(self): cart = TestingCartController.for_user(self.USER_1) cart.add_to_cart(self.PROD_1, 1) invoice = TestingInvoiceController.for_cart(self.reget(cart.cart)) to_pay = invoice.invoice.value invoice.pay("Reference", to_pay) self.assertTrue(invoice.invoice.is_paid) invoice.refund() self.assertEquals(1, commerce.CreditNote.unclaimed().count()) credit_note = commerce.CreditNote.objects.get(invoice=invoice.invoice) cn = TestingCreditNoteController(credit_note) # Create a new cart with invoice cart = TestingCartController.for_user(self.USER_1) cart.add_to_cart(self.PROD_1, 1) invoice_2 = TestingInvoiceController.for_cart(self.reget(cart.cart)) cn.apply_to_invoice(invoice_2.invoice) self.assertEquals(0, commerce.CreditNote.unclaimed().count()) # Cannot refund this credit note as it is already applied. with self.assertRaises(ValidationError): cn.refund()
def test_add_to_cart_product_per_user_limit(self): current_cart = TestingCartController.for_user(self.USER_1) # User should be able to add 1 of PROD_1 to the current cart. current_cart.add_to_cart(self.PROD_1, 1) # User should be able to add 1 of PROD_1 to the current cart. current_cart.add_to_cart(self.PROD_1, 1) # User should not be able to add 10 of PROD_1 to the current cart now, # because they have a limit of 10. with self.assertRaises(ValidationError): current_cart.add_to_cart(self.PROD_1, 10) current_cart.next_cart() current_cart = TestingCartController.for_user(self.USER_1) # User should not be able to add 10 of PROD_1 to the current cart now, # even though it's a new cart. with self.assertRaises(ValidationError): current_cart.add_to_cart(self.PROD_1, 10) # Second user should not be affected by first user's limits second_user_cart = TestingCartController.for_user(self.USER_2) second_user_cart.add_to_cart(self.PROD_1, 10)
def test_discounts_are_released_by_refunds(self): self.add_discount_prod_1_includes_prod_2(quantity=2) cart = TestingCartController.for_user(self.USER_1) cart.add_to_cart(self.PROD_1, 1) # Enable the discount discounts = DiscountController.available_discounts( self.USER_1, [], [self.PROD_2], ) self.assertEqual(1, len(discounts)) cart.next_cart() cart = TestingCartController.for_user(self.USER_1) cart.add_to_cart(self.PROD_2, 2) # The discount will be exhausted cart.next_cart() discounts = DiscountController.available_discounts( self.USER_1, [], [self.PROD_2], ) self.assertEqual(0, len(discounts)) cart.cart.status = commerce.Cart.STATUS_RELEASED cart.cart.save() discounts = DiscountController.available_discounts( self.USER_1, [], [self.PROD_2], ) self.assertEqual(1, len(discounts))
def test_discount_applies_across_carts(self): self.add_discount_prod_1_includes_prod_2() # Enable the discount during the first cart. cart = TestingCartController.for_user(self.USER_1) cart.add_to_cart(self.PROD_1, 1) cart.next_cart() # Use the discount in the second cart cart = TestingCartController.for_user(self.USER_1) cart.add_to_cart(self.PROD_2, 1) # The discount should be applied. self.assertEqual(1, len(cart.cart.discountitem_set.all())) cart.next_cart() # The discount should respect the total quantity across all # of the user's carts. cart = TestingCartController.for_user(self.USER_1) cart.add_to_cart(self.PROD_2, 2) # Having one item in the second cart leaves one more item where # the discount is applicable. The discount should apply, but only for # quantity=1 discount_items = list(cart.cart.discountitem_set.all()) self.assertEqual(1, discount_items[0].quantity)
