Migrated model_inheritance_regress doctests. Thanks to Gregor Müllegger for the patch.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@14576 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This commit is contained in:
Russell Keith-Magee 2010-11-16 15:14:04 +00:00
parent b84838aef4
commit 35dc7d6033
2 changed files with 355 additions and 256 deletions

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@ -1,7 +1,3 @@
"""
Regression tests for Model inheritance behaviour.
"""
import datetime
from django.db import models
@ -136,255 +132,3 @@ class BachelorParty(AbstractEvent):
class MessyBachelorParty(BachelorParty):
pass
__test__ = {'API_TESTS':"""
# Regression for #7350, #7202
# Check that when you create a Parent object with a specific reference to an
# existent child instance, saving the Parent doesn't duplicate the child. This
# behaviour is only activated during a raw save - it is mostly relevant to
# deserialization, but any sort of CORBA style 'narrow()' API would require a
# similar approach.
# Create a child-parent-grandparent chain
>>> place1 = Place(name="Guido's House of Pasta", address='944 W. Fullerton')
>>> place1.save_base(raw=True)
>>> restaurant = Restaurant(place_ptr=place1, serves_hot_dogs=True, serves_pizza=False)
>>> restaurant.save_base(raw=True)
>>> italian_restaurant = ItalianRestaurant(restaurant_ptr=restaurant, serves_gnocchi=True)
>>> italian_restaurant.save_base(raw=True)
# Create a child-parent chain with an explicit parent link
>>> place2 = Place(name='Main St', address='111 Main St')
>>> place2.save_base(raw=True)
>>> park = ParkingLot(parent=place2, capacity=100)
>>> park.save_base(raw=True)
# Check that no extra parent objects have been created.
>>> Place.objects.all()
[<Place: Guido's House of Pasta the place>, <Place: Main St the place>]
>>> dicts = Restaurant.objects.values('name','serves_hot_dogs')
>>> [sorted(d.items()) for d in dicts] == [[('name', u"Guido's House of Pasta"), ('serves_hot_dogs', True)]]
True
>>> dicts = ItalianRestaurant.objects.values('name','serves_hot_dogs','serves_gnocchi')
>>> [sorted(d.items()) for d in dicts] == [[('name', u"Guido's House of Pasta"), ('serves_gnocchi', True), ('serves_hot_dogs', True)]]
True
>>> dicts = ParkingLot.objects.values('name','capacity')
>>> [sorted(d.items()) for d in dicts]
[[('capacity', 100), ('name', u'Main St')]]
# You can also update objects when using a raw save.
>>> place1.name = "Guido's All New House of Pasta"
>>> place1.save_base(raw=True)
>>> restaurant.serves_hot_dogs = False
>>> restaurant.save_base(raw=True)
>>> italian_restaurant.serves_gnocchi = False
>>> italian_restaurant.save_base(raw=True)
>>> place2.name='Derelict lot'
>>> place2.save_base(raw=True)
>>> park.capacity = 50
>>> park.save_base(raw=True)
# No extra parent objects after an update, either.
>>> Place.objects.all()
[<Place: Derelict lot the place>, <Place: Guido's All New House of Pasta the place>]
>>> dicts = Restaurant.objects.values('name','serves_hot_dogs')
>>> [sorted(d.items()) for d in dicts] == [[('name', u"Guido's All New House of Pasta"), ('serves_hot_dogs', False)]]
True
>>> dicts = ItalianRestaurant.objects.values('name','serves_hot_dogs','serves_gnocchi')
>>> [sorted(d.items()) for d in dicts] == [[('name', u"Guido's All New House of Pasta"), ('serves_gnocchi', False), ('serves_hot_dogs', False)]]
True
>>> dicts = ParkingLot.objects.values('name','capacity')
>>> [sorted(d.items()) for d in dicts]
[[('capacity', 50), ('name', u'Derelict lot')]]
