mirror of
https://github.com/django/django.git
synced 2024-11-19 16:04:13 +00:00
72 lines
2.2 KiB
Python
72 lines
2.2 KiB
Python
|
from django.test import TestCase
|
||
|
|
|
||
|
|
from models import Person, Book, Car, PersonManager, PublishedBookManager
|
||
|
|
|
||
|
|
|
||
|
|
class CustomManagerTests(TestCase):
|
||
|
|
def test_manager(self):
|
||
|
|
p1 = Person.objects.create(first_name="Bugs", last_name="Bunny", fun=True)
|
||
|
|
p2 = Person.objects.create(first_name="Droopy", last_name="Dog", fun=False)
|
||
|
|
|
||
|
|
self.assertQuerysetEqual(
|
||
|
|
Person.objects.get_fun_people(), [
|
||
|
|
"Bugs Bunny"
|
||
|
|
],
|
||
|
|
unicode
|
||
|
|
)
|
||
|
|
# The RelatedManager used on the 'books' descriptor extends the default
|
||
|
|
# manager
|
||
|
|
self.assertTrue(isinstance(p2.books, PublishedBookManager))
|
||
|
|
|
||
|
|
b1 = Book.published_objects.create(
|
||
|
|
title="How to program", author="Rodney Dangerfield", is_published=True
|
||
|
|
)
|
||
|
|
b2 = Book.published_objects.create(
|
||
|
|
title="How to be smart", author="Albert Einstein", is_published=False
|
||
|
|
)
|
||
|
|
|
||
|
|
# The default manager, "objects", doesn't exist, because a custom one
|
||
|
|
# was provided.
|
||
|
|
self.assertRaises(AttributeError, lambda: Book.objects)
|
||
|
|
|
||
|
|
# The RelatedManager used on the 'authors' descriptor extends the
|
||
|
|
# default manager
|
||
|
|
self.assertTrue(isinstance(b2.authors, PersonManager))
|
||
|
|
|
||
|
|
self.assertQuerysetEqual(
|
||
|
|
Book.published_objects.all(), [
|
||
|
|
"How to program",
|
||
|
|
],
|
||
|
|
lambda b: b.title
|
||
|
|
)
|
||
|
|
|
||
|
|
c1 = Car.cars.create(name="Corvette", mileage=21, top_speed=180)
|
||
|
|
c2 = Car.cars.create(name="Neon", mileage=31, top_speed=100)
|
||
|
|
|
||
|
|
self.assertQuerysetEqual(
|
||
|
|
Car.cars.order_by("name"), [
|
||
|
|
"Corvette",
|
||
|
|
"Neon",
|
||
|
|
],
|
||
|
|
lambda c: c.name
|
||
|
|
)
|
||
|
|
|
||
|
|
self.assertQuerysetEqual(
|
||
|
|
Car.fast_cars.all(), [
|
||
|
|
"Corvette",
|
||
|
|
],
|
||
|
|
lambda c: c.name
|
||
|
|
)
|
||
|
|
|
||
|
|
# Each model class gets a "_default_manager" attribute, which is a
|
||
|
|
# reference to the first manager defined in the class. In this case,
|
||
|
|
# it's "cars".
|
||
|
|
|
||
|
|
self.assertQuerysetEqual(
|
||
|
|
Car._default_manager.order_by("name"), [
|
||
|
|
"Corvette",
|
||
|
|
"Neon",
|
||
|
|
],
|
||
|
|
lambda c: c.name
|
||
|
|
)
|