def test_apply_credit_note_pays_invoice(self): cart = TestingCartController.for_user(self.USER_1) cart.add_to_cart(self.PROD_1, 1) invoice = TestingInvoiceController.for_cart(self.reget(cart.cart)) to_pay = invoice.invoice.value invoice.pay("Reference", to_pay) self.assertTrue(invoice.invoice.is_paid) invoice.refund() # There should be one credit note generated out of the invoice. credit_note = commerce.CreditNote.objects.get(invoice=invoice.invoice) cn = TestingCreditNoteController(credit_note) # That credit note should be in the unclaimed pile self.assertEquals(1, commerce.CreditNote.unclaimed().count()) # Create a new (identical) cart with invoice cart = TestingCartController.for_user(self.USER_1) cart.add_to_cart(self.PROD_1, 1) invoice2 = TestingInvoiceController.for_cart(self.reget(cart.cart)) cn.apply_to_invoice(invoice2.invoice) self.assertTrue(invoice2.invoice.is_paid) # That invoice should not show up as unclaimed any more self.assertEquals(0, commerce.CreditNote.unclaimed().count())
def test_cart_discounts_only_calculated_at_end_of_batches(self): def count_discounts(cart): return cart.cart.discountitem_set.count() cart = TestingCartController.for_user(self.USER_1) self.make_discount_ceiling("FLOOZLE") count_0 = count_discounts(cart) with BatchController.batch(self.USER_1): # Memoise the cart same_cart = TestingCartController.for_user(self.USER_1) with BatchController.batch(self.USER_1): # Memoise the cart same_cart_2 = TestingCartController.for_user(self.USER_1) same_cart_2.add_to_cart(self.PROD_1, 1) count_1 = count_discounts(same_cart_2) count_2 = count_discounts(same_cart) count_3 = count_discounts(cart) self.assertEqual(0, count_0) self.assertEqual(0, count_1) self.assertEqual(0, count_2) self.assertEqual(1, count_3)
def test_discounts_are_released_by_refunds(self): self.add_discount_prod_1_includes_prod_2(quantity=2) cart = TestingCartController.for_user(self.USER_1) cart.add_to_cart(self.PROD_1, 1) # Enable the discount discounts = discount.available_discounts( self.USER_1, [], [self.PROD_2], ) self.assertEqual(1, len(discounts)) cart.cart.active = False # Keep discount enabled cart.next_cart() cart = TestingCartController.for_user(self.USER_1) cart.add_to_cart(self.PROD_2, 2) # The discount will be exhausted cart.next_cart() discounts = discount.available_discounts( self.USER_1, [], [self.PROD_2], ) self.assertEqual(0, len(discounts)) cart.cart.released = True cart.next_cart() discounts = discount.available_discounts( self.USER_1, [], [self.PROD_2], ) self.assertEqual(1, len(discounts))
def test_cart_revision_does_not_increment_if_not_modified(self): cart = TestingCartController.for_user(self.USER_1) rev_0 = cart.cart.revision with BatchController.batch(self.USER_1): # Memoise the cart same_cart = TestingCartController.for_user(self.USER_1) # Do nothing on exit rev_1 = self.reget(cart.cart).revision self.assertEqual(rev_0, rev_1)
def test_product_enabled_by_category_in_previous_cart(self): self.add_category_flag() current_cart = TestingCartController.for_user(self.USER_1) current_cart.add_to_cart(self.PROD_3, 1) current_cart.next_cart() # Create new cart and try to add PROD_1 current_cart = TestingCartController.for_user(self.USER_1) current_cart.add_to_cart(self.PROD_1, 1)
def test_get_cart(self): current_cart = TestingCartController.for_user(self.USER_1) current_cart.next_cart() old_cart = current_cart current_cart = TestingCartController.for_user(self.USER_1) self.assertNotEqual(old_cart.cart, current_cart.cart) current_cart2 = TestingCartController.for_user(self.USER_1) self.assertEqual(current_cart.cart, current_cart2.cart)
def test_voucher_can_only_be_applied_once_across_multiple_carts(self): voucher = self.new_voucher(limit=2) current_cart = TestingCartController.for_user(self.USER_1) current_cart.apply_voucher(voucher.code) current_cart.next_cart() current_cart = TestingCartController.for_user(self.USER_1) with self.assertRaises(ValidationError): current_cart.apply_voucher(voucher.code) return current_cart
