1571 lines
52 KiB
Python
1571 lines
52 KiB
Python
import unittest
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from django.core.checks import Error, Warning
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from django.core.checks.model_checks import _check_lazy_references
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from django.db import connection, connections, models
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from django.db.models.functions import Lower
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from django.db.models.signals import post_init
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from django.test import SimpleTestCase, TestCase, skipUnlessDBFeature
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from django.test.utils import isolate_apps, override_settings, register_lookup
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class EmptyRouter:
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pass
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def get_max_column_name_length():
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allowed_len = None
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db_alias = None
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for db in ('default', 'other'):
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connection = connections[db]
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max_name_length = connection.ops.max_name_length()
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if max_name_length is not None and not connection.features.truncates_names:
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if allowed_len is None or max_name_length < allowed_len:
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allowed_len = max_name_length
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db_alias = db
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return (allowed_len, db_alias)
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@isolate_apps('invalid_models_tests')
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class IndexTogetherTests(SimpleTestCase):
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def test_non_iterable(self):
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class Model(models.Model):
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class Meta:
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index_together = 42
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self.assertEqual(Model.check(), [
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Error(
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"'index_together' must be a list or tuple.",
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obj=Model,
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id='models.E008',
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),
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])
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def test_non_list(self):
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class Model(models.Model):
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class Meta:
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index_together = 'not-a-list'
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self.assertEqual(Model.check(), [
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Error(
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"'index_together' must be a list or tuple.",
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obj=Model,
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id='models.E008',
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),
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])
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def test_list_containing_non_iterable(self):
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class Model(models.Model):
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class Meta:
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index_together = [('a', 'b'), 42]
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self.assertEqual(Model.check(), [
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Error(
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"All 'index_together' elements must be lists or tuples.",
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obj=Model,
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id='models.E009',
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),
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])
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def test_pointing_to_missing_field(self):
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class Model(models.Model):
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class Meta:
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index_together = [['missing_field']]
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self.assertEqual(Model.check(), [
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Error(
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"'index_together' refers to the nonexistent field 'missing_field'.",
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obj=Model,
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id='models.E012',
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),
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])
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def test_pointing_to_non_local_field(self):
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class Foo(models.Model):
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field1 = models.IntegerField()
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class Bar(Foo):
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field2 = models.IntegerField()
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class Meta:
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index_together = [['field2', 'field1']]
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self.assertEqual(Bar.check(), [
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Error(
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"'index_together' refers to field 'field1' which is not "
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"local to model 'Bar'.",
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hint='This issue may be caused by multi-table inheritance.',
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obj=Bar,
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id='models.E016',
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),
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])
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def test_pointing_to_m2m_field(self):
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class Model(models.Model):
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m2m = models.ManyToManyField('self')
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class Meta:
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index_together = [['m2m']]
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self.assertEqual(Model.check(), [
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Error(
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"'index_together' refers to a ManyToManyField 'm2m', but "
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"ManyToManyFields are not permitted in 'index_together'.",
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obj=Model,
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id='models.E013',
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),
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])
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def test_pointing_to_fk(self):
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class Foo(models.Model):
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pass
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class Bar(models.Model):
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foo_1 = models.ForeignKey(Foo, on_delete=models.CASCADE, related_name='bar_1')
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foo_2 = models.ForeignKey(Foo, on_delete=models.CASCADE, related_name='bar_2')
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class Meta:
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index_together = [['foo_1_id', 'foo_2']]
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self.assertEqual(Bar.check(), [])
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# unique_together tests are very similar to index_together tests.
