mirror of
https://github.com/django/django.git
synced 2024-12-30 13:05:45 +00:00
700 lines
22 KiB
Python
700 lines
22 KiB
Python
# -*- encoding: utf-8 -*-
|
|
from __future__ import unicode_literals
|
|
|
|
import unittest
|
|
|
|
from django.conf import settings
|
|
from django.core.checks import Error
|
|
from django.db import connections, models
|
|
from django.test.utils import override_settings
|
|
|
|
from .base import IsolatedModelsTestCase
|
|
|
|
|
|
def get_max_column_name_length():
|
|
allowed_len = None
|
|
db_alias = None
|
|
|
|
for db in settings.DATABASES.keys():
|
|
connection = connections[db]
|
|
max_name_length = connection.ops.max_name_length()
|
|
if max_name_length is None or connection.features.truncates_names:
|
|
continue
|
|
else:
|
|
if allowed_len is None:
|
|
allowed_len = max_name_length
|
|
db_alias = db
|
|
elif max_name_length < allowed_len:
|
|
allowed_len = max_name_length
|
|
db_alias = db
|
|
|
|
return (allowed_len, db_alias)
|
|
|
|
|
|
class IndexTogetherTests(IsolatedModelsTestCase):
|
|
|
|
def test_non_iterable(self):
|
|
class Model(models.Model):
|
|
class Meta:
|
|
index_together = 42
|
|
|
|
errors = Model.check()
|
|
expected = [
|
|
Error(
|
|
"'index_together' must be a list or tuple.",
|
|
hint=None,
|
|
obj=Model,
|
|
id='models.E008',
|
|
),
|
|
]
|
|
self.assertEqual(errors, expected)
|
|
|
|
def test_non_list(self):
|
|
class Model(models.Model):
|
|
class Meta:
|
|
index_together = 'not-a-list'
|
|
|
|
errors = Model.check()
|
|
expected = [
|
|
Error(
|
|
"'index_together' must be a list or tuple.",
|
|
hint=None,
|
|
obj=Model,
|
|
id='models.E008',
|
|
),
|
|
]
|
|
self.assertEqual(errors, expected)
|
|
|
|
def test_list_containing_non_iterable(self):
|
|
class Model(models.Model):
|
|
class Meta:
|
|
index_together = [('a', 'b'), 42]
|
|
|
|
errors = Model.check()
|
|
expected = [
|
|
Error(
|
|
"All 'index_together' elements must be lists or tuples.",
|
|
hint=None,
|
|
obj=Model,
|
|
id='models.E009',
|
|
),
|
|
]
|
|
self.assertEqual(errors, expected)
|
|
|
|
def test_pointing_to_missing_field(self):
|
|
class Model(models.Model):
|
|
class Meta:
|
|
index_together = [
|
|
["missing_field"],
|
|
]
|
|
|
|
errors = Model.check()
|
|
expected = [
|
|
Error(
|
|
"'index_together' refers to the non-existent field 'missing_field'.",
|
|
hint=None,
|
|
obj=Model,
|
|
id='models.E012',
|
|
),
|
|
]
|
|
self.assertEqual(errors, expected)
|
|
|
|
def test_pointing_to_non_local_field(self):
|
|
class Foo(models.Model):
|
|
field1 = models.IntegerField()
|
|
|
|
class Bar(Foo):
|
|
field2 = models.IntegerField()
|
|
|
|
class Meta:
|
|
index_together = [
|
|
["field2", "field1"],
|
|
]
|
|
|
|
errors = Bar.check()
|
|
expected = [
|
|
Error(
|
|
"'index_together' refers to field 'field1' which is not "
|
|
"local to model 'Bar'.",
|
|
hint=("This issue may be caused by multi-table inheritance."),
|
|
obj=Bar,
|
|
id='models.E016',
|
|
),
|
|
]
|
|
self.assertEqual(errors, expected)
|
|
|
|
def test_pointing_to_m2m_field(self):
|
|
class Model(models.Model):
|
|
m2m = models.ManyToManyField('self')
|
|
|
|
class Meta:
|
|
index_together = [
|
|
["m2m"],
|
|
]
|
|
|
|
errors = Model.check()
|
|
expected = [
|
|
Error(
|
|
"'index_together' refers to a ManyToManyField 'm2m', but "
|
|
"ManyToManyFields are not permitted in 'index_together'.",
|
|
hint=None,
|
|
obj=Model,
|
|
id='models.E013',
|
|
),
|
|
]
|
|
self.assertEqual(errors, expected)