def test_cart_revision_only_increments_at_end_of_batches(self): cart = TestingCartController.for_user(self.USER_1) rev_0 = cart.cart.revision with BatchController.batch(self.USER_1): # Memoise the cart same_cart = TestingCartController.for_user(self.USER_1) same_cart.add_to_cart(self.PROD_1, 1) rev_1 = self.reget(same_cart.cart).revision rev_2 = self.reget(cart.cart).revision self.assertEqual(rev_0, rev_1) self.assertNotEqual(rev_0, rev_2)
def test_discount_applies_only_once_enabled(self): # Enable the discount during the first cart. cart = TestingCartController.for_user(self.USER_1) cart.add_to_cart(self.PROD_1, 1) # This would exhaust discount if present cart.add_to_cart(self.PROD_2, 2) cart.next_cart() self.add_discount_prod_1_includes_prod_2() cart = TestingCartController.for_user(self.USER_1) cart.add_to_cart(self.PROD_2, 2) discount_items = list(cart.cart.discountitem_set.all()) self.assertEqual(2, discount_items[0].quantity)
def test_per_user_category_limit_ignored_if_blank(self): self.set_limits() current_cart = TestingCartController.for_user(self.USER_1) # There is no product limit on PROD_2, and there is no cat limit current_cart.add_to_cart(self.PROD_2, 1) # There is no cat limit on PROD_1, but there is a prod limit current_cart.add_to_cart(self.PROD_1, 1)
def test_set_quantity(self): current_cart = TestingCartController.for_user(self.USER_1) def get_item(): return commerce.ProductItem.objects.get(cart=current_cart.cart, product=self.PROD_1) current_cart.set_quantity(self.PROD_1, 1) self.assertEqual(1, get_item().quantity) # Setting the quantity to zero should remove the entry from the cart. current_cart.set_quantity(self.PROD_1, 0) with self.assertRaises(ObjectDoesNotExist): get_item() current_cart.set_quantity(self.PROD_1, 9) self.assertEqual(9, get_item().quantity) with self.assertRaises(ValidationError): current_cart.set_quantity(self.PROD_1, 11) self.assertEqual(9, get_item().quantity) with self.assertRaises(ValidationError): current_cart.set_quantity(self.PROD_1, -1) self.assertEqual(9, get_item().quantity) current_cart.set_quantity(self.PROD_1, 2) self.assertEqual(2, get_item().quantity)
def test_fix_simple_errors_does_not_remove_limited_voucher(self): voucher = self.new_voucher(code="VOUCHER") current_cart = TestingCartController.for_user(self.USER_1) current_cart.apply_voucher(voucher.code) current_cart.fix_simple_errors() self.assertEqual(1, current_cart.cart.vouchers.count())
def test_items_released_from_ceiling_by_refund(self): self.make_ceiling("Limit ceiling", limit=1) first_cart = TestingCartController.for_user(self.USER_1) first_cart.add_to_cart(self.PROD_1, 1) first_cart.next_cart() second_cart = TestingCartController.for_user(self.USER_2) with self.assertRaises(ValidationError): second_cart.add_to_cart(self.PROD_1, 1) first_cart.cart.status = commerce.Cart.STATUS_RELEASED first_cart.cart.save() second_cart.add_to_cart(self.PROD_1, 1)
def test_refund_releases_used_vouchers(self): voucher = self.new_voucher(limit=2) current_cart = TestingCartController.for_user(self.USER_1) current_cart.apply_voucher(voucher.code) current_cart.add_to_cart(self.PROD_1, 1) inv = TestingInvoiceController.for_cart(current_cart.cart) if not inv.invoice.is_paid: inv.pay("Hello!", inv.invoice.value) current_cart = TestingCartController.for_user(self.USER_1) with self.assertRaises(ValidationError): current_cart.apply_voucher(voucher.code) inv.refund() current_cart.apply_voucher(voucher.code)
