mirror of https://github.com/django/django.git
Refactored model lookup tests; refs #18586.
This commit is contained in:
Browniebroke
Tim Graham
parent
e9b85fd626
commit
d1e87aebf7
1
AUTHORS
1
AUTHORS
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@ -107,6 +107,7 @@ answer newbie questions, and generally made Django that much better:
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Brian Ray <http://brianray.chipy.org/>
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Brian Rosner <brosner@gmail.com>
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Bruce Kroeze <http://coderseye.com/>
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Bruno Alla <alla.brunoo@gmail.com>
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Bruno Renié <buburno@gmail.com>
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brut.alll@gmail.com
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Bryan Chow <bryan at verdjn dot com>
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@ -178,150 +178,6 @@ class ModelTest(TestCase):
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self.assertTrue(Article.objects.get(id__exact=a1.id) != Article.objects.get(id__exact=a2.id))
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self.assertFalse(Article.objects.get(id__exact=a2.id) == Article.objects.get(id__exact=a1.id))
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def test_lookup(self):
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# No articles are in the system yet.
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self.assertQuerysetEqual(Article.objects.all(), [])
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# Create an Article.
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a = Article(
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id=None,
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headline='Area man programs in Python',
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pub_date=datetime(2005, 7, 28),
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)
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# Save it into the database. You have to call save() explicitly.
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a.save()
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# Now it has an ID.
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self.assertTrue(a.id is not None)
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# Models have a pk property that is an alias for the primary key
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# attribute (by default, the 'id' attribute).
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self.assertEqual(a.pk, a.id)
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# Access database columns via Python attributes.
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self.assertEqual(a.headline, 'Area man programs in Python')
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self.assertEqual(a.pub_date, datetime(2005, 7, 28, 0, 0))
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# Change values by changing the attributes, then calling save().
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a.headline = 'Area woman programs in Python'
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a.save()
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# Article.objects.all() returns all the articles in the database.
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self.assertQuerysetEqual(Article.objects.all(),
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['<Article: Area woman programs in Python>'])
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# Django provides a rich database lookup API.
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self.assertEqual(Article.objects.get(id__exact=a.id), a)
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self.assertEqual(Article.objects.get(headline__startswith='Area woman'), a)
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self.assertEqual(Article.objects.get(pub_date__year=2005), a)
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self.assertEqual(Article.objects.get(pub_date__year=2005, pub_date__month=7), a)
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self.assertEqual(Article.objects.get(pub_date__year=2005, pub_date__month=7, pub_date__day=28), a)
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self.assertEqual(Article.objects.get(pub_date__week_day=5), a)
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# The "__exact" lookup type can be omitted, as a shortcut.
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self.assertEqual(Article.objects.get(id=a.id), a)
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self.assertEqual(Article.objects.get(headline='Area woman programs in Python'), a)
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self.assertQuerysetEqual(
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Article.objects.filter(pub_date__year=2005),
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['<Article: Area woman programs in Python>'],
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)
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self.assertQuerysetEqual(
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Article.objects.filter(pub_date__year=2004),
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[],
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)
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self.assertQuerysetEqual(
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Article.objects.filter(pub_date__year=2005, pub_date__month=7),
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['<Article: Area woman programs in Python>'],
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)
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self.assertQuerysetEqual(
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Article.objects.filter(pub_date__week_day=5),
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['<Article: Area woman programs in Python>'],
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)
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self.assertQuerysetEqual(
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Article.objects.filter(pub_date__week_day=6),
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[],
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)
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# Django raises an Article.DoesNotExist exception for get() if the
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# parameters don't match any object.
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six.assertRaisesRegex(
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self,
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ObjectDoesNotExist,
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"Article matching query does not exist.",
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Article.objects.get,
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id__exact=2000,
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)
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# To avoid dict-ordering related errors check only one lookup
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# in single assert.
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self.assertRaises(
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ObjectDoesNotExist,
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Article.objects.get,
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pub_date__year=2005,
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pub_date__month=8,
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)
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six.assertRaisesRegex(
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self,
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ObjectDoesNotExist,
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"Article matching query does not exist.",
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Article.objects.get,
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pub_date__week_day=6,
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)
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# Lookup by a primary key is the most common case, so Django
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# provides a shortcut for primary-key exact lookups.
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# The following is identical to articles.get(id=a.id).
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self.assertEqual(Article.objects.get(pk=a.id), a)
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# pk can be used as a shortcut for the primary key name in any query.
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self.assertQuerysetEqual(Article.objects.filter(pk__in=[a.id]),
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["<Article: Area woman programs in Python>"])
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# Model instances of the same type and same ID are considered equal.
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a = Article.objects.get(pk=a.id)
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b = Article.objects.get(pk=a.id)
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self.assertEqual(a, b)
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# Create a very similar object
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a = Article(
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id=None,
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headline='Area man programs in Python',
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pub_date=datetime(2005, 7, 28),
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)
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a.save()
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self.assertEqual(Article.objects.count(), 2)
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# Django raises an Article.MultipleObjectsReturned exception if the
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# lookup matches more than one object
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six.assertRaisesRegex(
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self,
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MultipleObjectsReturned,
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"get\(\) returned more than one Article -- it returned 2!",
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Article.objects.get,
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headline__startswith='Area',
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)
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six.assertRaisesRegex(
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self,
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MultipleObjectsReturned,
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"get\(\) returned more than one Article -- it returned 2!",
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Article.objects.get,
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pub_date__year=2005,
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)
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six.assertRaisesRegex(
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self,
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MultipleObjectsReturned,
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"get\(\) returned more than one Article -- it returned 2!",
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Article.objects.get,
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pub_date__year=2005,
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pub_date__month=7,
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)
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def test_multiple_objects_max_num_fetched(self):
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"""
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#6785 - get() should fetch a limited number of results.
