from __future__ import unicode_literals import datetime from unittest import skipIf try: import pytz except ImportError: pytz = None from django.test import TestCase, override_settings from django.utils import timezone from .models import Article, Comment, Category 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.assertQuerysetEqual( Comment.objects.datetimes("article__pub_date", "year"), [ datetime.datetime(2005, 1, 1), datetime.datetime(2010, 1, 1), ], lambda d: d, ) self.assertQuerysetEqual( Comment.objects.datetimes("article__pub_date", "month"), [ datetime.datetime(2005, 7, 1), datetime.datetime(2010, 7, 1), ], lambda d: d ) self.assertQuerysetEqual( Comment.objects.datetimes("article__pub_date", "day"), [ datetime.datetime(2005, 7, 28), datetime.datetime(2010, 7, 28), ], lambda d: d ) self.assertQuerysetEqual( 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), ], lambda d: d ) self.assertQuerysetEqual( Article.objects.datetimes("comments__approval_date", "day"), [] ) self.assertQuerysetEqual( Category.objects.datetimes("articles__pub_date", "day"), [ datetime.datetime(2005, 7, 28), ], lambda d: d, ) @skipIf(pytz is None, "this test requires pytz") @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) 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.assertQuerysetEqual( Article.objects.datetimes('pub_date', 'year'), ["datetime.datetime(2005, 1, 1, 0, 0)"]) self.assertQuerysetEqual( Article.objects.datetimes('pub_date', 'month'), ["datetime.datetime(2005, 7, 1, 0, 0)"]) self.assertQuerysetEqual( 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.assertQuerysetEqual( 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.assertQuerysetEqual( 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)])