# If you try to raw_save a parent attribute onto a child object,
# the attribute will be ignored.
>>> italian_restaurant.name = "Lorenzo's Pasta Hut"
>>> italian_restaurant.save_base(raw=True)
# Note that the name has not changed
# - name is an attribute of Place, not ItalianRestaurant
>>> dicts = ItalianRestaurant.objects.values('name','serves_hot_dogs','serves_gnocchi')
>>> [sorted(d.items()) for d in dicts] == [[('name', u"Guido's All New House of Pasta"), ('serves_gnocchi', False), ('serves_hot_dogs', False)]]
True
# Regressions tests for #7105: dates() queries should be able to use fields
# from the parent model as easily as the child.
>>> obj = Child.objects.create(name='child', created=datetime.datetime(2008, 6, 26, 17, 0, 0))
>>> Child.objects.dates('created', 'month')
[datetime.datetime(2008, 6, 1, 0, 0)]
# Regression test for #7276: calling delete() on a model with multi-table
# inheritance should delete the associated rows from any ancestor tables, as
# well as any descendent objects.
>>> ident = ItalianRestaurant.objects.all()[0].id
>>> Place.objects.get(pk=ident)
<Place: Guido's All New House of Pasta the place>
>>> xx = Restaurant.objects.create(name='a', address='xx', serves_hot_dogs=True, serves_pizza=False)
# This should delete both Restuarants, plus the related places, plus the ItalianRestaurant.
>>> Restaurant.objects.all().delete()
>>> Place.objects.get(pk=ident)
Traceback (most recent call last):
...
DoesNotExist: Place matching query does not exist.
>>> ItalianRestaurant.objects.get(pk=ident)
Traceback (most recent call last):
...
DoesNotExist: ItalianRestaurant matching query does not exist.
# Regression test for #6755
>>> r = Restaurant(serves_pizza=False)
>>> r.save()
>>> r.id == r.place_ptr_id
True
>>> orig_id = r.id
>>> r = Restaurant(place_ptr_id=orig_id, serves_pizza=True)
>>> r.save()
>>> r.id == orig_id
True
>>> r.id == r.place_ptr_id
True
# Regression test for #7488. This looks a little crazy, but it's the equivalent
# of what the admin interface has to do for the edit-inline case.
>>> Supplier.objects.filter(restaurant=Restaurant(name='xx', address='yy'))
[]
# Regression test for #11764.
>>> for w in Wholesaler.objects.all().select_related():
... print w
# Regression test for #7853
# If the parent class has a self-referential link, make sure that any updates
# to that link via the child update the right table.
>>> obj = SelfRefChild.objects.create(child_data=37, parent_data=42)
>>> obj.delete()
# Regression tests for #8076 - get_(next/previous)_by_date should work.
>>> c1 = ArticleWithAuthor(headline='ArticleWithAuthor 1', author="Person 1", pub_date=datetime.datetime(2005, 8, 1, 3, 0))
>>> c1.save()
>>> c2 = ArticleWithAuthor(headline='ArticleWithAuthor 2', author="Person 2", pub_date=datetime.datetime(2005, 8, 1, 10, 0))
>>> c2.save()
>>> c3 = ArticleWithAuthor(headline='ArticleWithAuthor 3', author="Person 3", pub_date=datetime.datetime(2005, 8, 2))
>>> c3.save()
>>> c1.get_next_by_pub_date()
<ArticleWithAuthor: ArticleWithAuthor 2>
>>> c2.get_next_by_pub_date()
<ArticleWithAuthor: ArticleWithAuthor 3>
>>> c3.get_next_by_pub_date()
Traceback (most recent call last):
...
DoesNotExist: ArticleWithAuthor matching query does not exist.
>>> c3.get_previous_by_pub_date()
<ArticleWithAuthor: ArticleWithAuthor 2>
>>> c2.get_previous_by_pub_date()
<ArticleWithAuthor: ArticleWithAuthor 1>
>>> c1.get_previous_by_pub_date()
Traceback (most recent call last):
...
DoesNotExist: ArticleWithAuthor matching query does not exist.
