django/tests/datetimes/tests.py

202 lines
7.8 KiB
Python

import datetime
import pytz
from django.test import TestCase, override_settings
from django.utils import timezone
from .models import Article, Category, Comment
class DateTimesTests(TestCase):
def test_related_model_traverse(self):
a1 = Article.objects.create(
title="First one",
pub_date=datetime.datetime(2005, 7, 28, 9, 0, 0),
)
a2 = Article.objects.create(
title="Another one",
pub_date=datetime.datetime(2010, 7, 28, 10, 0, 0),
)
a3 = Article.objects.create(
title="Third one, in the first day",
pub_date=datetime.datetime(2005, 7, 28, 17, 0, 0),
)
a1.comments.create(
text="Im the HULK!",
pub_date=datetime.datetime(2005, 7, 28, 9, 30, 0),
)
a1.comments.create(
text="HULK SMASH!",
pub_date=datetime.datetime(2005, 7, 29, 1, 30, 0),
)
a2.comments.create(
text="LMAO",
pub_date=datetime.datetime(2010, 7, 28, 10, 10, 10),
)
a3.comments.create(
text="+1",
pub_date=datetime.datetime(2005, 8, 29, 10, 10, 10),
)
c = Category.objects.create(name="serious-news")
c.articles.add(a1, a3)
self.assertSequenceEqual(
Comment.objects.datetimes("article__pub_date", "year"), [
datetime.datetime(2005, 1, 1),
datetime.datetime(2010, 1, 1),
],
)
self.assertSequenceEqual(
Comment.objects.datetimes("article__pub_date", "month"), [
datetime.datetime(2005, 7, 1),
datetime.datetime(2010, 7, 1),
],
)
self.assertSequenceEqual(
Comment.objects.datetimes("article__pub_date", "week"), [
datetime.datetime(2005, 7, 25),
datetime.datetime(2010, 7, 26),
],
)
self.assertSequenceEqual(
Comment.objects.datetimes("article__pub_date", "day"), [
datetime.datetime(2005, 7, 28),
datetime.datetime(2010, 7, 28),
],
)
self.assertSequenceEqual(
Article.objects.datetimes("comments__pub_date", "day"), [
datetime.datetime(2005, 7, 28),
datetime.datetime(2005, 7, 29),
datetime.datetime(2005, 8, 29),
datetime.datetime(2010, 7, 28),
],
)
self.assertQuerysetEqual(
Article.objects.datetimes("comments__approval_date", "day"), []
)
self.assertSequenceEqual(
Category.objects.datetimes("articles__pub_date", "day"), [
datetime.datetime(2005, 7, 28),
],
)
@override_settings(USE_TZ=True)
def test_21432(self):
now = timezone.localtime(timezone.now().replace(microsecond=0))
Article.objects.create(title="First one", pub_date=now)
qs = Article.objects.datetimes('pub_date', 'second')
self.assertEqual(qs[0], now)
@override_settings(USE_TZ=True, TIME_ZONE='UTC')
def test_datetimes_ambiguous_and_invalid_times(self):
sao = pytz.timezone('America/Sao_Paulo')
utc = pytz.UTC
article = Article.objects.create(
title='Article 1',
pub_date=utc.localize(datetime.datetime(2016, 2, 21, 1)),
)
Comment.objects.create(
article=article,
pub_date=utc.localize(datetime.datetime(2016, 10, 16, 13)),
)
with timezone.override(sao):
with self.assertRaisesMessage(pytz.AmbiguousTimeError, '2016-02-20 23:00:00'):
Article.objects.datetimes('pub_date', 'hour').get()
with self.assertRaisesMessage(pytz.NonExistentTimeError, '2016-10-16 00:00:00'):
Comment.objects.datetimes('pub_date', 'day').get()
self.assertEqual(