|
|
|
|
|
|
# unique_together tests are very similar to index_together tests.
|
|
class UniqueTogetherTests(IsolatedModelsTestCase):
|
|
|
|
def test_non_iterable(self):
|
|
class Model(models.Model):
|
|
class Meta:
|
|
unique_together = 42
|
|
|
|
errors = Model.check()
|
|
expected = [
|
|
Error(
|
|
"'unique_together' must be a list or tuple.",
|
|
hint=None,
|
|
obj=Model,
|
|
id='models.E010',
|
|
),
|
|
]
|
|
self.assertEqual(errors, expected)
|
|
|
|
def test_list_containing_non_iterable(self):
|
|
class Model(models.Model):
|
|
one = models.IntegerField()
|
|
two = models.IntegerField()
|
|
|
|
class Meta:
|
|
unique_together = [('a', 'b'), 42]
|
|
|
|
errors = Model.check()
|
|
expected = [
|
|
Error(
|
|
"All 'unique_together' elements must be lists or tuples.",
|
|
hint=None,
|
|
obj=Model,
|
|
id='models.E011',
|
|
),
|
|
]
|
|
self.assertEqual(errors, expected)
|
|
|
|
def test_non_list(self):
|
|
class Model(models.Model):
|
|
class Meta:
|
|
unique_together = 'not-a-list'
|
|
|
|
errors = Model.check()
|
|
expected = [
|
|
Error(
|
|
"'unique_together' must be a list or tuple.",
|
|
hint=None,
|
|
obj=Model,
|
|
id='models.E010',
|
|
),
|
|
]
|
|
self.assertEqual(errors, expected)
|
|
|
|
def test_valid_model(self):
|
|
class Model(models.Model):
|
|
one = models.IntegerField()
|
|
two = models.IntegerField()
|
|
|
|
class Meta:
|
|
# unique_together can be a simple tuple
|
|
unique_together = ('one', 'two')
|
|
|
|
errors = Model.check()
|
|
self.assertEqual(errors, [])
|
|
|
|
def test_pointing_to_missing_field(self):
|
|
class Model(models.Model):
|
|
class Meta:
|
|
unique_together = [
|
|
["missing_field"],
|
|
]
|
|
|
|
errors = Model.check()
|
|
expected = [
|
|
Error(
|
|
"'unique_together' refers to the non-existent field 'missing_field'.",
|
|
hint=None,
|
|
obj=Model,
|
|
id='models.E012',
|
|
),
|
|
]
|
|
self.assertEqual(errors, expected)
|
|
|
|
def test_pointing_to_m2m(self):
|
|
class Model(models.Model):
|
|
m2m = models.ManyToManyField('self')
|
|
|
|
class Meta:
|
|
unique_together = [
|
|
["m2m"],
|
|
]
|
|
|
|
errors = Model.check()
|
|
expected = [
|
|
Error(
|
|
"'unique_together' refers to a ManyToManyField 'm2m', but "
|
|
"ManyToManyFields are not permitted in 'unique_together'.",
|
|
hint=None,
|
|
obj=Model,
|
|
id='models.E013',
|
|
),
|
|
]
|
|
self.assertEqual(errors, expected)
|
|
|
|
|
|
class FieldNamesTests(IsolatedModelsTestCase):
|
|
|
|
def test_ending_with_underscore(self):
|
|
class Model(models.Model):
|
|
field_ = models.CharField(max_length=10)
|
|
m2m_ = models.ManyToManyField('self')
|
|
|
|
errors = Model.check()
|
|
expected = [
|
|
Error(
|
|
'Field names must not end with an underscore.',
|
|
hint=None,
|
|
obj=Model._meta.get_field('field_'),
|
|
id='fields.E001',
|
|
),
|
|
Error(
|
|
'Field names must not end with an underscore.',
|
|
hint=None,
|
|
obj=Model._meta.get_field('m2m_'),
|
|
id='fields.E001',
|
|
),
|
|
]
|
|
self.assertEqual(errors, expected)
|
|
|
|
max_column_name_length, column_limit_db_alias = get_max_column_name_length()
|
|
|
|
@unittest.skipIf(max_column_name_length is None,
|
|
"The database doesn't have a column name length limit.")