# Regression test for #8825: Make sure all inherited fields (esp. m2m fields, in
# this case) appear on the child class.
>>> M2MChild.objects.filter(articles__isnull=False)
[]
# All fields from an ABC, including those inherited non-abstractly should be
# available on child classes (#7588). Creating this instance should work
# without error.
>>> _ = QualityControl.objects.create(headline="Problems in Django", pub_date=datetime.datetime.now(), quality=10, assignee="adrian")
# Ordering should not include any database column more than once (this is most
# likely to ocurr naturally with model inheritance, so we check it here).
# Regression test for #9390. This necessarily pokes at the SQL string for the
# query, since the duplicate problems are only apparent at that late stage.
>>> qs = ArticleWithAuthor.objects.order_by('pub_date', 'pk')
>>> sql = qs.query.get_compiler(qs.db).as_sql()[0]
>>> fragment = sql[sql.find('ORDER BY'):]
>>> pos = fragment.find('pub_date')
>>> fragment.find('pub_date', pos + 1) == -1
True
# It is possible to call update() and only change a field in an ancestor model
# (regression test for #10362).
>>> article = ArticleWithAuthor.objects.create(author="fred", headline="Hey there!", pub_date = datetime.datetime(2009, 3, 1, 8, 0, 0))
>>> ArticleWithAuthor.objects.filter(author="fred").update(headline="Oh, no!")
1
>>> ArticleWithAuthor.objects.filter(pk=article.pk).update(headline="Oh, no!")
1
>>> DerivedM.objects.create(customPK=44, base_name="b1", derived_name="d1")
<DerivedM: PK = 44, base_name = b1, derived_name = d1>
>>> DerivedM.objects.all()
[<DerivedM: PK = 44, base_name = b1, derived_name = d1>]
# Regression tests for #10406
# If there's a one-to-one link between a child model and the parent and no
# explicit pk declared, we can use the one-to-one link as the pk on the child.
# The ParkingLot2 model shows this behaviour.
>>> ParkingLot2._meta.pk.name
"parent"
# However, the connector from child to parent need not be the pk on the child
# at all.
>>> ParkingLot3._meta.pk.name
"primary_key"
>>> ParkingLot3._meta.get_ancestor_link(Place).name # the child->parent link
"parent"
# Check that many-to-many relations defined on an abstract base class
# are correctly inherited (and created) on the child class.
>>> p1 = Person.objects.create(name='Alice')
>>> p2 = Person.objects.create(name='Bob')
>>> p3 = Person.objects.create(name='Carol')
>>> p4 = Person.objects.create(name='Dave')
>>> birthday = BirthdayParty.objects.create(name='Birthday party for Alice')
>>> birthday.attendees = [p1, p3]
>>> bachelor = BachelorParty.objects.create(name='Bachelor party for Bob')
>>> bachelor.attendees = [p2, p4]
>>> print p1.birthdayparty_set.all()
[<BirthdayParty: Birthday party for Alice>]
>>> print p1.bachelorparty_set.all()
[]
>>> print p2.bachelorparty_set.all()
[<BachelorParty: Bachelor party for Bob>]
# Check that a subclass of a subclass of an abstract model
# doesn't get it's own accessor.
>>> p2.messybachelorparty_set.all()
Traceback (most recent call last):
...
AttributeError: 'Person' object has no attribute 'messybachelorparty_set'
# ... but it does inherit the m2m from it's parent
>>> messy = MessyBachelorParty.objects.create(name='Bachelor party for Dave')
>>> messy.attendees = [p4]
>>> p4.bachelorparty_set.all()
[<BachelorParty: Bachelor party for Bob>, <BachelorParty: Bachelor party for Dave>]
"""}

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@ -0,0 +1,355 @@
"""
Regression tests for Model inheritance behaviour.