def test_eit_and_dif_conditions_work_together(self): self.add_product_flag(condition=conditions.FlagBase.ENABLE_IF_TRUE) self.add_category_flag(condition=conditions.FlagBase.DISABLE_IF_FALSE) cart_1 = TestingCartController.for_user(self.USER_1) # Cannot add PROD_1 until both conditions are met with self.assertRaises(ValidationError): cart_1.add_to_cart(self.PROD_1, 1) cart_1.add_to_cart(self.PROD_2, 1) # Meets the EIT condition # Need to meet both conditions before you can add with self.assertRaises(ValidationError): cart_1.add_to_cart(self.PROD_1, 1) cart_1.set_quantity(self.PROD_2, 0) # Un-meets the EIT condition cart_1.add_to_cart(self.PROD_3, 1) # Meets the DIF condition # Need to meet both conditions before you can add with self.assertRaises(ValidationError): cart_1.add_to_cart(self.PROD_1, 1) cart_1.add_to_cart(self.PROD_2, 1) # Meets the EIT condition # Now that both conditions are met, we can add the product cart_1.add_to_cart(self.PROD_1, 1)
def test_items_released_from_ceiling_by_refund(self): self.make_ceiling("Limit ceiling", limit=1) first_cart = TestingCartController.for_user(self.USER_1) first_cart.add_to_cart(self.PROD_1, 1) first_cart.next_cart() second_cart = TestingCartController.for_user(self.USER_2) with self.assertRaises(ValidationError): second_cart.add_to_cart(self.PROD_1, 1) first_cart.cart.released = True first_cart.next_cart() second_cart.add_to_cart(self.PROD_1, 1)
def test_set_quantity(self): current_cart = TestingCartController.for_user(self.USER_1) def get_item(): return rego.ProductItem.objects.get( cart=current_cart.cart, product=self.PROD_1) current_cart.set_quantity(self.PROD_1, 1) self.assertEqual(1, get_item().quantity) # Setting the quantity to zero should remove the entry from the cart. current_cart.set_quantity(self.PROD_1, 0) with self.assertRaises(ObjectDoesNotExist): get_item() current_cart.set_quantity(self.PROD_1, 9) self.assertEqual(9, get_item().quantity) with self.assertRaises(ValidationError): current_cart.set_quantity(self.PROD_1, 11) self.assertEqual(9, get_item().quantity) with self.assertRaises(ValidationError): current_cart.set_quantity(self.PROD_1, -1) self.assertEqual(9, get_item().quantity) current_cart.set_quantity(self.PROD_1, 2) self.assertEqual(2, get_item().quantity)
def test_cannot_apply_a_refunded_credit_note(self): invoice = self._invoice_containing_prod_1(1) to_pay = invoice.invoice.value invoice.pay("Reference", to_pay) self.assertTrue(invoice.invoice.is_paid) invoice.refund() self.assertEquals(1, commerce.CreditNote.unclaimed().count()) cn = self._credit_note_for_invoice(invoice.invoice) cn.refund() # Refunding a credit note should mark it as claimed self.assertEquals(0, commerce.CreditNote.unclaimed().count()) # Create a new cart with invoice cart = TestingCartController.for_user(self.USER_1) cart.add_to_cart(self.PROD_1, 1) invoice_2 = TestingInvoiceController.for_cart(self.reget(cart.cart)) # Cannot pay with this credit note. with self.assertRaises(ValidationError): cn.apply_to_invoice(invoice_2.invoice)
def test_invoice_includes_discounts(self): voucher = inventory.Voucher.objects.create( recipient="Voucher recipient", code="VOUCHER", limit=1 ) discount = conditions.VoucherDiscount.objects.create( description="VOUCHER RECIPIENT", voucher=voucher, ) conditions.DiscountForProduct.objects.create( discount=discount, product=self.PROD_1, percentage=Decimal(50), quantity=1 ) current_cart = TestingCartController.for_user(self.USER_1) current_cart.apply_voucher(voucher.code) # Should be able to create an invoice after the product is added current_cart.add_to_cart(self.PROD_1, 1) invoice_1 = TestingInvoiceController.for_cart(current_cart.cart) # That invoice should have two line items line_items = commerce.LineItem.objects.filter( invoice=invoice_1.invoice, ) self.assertEqual(2, len(line_items)) # That invoice should have a value equal to 50% of the cost of PROD_1 self.assertEqual( self.PROD_1.price * Decimal("0.5"), invoice_1.invoice.value)