|
|
def test_M2M_long_column_name(self):
|
|
"""
|
|
#13711 -- Model check for long M2M column names when database has
|
|
column name length limits.
|
|
"""
|
|
allowed_len, db_alias = get_max_column_name_length()
|
|
|
|
# A model with very long name which will be used to set relations to.
|
|
class VeryLongModelNamezzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz(models.Model):
|
|
title = models.CharField(max_length=11)
|
|
|
|
# Main model for which checks will be performed.
|
|
class ModelWithLongField(models.Model):
|
|
m2m_field = models.ManyToManyField(
|
|
VeryLongModelNamezzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz,
|
|
related_name="rn1"
|
|
)
|
|
m2m_field2 = models.ManyToManyField(
|
|
VeryLongModelNamezzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz,
|
|
related_name="rn2", through='m2msimple'
|
|
)
|
|
m2m_field3 = models.ManyToManyField(
|
|
VeryLongModelNamezzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz,
|
|
related_name="rn3",
|
|
through='m2mcomplex'
|
|
)
|
|
fk = models.ForeignKey(VeryLongModelNamezzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz, related_name="rn4")
|
|
|
|
# Models used for setting `through` in M2M field.
|
|
class m2msimple(models.Model):
|
|
id2 = models.ForeignKey(ModelWithLongField)
|
|
|
|
class m2mcomplex(models.Model):
|
|
id2 = models.ForeignKey(ModelWithLongField)
|
|
|
|
long_field_name = 'a' * (self.max_column_name_length + 1)
|
|
models.ForeignKey(
|
|
VeryLongModelNamezzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz
|
|
).contribute_to_class(m2msimple, long_field_name)
|
|
|
|
models.ForeignKey(
|
|
VeryLongModelNamezzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz,
|
|
db_column=long_field_name
|
|
).contribute_to_class(m2mcomplex, long_field_name)
|
|
|
|
errors = ModelWithLongField.check()
|
|
|
|
# First error because of M2M field set on the model with long name.
|
|
m2m_long_name = "verylongmodelnamezzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz_id"
|
|
expected = [
|
|
Error(
|
|
'Autogenerated column name too long for M2M field "%s". '
|
|
'Maximum length is "%s" for database "%s".'
|
|
% (m2m_long_name, self.max_column_name_length, self.column_limit_db_alias),
|
|
hint=("Use 'through' to create a separate model for "
|
|
"M2M and then set column_name using 'db_column'."),
|
|
obj=ModelWithLongField,
|
|
id='models.E019',
|
|
)
|
|
]
|
|
|
|
# Second error because the FK specified in the `through` model
|
|
# `m2msimple` has auto-genererated name longer than allowed.
|
|
# There will be no check errors in the other M2M because it
|
|
# specifies db_column for the FK in `through` model even if the actual
|
|
# name is longer than the limits of the database.
|
|
expected.append(
|
|
Error(
|
|
'Autogenerated column name too long for M2M field "%s_id". '
|
|
'Maximum length is "%s" for database "%s".'