"""
import datetime
from django.test import TestCase
from regressiontests.model_inheritance_regress.models import (
Place, Restaurant, ItalianRestaurant, ParkingLot, ParkingLot2,
ParkingLot3, Supplier, Wholesaler, Child, SelfRefChild, ArticleWithAuthor,
M2MChild, QualityControl, DerivedM, Person, BirthdayParty, BachelorParty,
MessyBachelorParty)
class ModelInheritanceTest(TestCase):
def test_model_inheritance(self):
# Regression for #7350, #7202
# Check that when you create a Parent object with a specific reference
# to an existent child instance, saving the Parent doesn't duplicate
# the child. This behaviour is only activated during a raw save - it
# is mostly relevant to deserialization, but any sort of CORBA style
# 'narrow()' API would require a similar approach.
# Create a child-parent-grandparent chain
place1 = Place(
name="Guido's House of Pasta",
address='944 W. Fullerton')
place1.save_base(raw=True)
restaurant = Restaurant(
place_ptr=place1,
serves_hot_dogs=True,
serves_pizza=False)
restaurant.save_base(raw=True)
italian_restaurant = ItalianRestaurant(
restaurant_ptr=restaurant,
serves_gnocchi=True)
italian_restaurant.save_base(raw=True)
# Create a child-parent chain with an explicit parent link
place2 = Place(name='Main St', address='111 Main St')
place2.save_base(raw=True)
park = ParkingLot(parent=place2, capacity=100)
park.save_base(raw=True)
# Check that no extra parent objects have been created.
places = list(Place.objects.all())
self.assertEqual(places, [place1, place2])
dicts = list(Restaurant.objects.values('name','serves_hot_dogs'))
self.assertEqual(dicts, [{
'name': u"Guido's House of Pasta",
'serves_hot_dogs': True
}])
dicts = list(ItalianRestaurant.objects.values(
'name','serves_hot_dogs','serves_gnocchi'))
self.assertEqual(dicts, [{
'name': u"Guido's House of Pasta",
'serves_gnocchi': True,
'serves_hot_dogs': True,
}])
dicts = list(ParkingLot.objects.values('name','capacity'))
self.assertEqual(dicts, [{
'capacity': 100,
'name': u'Main St',
}])
# You can also update objects when using a raw save.
place1.name = "Guido's All New House of Pasta"
place1.save_base(raw=True)
restaurant.serves_hot_dogs = False
restaurant.save_base(raw=True)
italian_restaurant.serves_gnocchi = False
italian_restaurant.save_base(raw=True)
place2.name='Derelict lot'
place2.save_base(raw=True)
park.capacity = 50
park.save_base(raw=True)
# No extra parent objects after an update, either.
places = list(Place.objects.all())
self.assertEqual(places, [place2, place1])
self.assertEqual(places[0].name, 'Derelict lot')
self.assertEqual(places[1].name, "Guido's All New House of Pasta")
dicts = list(Restaurant.objects.values('name','serves_hot_dogs'))
self.assertEqual(dicts, [{
'name': u"Guido's All New House of Pasta",
'serves_hot_dogs': False,
}])
dicts = list(ItalianRestaurant.objects.values(
'name', 'serves_hot_dogs', 'serves_gnocchi'))
self.assertEqual(dicts, [{
'name': u"Guido's All New House of Pasta",
'serves_gnocchi': False,
'serves_hot_dogs': False,
}])
dicts = list(ParkingLot.objects.values('name','capacity'))
self.assertEqual(dicts, [{
'capacity': 50,
'name': u'Derelict lot',
}])
# If you try to raw_save a parent attribute onto a child object,
# the attribute will be ignored.
italian_restaurant.name = "Lorenzo's Pasta Hut"
italian_restaurant.save_base(raw=True)
# Note that the name has not changed
# - name is an attribute of Place, not ItalianRestaurant
dicts = list(ItalianRestaurant.objects.values(
'name','serves_hot_dogs','serves_gnocchi'))
self.assertEqual(dicts, [{
'name': u"Guido's All New House of Pasta",
'serves_gnocchi': False,
'serves_hot_dogs': False,
}])
def test_issue_7105(self):
