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from operator import attrgetter
from django.test.testcases import TestCase
from .models import Address, Contact, Customer
class TestLookupQuery(TestCase):
@classmethod
def setUpTestData(cls):
cls.address = Address.objects.create(company=1, customer_id=20)
cls.customer1 = Customer.objects.create(company=1, customer_id=20)
cls.contact1 = Contact.objects.create(company_code=1, customer_code=20)
def test_deep_mixed_forward(self):
self.assertQuerySetEqual(
Address.objects.filter(customer__contacts=self.contact1),
[self.address.id],
attrgetter("id"),
)
def test_deep_mixed_backward(self):
self.assertQuerySetEqual(
Contact.objects.filter(customer__address=self.address),
[self.contact1.id],
attrgetter("id"),
)
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