|
|
% (long_field_name, self.max_column_name_length, self.column_limit_db_alias),
|
|
hint=("Use 'through' to create a separate model for "
|
|
"M2M and then set column_name using 'db_column'."),
|
|
obj=ModelWithLongField,
|
|
id='models.E019',
|
|
)
|
|
)
|
|
|
|
self.assertEqual(errors, expected)
|
|
|
|
@unittest.skipIf(max_column_name_length is None,
|
|
"The database doesn't have a column name length limit.")
|
|
def test_local_field_long_column_name(self):
|
|
"""
|
|
#13711 -- Model check for long column names
|
|
when database does not support long names.
|
|
"""
|
|
allowed_len, db_alias = get_max_column_name_length()
|
|
|
|
class ModelWithLongField(models.Model):
|
|
title = models.CharField(max_length=11)
|
|
|
|
long_field_name = 'a' * (self.max_column_name_length + 1)
|
|
long_field_name2 = 'b' * (self.max_column_name_length + 1)
|
|
models.CharField(max_length=11).contribute_to_class(ModelWithLongField, long_field_name)
|
|
models.CharField(max_length=11, db_column='vlmn').contribute_to_class(ModelWithLongField, long_field_name2)
|
|
|
|
errors = ModelWithLongField.check()
|
|
|
|
# Error because of the field with long name added to the model
|
|
# without specifying db_column
|
|
expected = [
|
|
Error(
|
|
'Autogenerated column name too long for field "%s". '
|
|
'Maximum length is "%s" for database "%s".'
|
|
% (long_field_name, self.max_column_name_length, self.column_limit_db_alias),
|
|
hint="Set the column name manually using 'db_column'.",
|
|
obj=ModelWithLongField,
|
|
id='models.E018',
|
|
)
|
|
]
|
|
|
|
self.assertEqual(errors, expected)
|
|
|
|
def test_including_separator(self):
|
|
class Model(models.Model):
|
|
some__field = models.IntegerField()
|
|
|
|
errors = Model.check()
|
|
expected = [
|
|
Error(
|
|
'Field names must not contain "__".',
|
|
hint=None,
|
|
obj=Model._meta.get_field('some__field'),
|
|
id='fields.E002',
|
|
)
|
|
]
|
|
self.assertEqual(errors, expected)
|
|
|
|
def test_pk(self):
|
|
class Model(models.Model):
|
|
pk = models.IntegerField()
|
|
|
|
errors = Model.check()
|
|
expected = [
|
|
Error(
|
|
"'pk' is a reserved word that cannot be used as a field name.",
|
|
hint=None,
|
|
obj=Model._meta.get_field('pk'),
|
|
id='fields.E003',
|
|
)
|
|
]
|
|
self.assertEqual(errors, expected)
|
|
|
|
|
|
class ShadowingFieldsTests(IsolatedModelsTestCase):
|
|
|
|
def test_multiinheritance_clash(self):
|
|
class Mother(models.Model):
|
|
clash = models.IntegerField()
|
|
|
|
class Father(models.Model):
|
|
clash = models.IntegerField()
|
|
|
|
class Child(Mother, Father):
|
|
# Here we have two clashed: id (automatic field) and clash, because
|
|
# both parents define these fields.
|
|
pass
|
|
|
|
errors = Child.check()
|
|
expected = [
|
|
Error(
|
|
"The field 'id' from parent model "
|
|
"'invalid_models_tests.mother' clashes with the field 'id' "
|
|
"from parent model 'invalid_models_tests.father'.",
|
|
hint=None,
|
|
obj=Child,
|
|
id='models.E005',
|
|
),
|
|
Error(
|
|
"The field 'clash' from parent model "
|
|
"'invalid_models_tests.mother' clashes with the field 'clash' "
|
|
"from parent model 'invalid_models_tests.father'.",
|
|
hint=None,
|
|
obj=Child,
|
|
id='models.E005',
|
|
)
|
|
]
|
|
self.assertEqual(errors, expected)
|
|
|
|
def test_inheritance_clash(self):
|
|
class Parent(models.Model):
|
|
f_id = models.IntegerField()
|
|
|
|
class Target(models.Model):