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@isolate_apps('invalid_models_tests')
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class UniqueTogetherTests(SimpleTestCase):
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def test_non_iterable(self):
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class Model(models.Model):
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class Meta:
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unique_together = 42
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self.assertEqual(Model.check(), [
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Error(
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"'unique_together' must be a list or tuple.",
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obj=Model,
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id='models.E010',
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),
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])
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def test_list_containing_non_iterable(self):
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class Model(models.Model):
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one = models.IntegerField()
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two = models.IntegerField()
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class Meta:
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unique_together = [('a', 'b'), 42]
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self.assertEqual(Model.check(), [
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Error(
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"All 'unique_together' elements must be lists or tuples.",
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obj=Model,
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id='models.E011',
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),
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])
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def test_non_list(self):
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class Model(models.Model):
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class Meta:
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unique_together = 'not-a-list'
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self.assertEqual(Model.check(), [
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Error(
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"'unique_together' must be a list or tuple.",
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obj=Model,
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id='models.E010',
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),
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])
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def test_valid_model(self):
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class Model(models.Model):
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one = models.IntegerField()
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two = models.IntegerField()
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class Meta:
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# unique_together can be a simple tuple
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unique_together = ('one', 'two')
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self.assertEqual(Model.check(), [])
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def test_pointing_to_missing_field(self):
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class Model(models.Model):
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class Meta:
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unique_together = [['missing_field']]
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self.assertEqual(Model.check(), [
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Error(
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"'unique_together' refers to the nonexistent field 'missing_field'.",
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obj=Model,
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id='models.E012',
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),
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])
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def test_pointing_to_m2m(self):
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class Model(models.Model):
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m2m = models.ManyToManyField('self')
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class Meta:
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unique_together = [['m2m']]
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self.assertEqual(Model.check(), [
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Error(
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"'unique_together' refers to a ManyToManyField 'm2m', but "
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"ManyToManyFields are not permitted in 'unique_together'.",
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obj=Model,
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id='models.E013',
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),
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])
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def test_pointing_to_fk(self):
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class Foo(models.Model):
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pass
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class Bar(models.Model):
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foo_1 = models.ForeignKey(Foo, on_delete=models.CASCADE, related_name='bar_1')
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foo_2 = models.ForeignKey(Foo, on_delete=models.CASCADE, related_name='bar_2')
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class Meta:
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unique_together = [['foo_1_id', 'foo_2']]
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self.assertEqual(Bar.check(), [])
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@isolate_apps('invalid_models_tests')
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class IndexesTests(TestCase):
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def test_pointing_to_missing_field(self):
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class Model(models.Model):
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class Meta:
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indexes = [models.Index(fields=['missing_field'], name='name')]
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self.assertEqual(Model.check(), [
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Error(
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"'indexes' refers to the nonexistent field 'missing_field'.",
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obj=Model,
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id='models.E012',
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),
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])
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def test_pointing_to_m2m_field(self):
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class Model(models.Model):
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m2m = models.ManyToManyField('self')
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class Meta:
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indexes = [models.Index(fields=['m2m'], name='name')]
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self.assertEqual(Model.check(), [
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Error(
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"'indexes' refers to a ManyToManyField 'm2m', but "
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"ManyToManyFields are not permitted in 'indexes'.",
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obj=Model,
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id='models.E013',
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),
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])
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def test_pointing_to_non_local_field(self):
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class Foo(models.Model):
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field1 = models.IntegerField()
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class Bar(Foo):
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field2 = models.IntegerField()
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class Meta:
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indexes = [models.Index(fields=['field2', 'field1'], name='name')]
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self.assertEqual(Bar.check(), [
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Error(
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"'indexes' refers to field 'field1' which is not local to "
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"model 'Bar'.",
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hint='This issue may be caused by multi-table inheritance.',
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obj=Bar,
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id='models.E016',
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),
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])
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def test_pointing_to_fk(self):
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class Foo(models.Model):
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pass
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class Bar(models.Model):
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foo_1 = models.ForeignKey(Foo, on_delete=models.CASCADE, related_name='bar_1')
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foo_2 = models.ForeignKey(Foo, on_delete=models.CASCADE, related_name='bar_2')
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class Meta:
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indexes = [models.Index(fields=['foo_1_id', 'foo_2'], name='index_name')]
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self.assertEqual(Bar.check(), [])
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def test_name_constraints(self):
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class Model(models.Model):
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class Meta:
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indexes = [
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models.Index(fields=['id'], name='_index_name'),
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models.Index(fields=['id'], name='5index_name'),
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]
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self.assertEqual(Model.check(), [
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Error(
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"The index name '%sindex_name' cannot start with an "
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"underscore or a number." % prefix,
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obj=Model,
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id='models.E033',
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) for prefix in ('_', '5')
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])
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def test_max_name_length(self):
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index_name = 'x' * 31
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class Model(models.Model):
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class Meta:
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indexes = [models.Index(fields=['id'], name=index_name)]
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self.assertEqual(Model.check(), [
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Error(
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"The index name '%s' cannot be longer than 30 characters."
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% index_name,
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obj=Model,
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id='models.E034',
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),
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])
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def test_index_with_condition(self):
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class Model(models.Model):
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age = models.IntegerField()
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class Meta:
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indexes = [
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models.Index(
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fields=['age'],
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name='index_age_gte_10',
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condition=models.Q(age__gte=10),
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),
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]
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errors = Model.check(databases=self.databases)
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expected = [] if connection.features.supports_partial_indexes else [
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Warning(
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'%s does not support indexes with conditions.'