# Regressions tests for #7105: dates() queries should be able to use
# fields from the parent model as easily as the child.
obj = Child.objects.create(
name='child',
created=datetime.datetime(2008, 6, 26, 17, 0, 0))
dates = list(Child.objects.dates('created', 'month'))
self.assertEqual(dates, [datetime.datetime(2008, 6, 1, 0, 0)])
def test_issue_7276(self):
# Regression test for #7276: calling delete() on a model with
# multi-table inheritance should delete the associated rows from any
# ancestor tables, as well as any descendent objects.
place1 = Place(
name="Guido's House of Pasta",
address='944 W. Fullerton')
place1.save_base(raw=True)
restaurant = Restaurant(
place_ptr=place1,
serves_hot_dogs=True,
serves_pizza=False)
restaurant.save_base(raw=True)
italian_restaurant = ItalianRestaurant(
restaurant_ptr=restaurant,
serves_gnocchi=True)
italian_restaurant.save_base(raw=True)
ident = ItalianRestaurant.objects.all()[0].id
self.assertEqual(Place.objects.get(pk=ident), place1)
xx = Restaurant.objects.create(
name='a',
address='xx',
serves_hot_dogs=True,
serves_pizza=False)
# This should delete both Restuarants, plus the related places, plus
# the ItalianRestaurant.
Restaurant.objects.all().delete()
self.assertRaises(
Place.DoesNotExist,
Place.objects.get,
pk=ident)
self.assertRaises(
ItalianRestaurant.DoesNotExist,
ItalianRestaurant.objects.get,
pk=ident)
def test_issue_6755(self):
"""
Regression test for #6755
"""
r = Restaurant(serves_pizza=False)
r.save()
self.assertEqual(r.id, r.place_ptr_id)
orig_id = r.id
r = Restaurant(place_ptr_id=orig_id, serves_pizza=True)
r.save()
self.assertEqual(r.id, orig_id)
self.assertEqual(r.id, r.place_ptr_id)
def test_issue_7488(self):
# Regression test for #7488. This looks a little crazy, but it's the
# equivalent of what the admin interface has to do for the edit-inline
# case.
suppliers = Supplier.objects.filter(
restaurant=Restaurant(name='xx', address='yy'))
suppliers = list(suppliers)
self.assertEqual(suppliers, [])
def test_issue_11764(self):
"""
Regression test for #11764
"""
wholesalers = list(Wholesaler.objects.all().select_related())
self.assertEqual(wholesalers, [])
def test_issue_7853(self):
"""
Regression test for #7853
If the parent class has a self-referential link, make sure that any
updates to that link via the child update the right table.
"""
obj = SelfRefChild.objects.create(child_data=37, parent_data=42)
obj.delete()
def test_get_next_previous_by_date(self):
"""
Regression tests for #8076
get_(next/previous)_by_date should work
"""
c1 = ArticleWithAuthor(
headline='ArticleWithAuthor 1',
author="Person 1",
pub_date=datetime.datetime(2005, 8, 1, 3, 0))
c1.save()
c2 = ArticleWithAuthor(
headline='ArticleWithAuthor 2',
author="Person 2",
pub_date=datetime.datetime(2005, 8, 1, 10, 0))
c2.save()
c3 = ArticleWithAuthor(
headline='ArticleWithAuthor 3',
author="Person 3",
pub_date=datetime.datetime(2005, 8, 2))
c3.save()
self.assertEqual(c1.get_next_by_pub_date(), c2)
self.assertEqual(c2.get_next_by_pub_date(), c3)
self.assertRaises(
ArticleWithAuthor.DoesNotExist,
c3.get_next_by_pub_date)
self.assertEqual(c3.get_previous_by_pub_date(), c2)
self.assertEqual(c2.get_previous_by_pub_date(), c1)
self.assertRaises(
ArticleWithAuthor.DoesNotExist,
c1.get_previous_by_pub_date)
def test_inherited_fields(self):
"""
Regression test for #8825 and #9390
Make sure all inherited fields (esp. m2m fields, in this case) appear
on the child class.
