mirror of
https://github.com/django/django.git
synced 2024-12-25 10:35:48 +00:00
d5a45d79fe
git-svn-id: http://code.djangoproject.com/svn/django/trunk@16975 bcc190cf-cafb-0310-a4f2-bffc1f526a37
59 lines
2.2 KiB
Python
59 lines
2.2 KiB
Python
from __future__ import absolute_import
|
|
|
|
from datetime import datetime
|
|
|
|
from django.test import TestCase
|
|
|
|
from .models import Article, Person
|
|
|
|
|
|
class LatestTests(TestCase):
|
|
def test_latest(self):
|
|
# Because no Articles exist yet, latest() raises ArticleDoesNotExist.
|
|
self.assertRaises(Article.DoesNotExist, Article.objects.latest)
|
|
|
|
a1 = Article.objects.create(
|
|
headline="Article 1", pub_date=datetime(2005, 7, 26),
|
|
expire_date=datetime(2005, 9, 1)
|
|
)
|
|
a2 = Article.objects.create(
|
|
headline="Article 2", pub_date=datetime(2005, 7, 27),
|
|
expire_date=datetime(2005, 7, 28)
|
|
)
|
|
a3 = Article.objects.create(
|
|
headline="Article 3", pub_date=datetime(2005, 7, 27),
|
|
expire_date=datetime(2005, 8, 27)
|
|
)
|
|
a4 = Article.objects.create(
|
|
headline="Article 4", pub_date=datetime(2005, 7, 28),
|
|
expire_date=datetime(2005, 7, 30)
|
|
)
|
|
|
|
# Get the latest Article.
|
|
self.assertEqual(Article.objects.latest(), a4)
|
|
# Get the latest Article that matches certain filters.
|
|
self.assertEqual(
|
|
Article.objects.filter(pub_date__lt=datetime(2005, 7, 27)).latest(),
|
|
a1
|
|
)
|
|
|
|
# Pass a custom field name to latest() to change the field that's used
|
|
# to determine the latest object.
|
|
self.assertEqual(Article.objects.latest('expire_date'), a1)
|
|
self.assertEqual(
|
|
Article.objects.filter(pub_date__gt=datetime(2005, 7, 26)).latest('expire_date'),
|
|
a3,
|
|
)
|
|
|
|
# Ensure that latest() overrides any other ordering specified on the query. Refs #11283.
|
|
self.assertEqual(Article.objects.order_by('id').latest(), a4)
|
|
|
|
def test_latest_manual(self):
|
|
# You can still use latest() with a model that doesn't have
|
|
# "get_latest_by" set -- just pass in the field name manually.
|
|
p1 = Person.objects.create(name="Ralph", birthday=datetime(1950, 1, 1))
|
|
p2 = Person.objects.create(name="Stephanie", birthday=datetime(1960, 2, 3))
|
|
self.assertRaises(AssertionError, Person.objects.latest)
|
|
|
|
self.assertEqual(Person.objects.latest("birthday"), p2)
|