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% connection.display_name,
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hint=(
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"Conditions will be ignored. Silence this warning if you "
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"don't care about it."
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),
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obj=Model,
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id='models.W037',
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)
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]
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self.assertEqual(errors, expected)
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def test_index_with_condition_required_db_features(self):
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class Model(models.Model):
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age = models.IntegerField()
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class Meta:
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required_db_features = {'supports_partial_indexes'}
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indexes = [
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models.Index(
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fields=['age'],
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name='index_age_gte_10',
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condition=models.Q(age__gte=10),
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),
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]
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self.assertEqual(Model.check(databases=self.databases), [])
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@isolate_apps('invalid_models_tests')
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class FieldNamesTests(TestCase):
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databases = {'default', 'other'}
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def test_ending_with_underscore(self):
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class Model(models.Model):
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field_ = models.CharField(max_length=10)
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m2m_ = models.ManyToManyField('self')
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self.assertEqual(Model.check(), [
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Error(
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'Field names must not end with an underscore.',
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obj=Model._meta.get_field('field_'),
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id='fields.E001',
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),
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Error(
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'Field names must not end with an underscore.',
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obj=Model._meta.get_field('m2m_'),
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id='fields.E001',
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),
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])
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max_column_name_length, column_limit_db_alias = get_max_column_name_length()
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@unittest.skipIf(max_column_name_length is None, "The database doesn't have a column name length limit.")
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def test_M2M_long_column_name(self):
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"""
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#13711 -- Model check for long M2M column names when database has
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column name length limits.
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"""
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# A model with very long name which will be used to set relations to.
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class VeryLongModelNamezzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz(models.Model):
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title = models.CharField(max_length=11)
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# Main model for which checks will be performed.
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class ModelWithLongField(models.Model):
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m2m_field = models.ManyToManyField(
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VeryLongModelNamezzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz,
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related_name='rn1',
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)
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m2m_field2 = models.ManyToManyField(
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VeryLongModelNamezzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz,
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related_name='rn2', through='m2msimple',
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)
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m2m_field3 = models.ManyToManyField(
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VeryLongModelNamezzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz,
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related_name='rn3',
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through='m2mcomplex',
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)
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fk = models.ForeignKey(
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VeryLongModelNamezzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz,
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models.CASCADE,
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related_name='rn4',
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)
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# Models used for setting `through` in M2M field.
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class m2msimple(models.Model):
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id2 = models.ForeignKey(ModelWithLongField, models.CASCADE)
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class m2mcomplex(models.Model):
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id2 = models.ForeignKey(ModelWithLongField, models.CASCADE)
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long_field_name = 'a' * (self.max_column_name_length + 1)
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models.ForeignKey(
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VeryLongModelNamezzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz,
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models.CASCADE,
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).contribute_to_class(m2msimple, long_field_name)
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models.ForeignKey(
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VeryLongModelNamezzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz,
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models.CASCADE,
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db_column=long_field_name
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).contribute_to_class(m2mcomplex, long_field_name)
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errors = ModelWithLongField.check(databases=('default', 'other'))
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# First error because of M2M field set on the model with long name.
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m2m_long_name = "verylongmodelnamezzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz_id"
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if self.max_column_name_length > len(m2m_long_name):
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# Some databases support names longer than the test name.
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expected = []
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else:
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expected = [
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Error(
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'Autogenerated column name too long for M2M field "%s". '
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'Maximum length is "%s" for database "%s".'
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% (m2m_long_name, self.max_column_name_length, self.column_limit_db_alias),
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hint="Use 'through' to create a separate model for "
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"M2M and then set column_name using 'db_column'.",
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obj=ModelWithLongField,
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id='models.E019',
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)
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]
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# Second error because the FK specified in the `through` model
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# `m2msimple` has auto-generated name longer than allowed.
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# There will be no check errors in the other M2M because it
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# specifies db_column for the FK in `through` model even if the actual
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# name is longer than the limits of the database.
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expected.append(
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Error(
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'Autogenerated column name too long for M2M field "%s_id". '
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'Maximum length is "%s" for database "%s".'
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% (long_field_name, self.max_column_name_length, self.column_limit_db_alias),
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hint="Use 'through' to create a separate model for "
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"M2M and then set column_name using 'db_column'.",
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obj=ModelWithLongField,
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id='models.E019',
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)
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)
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self.assertEqual(errors, expected)
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# Check for long column names is called only for specified database
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# aliases.
