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Location: symposion_app/vendor/registrasion/tests/test_invoice.py
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text/x-python
Vendor registration
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import pytz
from decimal import Decimal
from django.core.exceptions import ValidationError
from registrasion.models import commerce
from registrasion.models import conditions
from registrasion.models import inventory
from registrasion.tests.controller_helpers import TestingCartController
from registrasion.tests.controller_helpers import TestingInvoiceController
from registrasion.tests.test_helpers import TestHelperMixin
from registrasion.tests.test_cart import RegistrationCartTestCase
UTC = pytz.timezone('UTC')
class InvoiceTestCase(TestHelperMixin, RegistrationCartTestCase):
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_invoice_controller_for_id_works(self):
invoice = self._invoice_containing_prod_1(1)
id_ = invoice.invoice.id
invoice1 = TestingInvoiceController.for_id(id_)
invoice2 = TestingInvoiceController.for_id(str(id_))
self.assertEqual(invoice.invoice, invoice1.invoice)
self.assertEqual(invoice.invoice, invoice2.invoice)
def test_create_invoice_fails_if_cart_invalid(self):
self.make_ceiling("Limit ceiling", limit=1)
self.set_time(datetime.datetime(2015, 1, 1, tzinfo=UTC))
current_cart = TestingCartController.for_user(self.USER_1)
current_cart.add_to_cart(self.PROD_1, 1)
self.add_timedelta(self.RESERVATION * 2)
cart_2 = TestingCartController.for_user(self.USER_2)
cart_2.add_to_cart(self.PROD_1, 1)
# Now try to invoice the first user
with self.assertRaises(ValidationError):
TestingInvoiceController.for_cart(current_cart.cart)
def test_paying_invoice_makes_new_cart(self):
invoice = self._invoice_containing_prod_1(1)
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.assertNotEqual(
commerce.Cart.STATUS_ACTIVE,
invoice.invoice.cart.status,
)
# Asking for a cart should generate a new one
new_cart = TestingCartController.for_user(self.USER_1)
self.assertNotEqual(invoice.invoice.cart, new_cart.cart)
def test_total_payments_balance_due(self):
invoice = self._invoice_containing_prod_1(2)
# range only takes int, and the following logic fails if not a round
# number. So fail if we are not a round number so developer may fix
# this test or the product.
self.assertTrue((invoice.invoice.value % 1).is_zero())
for i in range(0, int(invoice.invoice.value)):
self.assertTrue(
i + 1, invoice.invoice.total_payments()
)
self.assertTrue(
invoice.invoice.value - i, invoice.invoice.balance_due()
)
invoice.pay("Pay 1", 1)
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 _make_zero_value_invoice(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)
return TestingInvoiceController.for_cart(current_cart.cart)
def test_zero_value_invoice_is_automatically_paid(self):
invoice_1 = self._make_zero_value_invoice()
self.assertTrue(invoice_1.invoice.is_paid)
def test_refunding_zero_value_invoice_releases_cart(self):
invoice_1 = self._make_zero_value_invoice()
cart = invoice_1.invoice.cart
invoice_1.refund()
cart.refresh_from_db()
self.assertEquals(commerce.Cart.STATUS_RELEASED, cart.status)
def test_invoice_voids_self_if_cart_changes(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)
self.assertFalse(invoice_1.invoice.is_void)
# 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)
# Viewing invoice_1's invoice should show it as void
invoice_1_new = TestingInvoiceController(invoice_1.invoice)
self.assertTrue(invoice_1_new.invoice.is_void)
# Viewing invoice_2's invoice should *not* show it as void
invoice_2_new = TestingInvoiceController(invoice_2.invoice)
self.assertFalse(invoice_2_new.invoice.is_void)
def test_invoice_voids_self_if_cart_becomes_invalid(self):
''' Invoices should be void if cart becomes invalid over time '''
self.make_ceiling("Limit ceiling", limit=1)
self.set_time(datetime.datetime(
year=2015, month=1, day=1, hour=0, minute=0, tzinfo=UTC,
))
cart1 = TestingCartController.for_user(self.USER_1)
cart2 = TestingCartController.for_user(self.USER_2)
# Create a valid invoice for USER_1
cart1.add_to_cart(self.PROD_1, 1)
inv1 = TestingInvoiceController.for_cart(cart1.cart)
# Expire the reservations, and have USER_2 take up PROD_1's ceiling
# generate an invoice
self.add_timedelta(self.RESERVATION * 2)
cart2.add_to_cart(self.PROD_2, 1)
TestingInvoiceController.for_cart(cart2.cart)