Article.objects.datetimes('pub_date', 'hour', is_dst=False).get().dst(),
datetime.timedelta(0),
)
self.assertEqual(
Comment.objects.datetimes('pub_date', 'day', is_dst=False).get().dst(),
datetime.timedelta(0),
)
self.assertEqual(
Article.objects.datetimes('pub_date', 'hour', is_dst=True).get().dst(),
datetime.timedelta(0, 3600),
)
self.assertEqual(
Comment.objects.datetimes('pub_date', 'hour', is_dst=True).get().dst(),
datetime.timedelta(0, 3600),
)
def test_datetimes_returns_available_dates_for_given_scope_and_given_field(self):
pub_dates = [
datetime.datetime(2005, 7, 28, 12, 15),
datetime.datetime(2005, 7, 29, 2, 15),
datetime.datetime(2005, 7, 30, 5, 15),
datetime.datetime(2005, 7, 31, 19, 15)]
for i, pub_date in enumerate(pub_dates):
Article(pub_date=pub_date, title='title #{}'.format(i)).save()
self.assertSequenceEqual(
Article.objects.datetimes('pub_date', 'year'),
[datetime.datetime(2005, 1, 1, 0, 0)],
)
self.assertSequenceEqual(
Article.objects.datetimes('pub_date', 'month'),
[datetime.datetime(2005, 7, 1, 0, 0)],
)
self.assertSequenceEqual(
Article.objects.datetimes('pub_date', 'week'),
[datetime.datetime(2005, 7, 25, 0, 0)],
)
self.assertSequenceEqual(Article.objects.datetimes('pub_date', 'day'), [
datetime.datetime(2005, 7, 28, 0, 0),
datetime.datetime(2005, 7, 29, 0, 0),
datetime.datetime(2005, 7, 30, 0, 0),
datetime.datetime(2005, 7, 31, 0, 0),
])
self.assertSequenceEqual(
Article.objects.datetimes('pub_date', 'day', order='ASC'),
[
datetime.datetime(2005, 7, 28, 0, 0),
datetime.datetime(2005, 7, 29, 0, 0),
datetime.datetime(2005, 7, 30, 0, 0),
datetime.datetime(2005, 7, 31, 0, 0),
],
)
self.assertSequenceEqual(
Article.objects.datetimes('pub_date', 'day', order='DESC'),
[
datetime.datetime(2005, 7, 31, 0, 0),
datetime.datetime(2005, 7, 30, 0, 0),
datetime.datetime(2005, 7, 29, 0, 0),
datetime.datetime(2005, 7, 28, 0, 0),
],
)
def test_datetimes_has_lazy_iterator(self):
pub_dates = [
datetime.datetime(2005, 7, 28, 12, 15),
datetime.datetime(2005, 7, 29, 2, 15),
datetime.datetime(2005, 7, 30, 5, 15),
datetime.datetime(2005, 7, 31, 19, 15)]
for i, pub_date in enumerate(pub_dates):
Article(pub_date=pub_date, title='title #{}'.format(i)).save()
# Use iterator() with datetimes() to return a generator that lazily
# requests each result one at a time, to save memory.
dates = []
with self.assertNumQueries(0):
article_datetimes_iterator = Article.objects.datetimes('pub_date', 'day', order='DESC').iterator()
with self.assertNumQueries(1):
for article in article_datetimes_iterator:
dates.append(article)
self.assertEqual(dates, [
datetime.datetime(2005, 7, 31, 0, 0),
datetime.datetime(2005, 7, 30, 0, 0),
datetime.datetime(2005, 7, 29, 0, 0),
datetime.datetime(2005, 7, 28, 0, 0)])
def test_datetimes_disallows_date_fields(self):
dt = datetime.datetime(2005, 7, 28, 12, 15)
Article.objects.create(pub_date=dt, published_on=dt.date(), title="Don't put dates into datetime functions!")
with self.assertRaisesMessage(ValueError, "Cannot truncate DateField 'published_on' to DateTimeField"):
list(Article.objects.datetimes('published_on', 'second'))