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self.assertEqual(ModelWithLongField.check(databases=None), [])
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|
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@unittest.skipIf(max_column_name_length is None, "The database doesn't have a column name length limit.")
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def test_local_field_long_column_name(self):
|
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"""
|
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#13711 -- Model check for long column names
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when database does not support long names.
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"""
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class ModelWithLongField(models.Model):
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title = models.CharField(max_length=11)
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long_field_name = 'a' * (self.max_column_name_length + 1)
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long_field_name2 = 'b' * (self.max_column_name_length + 1)
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models.CharField(max_length=11).contribute_to_class(ModelWithLongField, long_field_name)
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models.CharField(max_length=11, db_column='vlmn').contribute_to_class(ModelWithLongField, long_field_name2)
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self.assertEqual(ModelWithLongField.check(databases=('default', 'other')), [
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Error(
|
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'Autogenerated column name too long for field "%s". '
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'Maximum length is "%s" for database "%s".'
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% (long_field_name, self.max_column_name_length, self.column_limit_db_alias),
|
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hint="Set the column name manually using 'db_column'.",
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obj=ModelWithLongField,
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id='models.E018',
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)
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])
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# Check for long column names is called only for specified database
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# aliases.
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self.assertEqual(ModelWithLongField.check(databases=None), [])
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|
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def test_including_separator(self):
|
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class Model(models.Model):
|
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some__field = models.IntegerField()
|
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|
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self.assertEqual(Model.check(), [
|
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Error(
|
|
'Field names must not contain "__".',
|
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obj=Model._meta.get_field('some__field'),
|
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id='fields.E002',
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)
|
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])
|
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|
|
def test_pk(self):
|
|
class Model(models.Model):
|
|
pk = models.IntegerField()
|
|
|
|
self.assertEqual(Model.check(), [
|
|
Error(
|
|
"'pk' is a reserved word that cannot be used as a field name.",
|
|
obj=Model._meta.get_field('pk'),
|
|
id='fields.E003',
|
|
)
|
|
])
|
|
|
|
def test_db_column_clash(self):
|
|
class Model(models.Model):
|
|
foo = models.IntegerField()
|
|
bar = models.IntegerField(db_column='foo')
|
|
|
|
self.assertEqual(Model.check(), [
|
|
Error(
|
|
"Field 'bar' has column name 'foo' that is used by "
|
|
"another field.",
|
|
hint="Specify a 'db_column' for the field.",