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@ -584,6 +440,140 @@ class ModelTest(TestCase):
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hash(Article())
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class ModelLookupTest(TestCase):
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def setUp(self):
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# Create an Article.
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self.a = Article(
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id=None,
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headline='Area woman programs in Python',
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pub_date=datetime(2005, 7, 28),
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)
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# Save it into the database. You have to call save() explicitly.
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self.a.save()
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def test_all_lookup(self):
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# Change values by changing the attributes, then calling save().
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self.a.headline = 'Area man programs in Python'
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self.a.save()
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# Article.objects.all() returns all the articles in the database.
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self.assertQuerysetEqual(Article.objects.all(),
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['<Article: Area man programs in Python>'])
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def test_rich_lookup(self):
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# Django provides a rich database lookup API.
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self.assertEqual(Article.objects.get(id__exact=self.a.id), self.a)
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self.assertEqual(Article.objects.get(headline__startswith='Area woman'), self.a)
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self.assertEqual(Article.objects.get(pub_date__year=2005), self.a)
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self.assertEqual(Article.objects.get(pub_date__year=2005, pub_date__month=7), self.a)
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self.assertEqual(Article.objects.get(pub_date__year=2005, pub_date__month=7, pub_date__day=28), self.a)
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self.assertEqual(Article.objects.get(pub_date__week_day=5), self.a)
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def test_equal_lookup(self):
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# The "__exact" lookup type can be omitted, as a shortcut.
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self.assertEqual(Article.objects.get(id=self.a.id), self.a)
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self.assertEqual(Article.objects.get(headline='Area woman programs in Python'), self.a)
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self.assertQuerysetEqual(
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Article.objects.filter(pub_date__year=2005),
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['<Article: Area woman programs in Python>'],
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)
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self.assertQuerysetEqual(
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Article.objects.filter(pub_date__year=2004),
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[],
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)
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self.assertQuerysetEqual(
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Article.objects.filter(pub_date__year=2005, pub_date__month=7),
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['<Article: Area woman programs in Python>'],
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)
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self.assertQuerysetEqual(
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Article.objects.filter(pub_date__week_day=5),
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['<Article: Area woman programs in Python>'],
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)
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self.assertQuerysetEqual(
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Article.objects.filter(pub_date__week_day=6),
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[],
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)
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def test_does_not_exist(self):
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# Django raises an Article.DoesNotExist exception for get() if the
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# parameters don't match any object.
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six.assertRaisesRegex(
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self,
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ObjectDoesNotExist,
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"Article matching query does not exist.",
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Article.objects.get,
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id__exact=2000,
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)
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# To avoid dict-ordering related errors check only one lookup
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# in single assert.
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self.assertRaises(
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ObjectDoesNotExist,
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Article.objects.get,
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pub_date__year=2005,
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pub_date__month=8,
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)
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six.assertRaisesRegex(
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self,
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ObjectDoesNotExist,
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"Article matching query does not exist.",
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Article.objects.get,
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pub_date__week_day=6,
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)
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def test_lookup_by_primary_key(self):
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# Lookup by a primary key is the most common case, so Django
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# provides a shortcut for primary-key exact lookups.
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# The following is identical to articles.get(id=a.id).
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self.assertEqual(Article.objects.get(pk=self.a.id), self.a)
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# pk can be used as a shortcut for the primary key name in any query.
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self.assertQuerysetEqual(Article.objects.filter(pk__in=[self.a.id]),
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["<Article: Area woman programs in Python>"])
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# Model instances of the same type and same ID are considered equal.
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a = Article.objects.get(pk=self.a.id)
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b = Article.objects.get(pk=self.a.id)
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self.assertEqual(a, b)
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def test_too_many(self):
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# Create a very similar object
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a = Article(
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id=None,
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headline='Area man programs in Python',
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pub_date=datetime(2005, 7, 28),
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)
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a.save()
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self.assertEqual(Article.objects.count(), 2)
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# Django raises an Article.MultipleObjectsReturned exception if the
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# lookup matches more than one object
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six.assertRaisesRegex(
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self,
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MultipleObjectsReturned,
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"get\(\) returned more than one Article -- it returned 2!",
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Article.objects.get,
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headline__startswith='Area',
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)
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six.assertRaisesRegex(
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self,
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MultipleObjectsReturned,
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"get\(\) returned more than one Article -- it returned 2!",
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Article.objects.get,
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pub_date__year=2005,
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)
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six.assertRaisesRegex(
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self,
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MultipleObjectsReturned,
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"get\(\) returned more than one Article -- it returned 2!",
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Article.objects.get,
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pub_date__year=2005,
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pub_date__month=7,
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)
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class ConcurrentSaveTests(TransactionTestCase):
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available_apps = ['basic']
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