mirror of
https://github.com/django/django.git
synced 2024-12-30 21:16:26 +00:00
71 lines
2.3 KiB
Python
71 lines
2.3 KiB
Python
from django.db import DatabaseError, IntegrityError, transaction
|
|
from django.test import TestCase
|
|
|
|
from .models import (
|
|
Counter, InheritedCounter, ProxyCounter, SubCounter, WithCustomPK,
|
|
)
|
|
|
|
|
|
class ForceTests(TestCase):
|
|
def test_force_update(self):
|
|
c = Counter.objects.create(name="one", value=1)
|
|
|
|
# The normal case
|
|
c.value = 2
|
|
c.save()
|
|
# Same thing, via an update
|
|
c.value = 3
|
|
c.save(force_update=True)
|
|
|
|
# Won't work because force_update and force_insert are mutually
|
|
# exclusive
|
|
c.value = 4
|
|
msg = 'Cannot force both insert and updating in model saving.'
|
|
with self.assertRaisesMessage(ValueError, msg):
|
|
c.save(force_insert=True, force_update=True)
|
|
|
|
# Try to update something that doesn't have a primary key in the first
|
|
# place.
|
|
c1 = Counter(name="two", value=2)
|
|
msg = 'Cannot force an update in save() with no primary key.'
|
|
with self.assertRaisesMessage(ValueError, msg):
|
|
with transaction.atomic():
|
|
c1.save(force_update=True)
|
|
c1.save(force_insert=True)
|
|
|
|
# Won't work because we can't insert a pk of the same value.
|
|
c.value = 5
|
|
with self.assertRaises(IntegrityError):
|
|
with transaction.atomic():
|
|
c.save(force_insert=True)
|
|
|
|
# Trying to update should still fail, even with manual primary keys, if
|
|
# the data isn't in the database already.
|
|
obj = WithCustomPK(name=1, value=1)
|
|
msg = 'Forced update did not affect any rows.'
|
|
with self.assertRaisesMessage(DatabaseError, msg):
|
|
with transaction.atomic():
|
|
obj.save(force_update=True)
|
|
|
|
|
|
class InheritanceTests(TestCase):
|
|
def test_force_update_on_inherited_model(self):
|
|
a = InheritedCounter(name="count", value=1, tag="spam")
|
|
a.save()
|
|
a.save(force_update=True)
|
|
|
|
def test_force_update_on_proxy_model(self):
|
|
a = ProxyCounter(name="count", value=1)
|
|
a.save()
|
|
a.save(force_update=True)
|
|
|
|
def test_force_update_on_inherited_model_without_fields(self):
|
|
'''
|
|
Issue 13864: force_update fails on subclassed models, if they don't
|
|
specify custom fields.
|
|
'''
|
|
a = SubCounter(name="count", value=1)
|
|
a.save()
|
|
a.value = 2
|
|
a.save(force_update=True)
|