|
|
obj=Model,
|
|
id='models.E007',
|
|
)
|
|
])
|
|
|
|
|
|
@isolate_apps('invalid_models_tests')
|
|
class ShadowingFieldsTests(SimpleTestCase):
|
|
|
|
def test_field_name_clash_with_child_accessor(self):
|
|
class Parent(models.Model):
|
|
pass
|
|
|
|
class Child(Parent):
|
|
child = models.CharField(max_length=100)
|
|
|
|
self.assertEqual(Child.check(), [
|
|
Error(
|
|
"The field 'child' clashes with the field "
|
|
"'child' from model 'invalid_models_tests.parent'.",
|
|
obj=Child._meta.get_field('child'),
|
|
id='models.E006',
|
|
)
|
|
])
|
|
|
|
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
|
|
|
|
self.assertEqual(Child.check(), [
|
|
Error(
|
|
"The field 'id' from parent model "
|
|
"'invalid_models_tests.mother' clashes with the field 'id' "
|
|
"from parent model 'invalid_models_tests.father'.",
|
|
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'.",
|
|
obj=Child,
|
|
id='models.E005',
|
|
)
|
|
])
|
|
|
|
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, models.CASCADE)
|
|
|
|
self.assertEqual(Child.check(), [
|
|
Error(
|
|
"The field 'f' clashes with the field 'f_id' "
|
|
"from model 'invalid_models_tests.parent'.",
|
|
obj=Child._meta.get_field('f'),
|
|
id='models.E006',
|
|
)
|
|
])
|
|
|
|
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()
|
|
|
|
self.assertEqual(GrandChild.check(), [
|
|
Error(
|
|
"The field 'clash' clashes with the field 'clash' "
|
|
"from model 'invalid_models_tests.grandparent'.",
|
|
obj=GrandChild._meta.get_field('clash'),
|
|
id='models.E006',
|
|
)
|
|
])
|
|
|
|
def test_id_clash(self):
|
|
class Target(models.Model):
|
|
pass
|
|
|
|
class Model(models.Model):
|
|
fk = models.ForeignKey(Target, models.CASCADE)
|
|
fk_id = models.IntegerField()
|
|
|
|
self.assertEqual(Model.check(), [
|
|
Error(
|
|
"The field 'fk_id' clashes with the field 'fk' from model "
|
|
"'invalid_models_tests.model'.",
|
|
obj=Model._meta.get_field('fk_id'),
|
|
id='models.E006',
|
|
)
|
|
])
|
|
|
|
|
|
@isolate_apps('invalid_models_tests')
|
|
class OtherModelTests(SimpleTestCase):
|
|
|
|
def test_unique_primary_key(self):
|
|
invalid_id = models.IntegerField(primary_key=False)
|
|
|
|
class Model(models.Model):
|
|
id = invalid_id
|
|
|
|
self.assertEqual(Model.check(), [
|
|
Error(
|
|
"'id' can only be used as a field name if the field also sets "
|
|
"'primary_key=True'.",
|
|
obj=Model,
|
|
id='models.E004',
|
|
),
|
|
])
|
|
|
|
def test_ordering_non_iterable(self):
|
|
class Model(models.Model):
|
|
class Meta:
|
|
ordering = 'missing_field'
|
|
|
|
self.assertEqual(Model.check(), [
|
|
Error(
|
|
"'ordering' must be a tuple or list "
|
|
"(even if you want to order by only one field).",
|
|
obj=Model,
|
|
id='models.E014',
|
|
),
|
|
])
|
|
|
|
def test_just_ordering_no_errors(self):
|
|
class Model(models.Model):
|
|
order = models.PositiveIntegerField()
|
|
|
|
class Meta:
|
|
ordering = ['order']
|
|
|
|
self.assertEqual(Model.check(), [])
|
|
|
|
def test_just_order_with_respect_to_no_errors(self):
|
|
class Question(models.Model):
|
|
pass
|
|
|
|
class Answer(models.Model):
|
|
question = models.ForeignKey(Question, models.CASCADE)
|
|
|
|
class Meta:
|
|
order_with_respect_to = 'question'
|
|
|
|
self.assertEqual(Answer.check(), [])
|
|
|
|
def test_ordering_with_order_with_respect_to(self):
|
|
class Question(models.Model):
|
|
pass
|
|
|
|
class Answer(models.Model):
|
|
question = models.ForeignKey(Question, models.CASCADE)
|
|
order = models.IntegerField()
|
|
|
|
class Meta:
|
|
order_with_respect_to = 'question'
|
|
ordering = ['order']
|
|
|
|
self.assertEqual(Answer.check(), [
|
|
Error(
|
|
"'ordering' and 'order_with_respect_to' cannot be used together.",
|
|
obj=Answer,
|
|
id='models.E021',
|
|
),
|
|
])
|
|
|
|
def test_non_valid(self):
|
|
class RelationModel(models.Model):
|
|
pass
|
|
|
|
class Model(models.Model):
|
|
relation = models.ManyToManyField(RelationModel)
|
|
|
|
class Meta:
|
|
ordering = ['relation']
|
|
|
|
self.assertEqual(Model.check(), [
|
|
Error(
|
|
"'ordering' refers to the nonexistent field, related field, "
|
|
"or lookup 'relation'.",
