edan_f0/tests/integration/offer/post_order_action_tests.py

from decimal import Decimal as D

from django.test import TestCase
from django.test.client import RequestFactory
from django_dynamic_fixture import G
import mock

from oscar.apps.offer import models, utils, custom
from oscar.apps.basket.models import Basket
from oscar.apps.order.utils import OrderCreator
from oscar.apps.shipping.repository import Repository
from oscar.apps.shipping.methods import FixedPrice
from oscar_testsupport.factories import create_product



class CustomAction(models.Benefit):

    class Meta:
        proxy = True

    def apply(self, basket, condition, offer=None):
        condition.consume_items(basket, ())
        return models.PostOrderAction(
            "Something will happen")

    def apply_deferred(self, basket):
        return "Something happened"

    @property
    def description(self):
        return "Will do something"


def create_offer():
    range = models.Range.objects.create(
        name="All products", includes_all_products=True)
    condition = models.CountCondition.objects.create(
        range=range,
        type=models.Condition.COUNT,
        value=1)
    benefit = custom.create_benefit(CustomAction)
    return models.ConditionalOffer.objects.create(
        condition=condition,
        benefit=benefit,
        offer_type=models.ConditionalOffer.SITE)


def apply_offers(basket):
    req = RequestFactory().get('/')
    req.user = mock.Mock()
    utils.Applicator().apply(req, basket)


class TestAnOfferWithAPostOrderAction(TestCase):

    def setUp(self):
        self.basket = G(Basket)
        for product in [create_product(price=D('12.00'))]:
            self.basket.add_product(product, 1)
        create_offer()
        apply_offers(self.basket)

    def test_applies_correctly_to_basket_which_meets_condition(self):
        self.assertEqual(1, len(self.basket.offer_applications))
        self.assertEqual(
            1, len(self.basket.offer_applications.post_order_actions))
        action = self.basket.offer_applications.post_order_actions[0]
        self.assertEqual('Something will happen', action['description'])

    def test_has_discount_recorded_correctly_when_order_is_placed(self):
        order = OrderCreator().place_order(self.basket)

        discounts = order.discounts.all()
        self.assertEqual(1, len(discounts))
        self.assertEqual(1, len(order.post_order_actions))

        discount = discounts[0]
        self.assertTrue(discount.is_post_order_action)
        self.assertEqual(D('0.00'), discount.amount)
        self.assertEqual('Something happened', discount.message)