|
|
# This field doesn't result in a clash.
|
|
f_id = models.IntegerField()
|
|
|
|
class Child(Parent):
|
|
# This field clashes with parent "f_id" field.
|
|
f = models.ForeignKey(Target)
|
|
|
|
errors = Child.check()
|
|
expected = [
|
|
Error(
|
|
"The field 'f' clashes with the field 'f_id' "
|
|
"from model 'invalid_models_tests.parent'.",
|
|
hint=None,
|
|
obj=Child._meta.get_field('f'),
|
|
id='models.E006',
|
|
)
|
|
]
|
|
self.assertEqual(errors, expected)
|
|
|
|
def test_multigeneration_inheritance(self):
|
|
class GrandParent(models.Model):
|
|
clash = models.IntegerField()
|
|
|
|
class Parent(GrandParent):
|
|
pass
|
|
|
|
class Child(Parent):
|
|
pass
|
|
|
|
class GrandChild(Child):
|
|
clash = models.IntegerField()
|
|
|
|
errors = GrandChild.check()
|
|
expected = [
|
|
Error(
|
|
"The field 'clash' clashes with the field 'clash' "
|
|
"from model 'invalid_models_tests.grandparent'.",
|
|
hint=None,
|
|
obj=GrandChild._meta.get_field('clash'),
|
|
id='models.E006',
|
|
)
|
|
]
|
|
self.assertEqual(errors, expected)
|
|
|
|
def test_id_clash(self):
|
|
class Target(models.Model):
|
|
pass
|
|
|
|
class Model(models.Model):
|
|
fk = models.ForeignKey(Target)
|
|
fk_id = models.IntegerField()
|
|
|
|
errors = Model.check()
|
|
expected = [
|
|
Error(
|
|
"The field 'fk_id' clashes with the field 'fk' from model "
|
|
"'invalid_models_tests.model'.",
|
|
hint=None,
|
|
obj=Model._meta.get_field('fk_id'),
|
|
id='models.E006',
|
|
)
|
|
]
|
|
self.assertEqual(errors, expected)
|
|
|
|
|
|
class OtherModelTests(IsolatedModelsTestCase):
|
|
|
|
def test_unique_primary_key(self):
|
|
invalid_id = models.IntegerField(primary_key=False)
|
|
|
|
class Model(models.Model):
|
|
id = invalid_id
|
|
|
|
errors = Model.check()
|
|
expected = [
|
|
Error(
|
|
"'id' can only be used as a field name if the field also sets "
|
|
"'primary_key=True'.",
|
|
hint=None,
|
|
obj=Model,
|
|
id='models.E004',
|
|
),
|
|
]
|
|
self.assertEqual(errors, expected)
|
|
|
|
def test_ordering_non_iterable(self):
|
|
class Model(models.Model):
|
|
class Meta:
|
|
ordering = "missing_field"
|
|
|
|
errors = Model.check()
|
|
expected = [
|
|
Error(
|
|
"'ordering' must be a tuple or list "
|
|
"(even if you want to order by only one field).",
|
|
hint=None,
|
|
obj=Model,
|
|
id='models.E014',
|
|
),
|
|
]
|
|
self.assertEqual(errors, expected)
|
|
|
|
def test_non_valid(self):
|
|
class RelationModel(models.Model):
|
|
pass
|
|
|
|
class Model(models.Model):
|
|
relation = models.ManyToManyField(RelationModel)
|
|
|
|
class Meta:
|
|
ordering = ['relation']
|
|
|
|
errors = Model.check()
|
|
expected = [
|
|
Error(
|
|
"'ordering' refers to the non-existent field 'relation'.",
|
|
hint=None,
|
|
obj=Model,
|
|
id='models.E015',
|
|
),
|
|
]
|
|
self.assertEqual(errors, expected)
