mirror of https://github.com/django/django.git
171 lines
6.4 KiB
Python
171 lines
6.4 KiB
Python
import datetime
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from operator import attrgetter
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from django.core.exceptions import ValidationError
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from django.test import TestCase, skipUnlessDBFeature
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from django.utils import tzinfo
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from models import (Worker, Article, Party, Event, Department,
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BrokenUnicodeMethod, NonAutoPK)
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class ModelTests(TestCase):
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# The bug is that the following queries would raise:
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# "TypeError: Related Field has invalid lookup: gte"
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def test_related_gte_lookup(self):
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"""
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Regression test for #10153: foreign key __gte lookups.
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"""
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Worker.objects.filter(department__gte=0)
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def test_related_lte_lookup(self):
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"""
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Regression test for #10153: foreign key __lte lookups.
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"""
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Worker.objects.filter(department__lte=0)
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def test_empty_choice(self):
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# NOTE: Part of the regression test here is merely parsing the model
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# declaration. The verbose_name, in particular, did not always work.
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a = Article.objects.create(
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headline="Look at me!", pub_date=datetime.datetime.now()
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)
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# An empty choice field should return None for the display name.
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self.assertIs(a.get_status_display(), None)
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# Empty strings should be returned as Unicode
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a = Article.objects.get(pk=a.pk)
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self.assertEqual(a.misc_data, u'')
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self.assertIs(type(a.misc_data), unicode)
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def test_long_textfield(self):
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# TextFields can hold more than 4000 characters (this was broken in
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# Oracle).
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a = Article.objects.create(
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headline="Really, really big",
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pub_date=datetime.datetime.now(),
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article_text = "ABCDE" * 1000
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)
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a = Article.objects.get(pk=a.pk)
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self.assertEqual
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(len(a.article_text), 5000)
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def test_date_lookup(self):
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# Regression test for #659
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Party.objects.create(when=datetime.datetime(1999, 12, 31))
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Party.objects.create(when=datetime.datetime(1998, 12, 31))
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Party.objects.create(when=datetime.datetime(1999, 1, 1))
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self.assertQuerysetEqual(
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Party.objects.filter(when__month=2), []
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)
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self.assertQuerysetEqual(
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Party.objects.filter(when__month=1), [
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datetime.date(1999, 1, 1)
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],
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attrgetter("when")
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)
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self.assertQuerysetEqual(
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Party.objects.filter(when__month=12), [
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datetime.date(1999, 12, 31),
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datetime.date(1998, 12, 31),
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],
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attrgetter("when")
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)
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self.assertQuerysetEqual(
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Party.objects.filter(when__year=1998), [
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datetime.date(1998, 12, 31),
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],
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attrgetter("when")
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)
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# Regression test for #8510
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self.assertQuerysetEqual(
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Party.objects.filter(when__day="31"), [
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datetime.date(1999, 12, 31),
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datetime.date(1998, 12, 31),
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],
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attrgetter("when")
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)
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self.assertQuerysetEqual(
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Party.objects.filter(when__month="12"), [
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datetime.date(1999, 12, 31),
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datetime.date(1998, 12, 31),
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],
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attrgetter("when")
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)
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self.assertQuerysetEqual(
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Party.objects.filter(when__year="1998"), [
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datetime.date(1998, 12, 31),
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],
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attrgetter("when")
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)
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def test_date_filter_null(self):
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# Date filtering was failing with NULL date values in SQLite
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# (regression test for #3501, amongst other things).
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Party.objects.create(when=datetime.datetime(1999, 1, 1))
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Party.objects.create()
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p = Party.objects.filter(when__month=1)[0]
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self.assertEqual(p.when, datetime.date(1999, 1, 1))
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self.assertQuerysetEqual(
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Party.objects.filter(pk=p.pk).dates("when", "month"), [
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1
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],
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attrgetter("month")
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)
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def test_get_next_prev_by_field(self):
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# Check that get_next_by_FIELD and get_previous_by_FIELD don't crash
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# when we have usecs values stored on the database
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#
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# It crashed after the Field.get_db_prep_* refactor, because on most
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# backends DateTimeFields supports usecs, but DateTimeField.to_python
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# didn't recognize them. (Note that
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# Model._get_next_or_previous_by_FIELD coerces values to strings)
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Event.objects.create(when=datetime.datetime(2000, 1, 1, 16, 0, 0))
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Event.objects.create(when=datetime.datetime(2000, 1, 1, 6, 1, 1))
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Event.objects.create(when=datetime.datetime(2000, 1, 1, 13, 1, 1))
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e = Event.objects.create(when=datetime.datetime(2000, 1, 1, 12, 0, 20, 24))
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self.assertEqual(
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e.get_next_by_when().when, datetime.datetime(2000, 1, 1, 13, 1, 1)
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)
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self.assertEqual(
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e.get_previous_by_when().when, datetime.datetime(2000, 1, 1, 6, 1, 1)
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)
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def test_primary_key_foreign_key_types(self):
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# Check Department and Worker (non-default PK type)
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d = Department.objects.create(id=10, name="IT")
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w = Worker.objects.create(department=d, name="Full-time")
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self.assertEqual(unicode(w), "Full-time")
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def test_broken_unicode(self):
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# Models with broken unicode methods should still have a printable repr
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b = BrokenUnicodeMethod.objects.create(name="Jerry")
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self.assertEqual(repr(b), "<BrokenUnicodeMethod: [Bad Unicode data]>")
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@skipUnlessDBFeature("supports_timezones")
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def test_timezones(self):
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# Saving an updating with timezone-aware datetime Python objects.
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# Regression test for #10443.
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# The idea is that all these creations and saving should work without
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# crashing. It's not rocket science.
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dt1 = datetime.datetime(2008, 8, 31, 16, 20, tzinfo=tzinfo.FixedOffset(600))
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dt2 = datetime.datetime(2008, 8, 31, 17, 20, tzinfo=tzinfo.FixedOffset(600))
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obj = Article.objects.create(
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headline="A headline", pub_date=dt1, article_text="foo"
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)
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obj.pub_date = dt2
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obj.save()
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self.assertEqual(
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Article.objects.filter(headline="A headline").update(pub_date=dt1),
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1
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)
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class ModelValidationTest(TestCase):
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def test_pk_validation(self):
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one = NonAutoPK.objects.create(name="one")
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again = NonAutoPK(name="one")
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self.assertRaises(ValidationError, again.validate_unique)
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