# Re-get inv1's invoice; it should void itself on loading.
inv1 = TestingInvoiceController(inv1.invoice)
self.assertTrue(inv1.invoice.is_void)
def test_voiding_invoice_creates_new_invoice(self):
invoice_1 = self._invoice_containing_prod_1(1)
self.assertFalse(invoice_1.invoice.is_void)
invoice_1.void()
invoice_2 = TestingInvoiceController.for_cart(invoice_1.invoice.cart)
self.assertNotEqual(invoice_1.invoice, invoice_2.invoice)
def test_cannot_pay_void_invoice(self):
invoice_1 = self._invoice_containing_prod_1(1)
invoice_1.void()
with self.assertRaises(ValidationError):
invoice_1.validate_allowed_to_pay()
def test_cannot_void_paid_invoice(self):
invoice = self._invoice_containing_prod_1(1)
invoice.pay("Reference", invoice.invoice.value)
with self.assertRaises(ValidationError):
invoice.void()
def test_cannot_void_partially_paid_invoice(self):
invoice = self._invoice_containing_prod_1(1)
invoice.pay("Reference", invoice.invoice.value - 1)
self.assertTrue(invoice.invoice.is_unpaid)
with self.assertRaises(ValidationError):
invoice.void()
def test_cannot_generate_blank_invoice(self):
current_cart = TestingCartController.for_user(self.USER_1)
with self.assertRaises(ValidationError):
TestingInvoiceController.for_cart(current_cart.cart)
def test_cannot_pay_implicitly_void_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))
# Implicitly void the invoice
cart.add_to_cart(self.PROD_1, 1)
with self.assertRaises(ValidationError):
invoice.validate_allowed_to_pay()
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_can_generate_manual_invoice(self):
description_price_pairs = [
("Item 1", 15),
("Item 2", 30),
]
due_delta = datetime.timedelta(hours=24)
_invoice = TestingInvoiceController.manual_invoice(
self.USER_1, due_delta, description_price_pairs
)
inv = TestingInvoiceController(_invoice)
self.assertEquals(
inv.invoice.value,
sum(i[1] for i in description_price_pairs)
)
self.assertEquals(
len(inv.invoice.lineitem_set.all()),
len(description_price_pairs)
)
inv.pay("Demo payment", inv.invoice.value)
def test_sends_email_on_invoice_creation(self):
invoice = self._invoice_containing_prod_1(1)
self.assertEquals(1, len(self.emails))
email = self.emails[0]
self.assertEquals([self.USER_1.email], email["to"])
self.assertEquals("invoice_created", email["kind"])
self.assertEquals(invoice.invoice, email["context"]["invoice"])
def test_sends_first_change_email_on_invoice_fully_paid(self):
invoice = self._invoice_containing_prod_1(1)
self.assertEquals(1, len(self.emails))
invoice.pay("Partial", invoice.invoice.value - 1)
# Should have an "invoice_created" email and nothing else.
self.assertEquals(1, len(self.emails))
invoice.pay("Remainder", 1)
self.assertEquals(2, len(self.emails))
email = self.emails[1]
self.assertEquals([self.USER_1.email], email["to"])
self.assertEquals("invoice_updated", email["kind"])
self.assertEquals(invoice.invoice, email["context"]["invoice"])
def test_sends_email_when_invoice_refunded(self):
invoice = self._invoice_containing_prod_1(1)
self.assertEquals(1, len(self.emails))
invoice.pay("Payment", invoice.invoice.value)
self.assertEquals(2, len(self.emails))
invoice.refund()
self.assertEquals(3, len(self.emails))
email = self.emails[2]
self.assertEquals([self.USER_1.email], email["to"])
self.assertEquals("invoice_updated", email["kind"])
self.assertEquals(invoice.invoice, email["context"]["invoice"])
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