|
|
|
|
def test_ordering_pointing_to_missing_field(self):
|
|
class Model(models.Model):
|
|
class Meta:
|
|
ordering = ("missing_field",)
|
|
|
|
errors = Model.check()
|
|
expected = [
|
|
Error(
|
|
"'ordering' refers to the non-existent field 'missing_field'.",
|
|
hint=None,
|
|
obj=Model,
|
|
id='models.E015',
|
|
)
|
|
]
|
|
self.assertEqual(errors, expected)
|
|
|
|
def test_ordering_pointing_to_missing_foreignkey_field(self):
|
|
# refs #22711
|
|
|
|
class Model(models.Model):
|
|
missing_fk_field = models.IntegerField()
|
|
|
|
class Meta:
|
|
ordering = ("missing_fk_field_id",)
|
|
|
|
errors = Model.check()
|
|
expected = [
|
|
Error(
|
|
"'ordering' refers to the non-existent field 'missing_fk_field_id'.",
|
|
hint=None,
|
|
obj=Model,
|
|
id='models.E015',
|
|
)
|
|
]
|
|
self.assertEqual(errors, expected)
|
|
|
|
def test_ordering_pointing_to_existing_foreignkey_field(self):
|
|
# refs #22711
|
|
|
|
class Parent(models.Model):
|
|
pass
|
|
|
|
class Child(models.Model):
|
|
parent = models.ForeignKey(Parent)
|
|
|
|
class Meta:
|
|
ordering = ("parent_id",)
|
|
|
|
self.assertFalse(Child.check())
|
|
|
|
@override_settings(TEST_SWAPPED_MODEL_BAD_VALUE='not-a-model')
|
|
def test_swappable_missing_app_name(self):
|
|
class Model(models.Model):
|
|
class Meta:
|
|
swappable = 'TEST_SWAPPED_MODEL_BAD_VALUE'
|
|
|
|
errors = Model.check()
|
|
expected = [
|
|
Error(
|
|
"'TEST_SWAPPED_MODEL_BAD_VALUE' is not of the form 'app_label.app_name'.",
|
|
hint=None,
|
|
obj=None,
|
|
id='models.E001',
|
|
),
|
|
]
|
|
self.assertEqual(errors, expected)
|
|
|
|
@override_settings(TEST_SWAPPED_MODEL_BAD_MODEL='not_an_app.Target')
|
|
def test_swappable_missing_app(self):
|
|
class Model(models.Model):
|
|
class Meta:
|
|
swappable = 'TEST_SWAPPED_MODEL_BAD_MODEL'
|
|
|
|
errors = Model.check()
|
|
expected = [
|
|
Error(
|
|
"'TEST_SWAPPED_MODEL_BAD_MODEL' references 'not_an_app.Target', "
|
|
'which has not been installed, or is abstract.',
|
|
hint=None,
|
|
obj=None,
|
|
id='models.E002',
|
|
),
|
|
]
|
|
self.assertEqual(errors, expected)
|
|
|
|
def test_two_m2m_through_same_relationship(self):
|
|
class Person(models.Model):
|
|
pass
|
|
|
|
class Group(models.Model):
|
|
primary = models.ManyToManyField(Person,
|
|
through="Membership", related_name="primary")
|
|
secondary = models.ManyToManyField(Person, through="Membership",
|
|
related_name="secondary")
|
|
|
|
class Membership(models.Model):
|
|
person = models.ForeignKey(Person)
|
|
group = models.ForeignKey(Group)
|
|
|
|
errors = Group.check()
|
|
expected = [
|
|
Error(
|
|
"The model has two many-to-many relations through "
|
|
"the intermediate model 'invalid_models_tests.Membership'.",
|
|
hint=None,
|
|
obj=Group,
|
|
id='models.E003',
|
|
)
|
|
]
|
|
self.assertEqual(errors, expected)
|