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from django.core.exceptions import ImproperlyConfigured
from django.db import models
from django.test import SimpleTestCase, override_settings
from django.test.utils import isolate_apps
class MyBigAutoField(models.BigAutoField):
pass
@isolate_apps('model_options')
class TestDefaultPK(SimpleTestCase):
@override_settings(DEFAULT_AUTO_FIELD='django.db.models.NonexistentAutoField')
def test_default_auto_field_setting_nonexistent(self):
msg = (
"DEFAULT_AUTO_FIELD refers to the module "
"'django.db.models.NonexistentAutoField' that could not be "
"imported."
)
with self.assertRaisesMessage(ImproperlyConfigured, msg):
class Model(models.Model):
pass
@isolate_apps('model_options.apps.ModelPKNonexistentConfig')
def test_app_default_auto_field_nonexistent(self):
msg = (
"model_options.apps.ModelPKNonexistentConfig.default_auto_field "
"refers to the module 'django.db.models.NonexistentAutoField' "
"that could not be imported."
)
with self.assertRaisesMessage(ImproperlyConfigured, msg):
class Model(models.Model):
pass
@override_settings(DEFAULT_AUTO_FIELD='django.db.models.TextField')
def test_default_auto_field_setting_non_auto(self):
msg = (
"Primary key 'django.db.models.TextField' referred by "
"DEFAULT_AUTO_FIELD must subclass AutoField."
)
with self.assertRaisesMessage(ValueError, msg):
class Model(models.Model):
pass
@isolate_apps('model_options.apps.ModelPKNonAutoConfig')
def test_app_default_auto_field_non_auto(self):
msg = (
"Primary key 'django.db.models.TextField' referred by "
"model_options.apps.ModelPKNonAutoConfig.default_auto_field must "
"subclass AutoField."
)
with self.assertRaisesMessage(ValueError, msg):
class Model(models.Model):
pass
@override_settings(DEFAULT_AUTO_FIELD=None)
def test_default_auto_field_setting_none(self):
msg = 'DEFAULT_AUTO_FIELD must not be empty.'
with self.assertRaisesMessage(ImproperlyConfigured, msg):
class Model(models.Model):
pass
@isolate_apps('model_options.apps.ModelPKNoneConfig')
def test_app_default_auto_field_none(self):
msg = (
'model_options.apps.ModelPKNoneConfig.default_auto_field must not '
'be empty.'
)
with self.assertRaisesMessage(ImproperlyConfigured, msg):
class Model(models.Model):
pass
@isolate_apps('model_options.apps.ModelDefaultPKConfig')
@override_settings(DEFAULT_AUTO_FIELD='django.db.models.SmallAutoField')
def test_default_auto_field_setting(self):
class Model(models.Model):
pass
self.assertIsInstance(Model._meta.pk, models.SmallAutoField)
@override_settings(
DEFAULT_AUTO_FIELD='model_options.test_default_pk.MyBigAutoField'
)
def test_default_auto_field_setting_bigautofield_subclass(self):
class Model(models.Model):
pass
self.assertIsInstance(Model._meta.pk, MyBigAutoField)
@isolate_apps('model_options.apps.ModelPKConfig')
@override_settings(DEFAULT_AUTO_FIELD='django.db.models.AutoField')
def test_app_default_auto_field(self):
class Model(models.Model):
pass
self.assertIsInstance(Model._meta.pk, models.SmallAutoField)
@isolate_apps('model_options.apps.ModelDefaultPKConfig')
@override_settings(DEFAULT_AUTO_FIELD='django.db.models.SmallAutoField')
def test_m2m_default_auto_field_setting(self):
class M2MModel(models.Model):
m2m = models.ManyToManyField('self')
m2m_pk = M2MModel._meta.get_field('m2m').remote_field.through._meta.pk
self.assertIsInstance(m2m_pk, models.SmallAutoField)
@isolate_apps('model_options.apps.ModelPKConfig')
@override_settings(DEFAULT_AUTO_FIELD='django.db.models.AutoField')
def test_m2m_app_default_auto_field(self):
class M2MModel(models.Model):
m2m = models.ManyToManyField('self')
m2m_pk = M2MModel._meta.get_field('m2m').remote_field.through._meta.pk
self.assertIsInstance(m2m_pk, models.SmallAutoField)
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