def test_paying_invoice_makes_new_cart(self): current_cart = TestingCartController.for_user(self.USER_1) current_cart.add_to_cart(self.PROD_1, 1) invoice = TestingInvoiceController.for_cart(current_cart.cart) invoice.pay("A payment!", invoice.invoice.value) # This payment is for the correct amount invoice should be paid. self.assertTrue(invoice.invoice.is_paid) # Cart should not be active self.assertFalse(invoice.invoice.cart.active) # Asking for a cart should generate a new one new_cart = TestingCartController.for_user(self.USER_1) self.assertNotEqual(current_cart.cart, new_cart.cart)
def test_create_invoice(self): current_cart = TestingCartController.for_user(self.USER_1) # Should be able to create an invoice after the product is added current_cart.add_to_cart(self.PROD_1, 1) invoice_1 = TestingInvoiceController.for_cart(current_cart.cart) # That invoice should have a single line item line_items = commerce.LineItem.objects.filter( invoice=invoice_1.invoice, ) self.assertEqual(1, len(line_items)) # That invoice should have a value equal to cost of PROD_1 self.assertEqual(self.PROD_1.price, invoice_1.invoice.value) # Adding item to cart should produce a new invoice current_cart.add_to_cart(self.PROD_2, 1) invoice_2 = TestingInvoiceController.for_cart(current_cart.cart) self.assertNotEqual(invoice_1.invoice, invoice_2.invoice) # The old invoice should automatically be voided invoice_1_new = commerce.Invoice.objects.get(pk=invoice_1.invoice.id) invoice_2_new = commerce.Invoice.objects.get(pk=invoice_2.invoice.id) self.assertTrue(invoice_1_new.is_void) self.assertFalse(invoice_2_new.is_void) # Invoice should have two line items line_items = commerce.LineItem.objects.filter( invoice=invoice_2.invoice, ) self.assertEqual(2, len(line_items)) # Invoice should have a value equal to cost of PROD_1 and PROD_2 self.assertEqual( self.PROD_1.price + self.PROD_2.price, invoice_2.invoice.value)
def test_zero_value_invoice_is_automatically_paid(self): voucher = inventory.Voucher.objects.create( recipient="Voucher recipient", code="VOUCHER", limit=1 ) discount = conditions.VoucherDiscount.objects.create( description="VOUCHER RECIPIENT", voucher=voucher, ) conditions.DiscountForProduct.objects.create( discount=discount, product=self.PROD_1, percentage=Decimal(100), quantity=1 ) current_cart = TestingCartController.for_user(self.USER_1) current_cart.apply_voucher(voucher.code) # Should be able to create an invoice after the product is added current_cart.add_to_cart(self.PROD_1, 1) invoice_1 = TestingInvoiceController.for_cart(current_cart.cart) self.assertTrue(invoice_1.invoice.is_paid)
def test_discount_does_not_apply_if_not_met(self): self.add_discount_prod_1_includes_prod_2() cart = TestingCartController.for_user(self.USER_1) cart.add_to_cart(self.PROD_2, 1) # No discount should be applied as the condition is not met self.assertEqual(0, len(cart.cart.discountitem_set.all()))
def test_product_discount_does_not_appear_with_category(self): self.add_discount_prod_1_includes_prod_2(quantity=1) cart = TestingCartController.for_user(self.USER_1) cart.add_to_cart(self.PROD_1, 1) # Enable the discount discounts = discount.available_discounts(self.USER_1, [self.CAT_1], []) self.assertEqual(0, len(discounts))
def test_product_flag_fails_if_cart_refunded(self): self.add_product_flag(condition=conditions.FlagBase.ENABLE_IF_TRUE) cart = TestingCartController.for_user(self.USER_1) cart.add_to_cart(self.PROD_2, 1) cart.next_cart() cart_2 = TestingCartController.for_user(self.USER_1) cart_2.add_to_cart(self.PROD_1, 1) cart_2.set_quantity(self.PROD_1, 0) cart.cart.status = commerce.Cart.STATUS_RELEASED cart.cart.save() with self.assertRaises(ValidationError): cart_2.set_quantity(self.PROD_1, 1)