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