"""
m2mchildren = list(M2MChild.objects.filter(articles__isnull=False))
self.assertEqual(m2mchildren, [])
# Ordering should not include any database column more than once (this
# is most likely to ocurr naturally with model inheritance, so we
# check it here). Regression test for #9390. This necessarily pokes at
# the SQL string for the query, since the duplicate problems are only
# apparent at that late stage.
qs = ArticleWithAuthor.objects.order_by('pub_date', 'pk')
sql = qs.query.get_compiler(qs.db).as_sql()[0]
fragment = sql[sql.find('ORDER BY'):]
pos = fragment.find('pub_date')
self.assertEqual(fragment.find('pub_date', pos + 1), -1)
def test_queryset_update_on_parent_model(self):
"""
Regression test for #10362
It is possible to call update() and only change a field in
an ancestor model.
"""
article = ArticleWithAuthor.objects.create(
author="fred",
headline="Hey there!",
pub_date=datetime.datetime(2009, 3, 1, 8, 0, 0))
update = ArticleWithAuthor.objects.filter(
author="fred").update(headline="Oh, no!")
self.assertEqual(update, 1)
update = ArticleWithAuthor.objects.filter(
pk=article.pk).update(headline="Oh, no!")
self.assertEqual(update, 1)
derivedm1 = DerivedM.objects.create(
customPK=44,
base_name="b1",
derived_name="d1")
self.assertEqual(derivedm1.customPK, 44)
self.assertEqual(derivedm1.base_name, 'b1')
self.assertEqual(derivedm1.derived_name, 'd1')
derivedms = list(DerivedM.objects.all())
self.assertEqual(derivedms, [derivedm1])
def test_use_explicit_o2o_to_parent_as_pk(self):
"""
Regression tests for #10406
If there's a one-to-one link between a child model and the parent and
no explicit pk declared, we can use the one-to-one link as the pk on
the child.
"""
self.assertEqual(ParkingLot2._meta.pk.name, "parent")
# However, the connector from child to parent need not be the pk on
# the child at all.
self.assertEqual(ParkingLot3._meta.pk.name, "primary_key")
# the child->parent link
self.assertEqual(
ParkingLot3._meta.get_ancestor_link(Place).name,
"parent")
def test_all_fields_from_abstract_base_class(self):
"""
Regression tests for #7588
"""
# All fields from an ABC, including those inherited non-abstractly
# should be available on child classes (#7588). Creating this instance
# should work without error.
QualityControl.objects.create(
headline="Problems in Django",
pub_date=datetime.datetime.now(),
quality=10,
assignee="adrian")
def test_abstract_base_class_m2m_relation_inheritance(self):
# Check that many-to-many relations defined on an abstract base class
# are correctly inherited (and created) on the child class.
p1 = Person.objects.create(name='Alice')
p2 = Person.objects.create(name='Bob')
p3 = Person.objects.create(name='Carol')
p4 = Person.objects.create(name='Dave')
birthday = BirthdayParty.objects.create(
name='Birthday party for Alice')
birthday.attendees = [p1, p3]
bachelor = BachelorParty.objects.create(name='Bachelor party for Bob')
bachelor.attendees = [p2, p4]
parties = list(p1.birthdayparty_set.all())
self.assertEqual(parties, [birthday])
parties = list(p1.bachelorparty_set.all())
self.assertEqual(parties, [])
parties = list(p2.bachelorparty_set.all())
self.assertEqual(parties, [bachelor])
# Check that a subclass of a subclass of an abstract model doesn't get
# it's own accessor.
self.assertFalse(hasattr(p2, 'messybachelorparty_set'))
# ... but it does inherit the m2m from it's parent
messy = MessyBachelorParty.objects.create(
name='Bachelor party for Dave')
messy.attendees = [p4]
messy_parent = messy.bachelorparty_ptr
parties = list(p4.bachelorparty_set.all())
self.assertEqual(parties, [bachelor, messy_parent])