|
|
obj=Model,
|
|
id='models.E015',
|
|
),
|
|
])
|
|
|
|
def test_ordering_pointing_to_missing_field(self):
|
|
class Model(models.Model):
|
|
class Meta:
|
|
ordering = ('missing_field',)
|
|
|
|
self.assertEqual(Model.check(), [
|
|
Error(
|
|
"'ordering' refers to the nonexistent field, related field, "
|
|
"or lookup 'missing_field'.",
|
|
obj=Model,
|
|
id='models.E015',
|
|
)
|
|
])
|
|
|
|
def test_ordering_pointing_to_missing_foreignkey_field(self):
|
|
class Model(models.Model):
|
|
missing_fk_field = models.IntegerField()
|
|
|
|
class Meta:
|
|
ordering = ('missing_fk_field_id',)
|
|
|
|
self.assertEqual(Model.check(), [
|
|
Error(
|
|
"'ordering' refers to the nonexistent field, related field, "
|
|
"or lookup 'missing_fk_field_id'.",
|
|
obj=Model,
|
|
id='models.E015',
|
|
)
|
|
])
|
|
|
|
def test_ordering_pointing_to_missing_related_field(self):
|
|
class Model(models.Model):
|
|
test = models.IntegerField()
|
|
|
|
class Meta:
|
|
ordering = ('missing_related__id',)
|
|
|
|
self.assertEqual(Model.check(), [
|
|
Error(
|
|
"'ordering' refers to the nonexistent field, related field, "
|
|
"or lookup 'missing_related__id'.",
|
|
obj=Model,
|
|
id='models.E015',
|
|
)
|
|
])
|
|
|
|
def test_ordering_pointing_to_missing_related_model_field(self):
|
|
class Parent(models.Model):
|
|
pass
|
|
|
|
class Child(models.Model):
|
|
parent = models.ForeignKey(Parent, models.CASCADE)
|
|
|
|
class Meta:
|
|
ordering = ('parent__missing_field',)
|
|
|
|
self.assertEqual(Child.check(), [
|
|
Error(
|
|
"'ordering' refers to the nonexistent field, related field, "
|
|
"or lookup 'parent__missing_field'.",
|
|
obj=Child,
|
|
id='models.E015',
|
|
)
|
|
])
|
|
|
|
def test_ordering_pointing_to_non_related_field(self):
|
|
class Child(models.Model):
|
|
parent = models.IntegerField()
|
|
|
|
class Meta:
|
|
ordering = ('parent__missing_field',)
|
|
|
|
self.assertEqual(Child.check(), [
|
|
Error(
|
|
"'ordering' refers to the nonexistent field, related field, "
|
|
"or lookup 'parent__missing_field'.",
|
|
obj=Child,
|
|
id='models.E015',
|
|
)
|
|
])
|
|
|
|
def test_ordering_pointing_to_two_related_model_field(self):
|
|
class Parent2(models.Model):
|
|
pass
|
|
|
|
class Parent1(models.Model):
|
|
parent2 = models.ForeignKey(Parent2, models.CASCADE)
|
|
|
|
class Child(models.Model):
|
|
parent1 = models.ForeignKey(Parent1, models.CASCADE)
|
|
|
|
class Meta:
|
|
ordering = ('parent1__parent2__missing_field',)
|
|
|
|
self.assertEqual(Child.check(), [
|
|
Error(
|
|
"'ordering' refers to the nonexistent field, related field, "
|
|
"or lookup 'parent1__parent2__missing_field'.",
|
|
obj=Child,
|
|
id='models.E015',
|
|
)
|
|
])
|
|
|
|
def test_ordering_pointing_multiple_times_to_model_fields(self):
|
|
class Parent(models.Model):
|
|
field1 = models.CharField(max_length=100)
|
|
field2 = models.CharField(max_length=100)
|
|
|
|
class Child(models.Model):
|
|
parent = models.ForeignKey(Parent, models.CASCADE)
|
|
|
|
class Meta:
|
|
ordering = ('parent__field1__field2',)
|
|
|
|
self.assertEqual(Child.check(), [
|
|
Error(
|
|
"'ordering' refers to the nonexistent field, related field, "
|
|
"or lookup 'parent__field1__field2'.",
|
|
obj=Child,
|
|
id='models.E015',
|
|
)
|
|
])
|
|
|
|
def test_ordering_allows_registered_lookups(self):
|
|
class Model(models.Model):
|
|
test = models.CharField(max_length=100)
|
|
|
|
class Meta:
|
|
ordering = ('test__lower',)
|
|
|
|
with register_lookup(models.CharField, Lower):
|
|
self.assertEqual(Model.check(), [])
|
|
|
|
def test_ordering_pointing_to_lookup_not_transform(self):
|
|
class Model(models.Model):
|
|
test = models.CharField(max_length=100)
|
|
|
|
class Meta:
|
|
ordering = ('test__isnull',)
|
|
|
|
self.assertEqual(Model.check(), [])
|
|
|
|
def test_ordering_pointing_to_related_model_pk(self):
|
|
class Parent(models.Model):
|
|
pass
|
|
|
|
class Child(models.Model):
|
|
parent = models.ForeignKey(Parent, models.CASCADE)
|
|
|
|
class Meta:
|
|
ordering = ('parent__pk',)
|
|
|
|
self.assertEqual(Child.check(), [])
|
|
|
|
def test_ordering_pointing_to_foreignkey_field(self):
|
|
class Parent(models.Model):
|
|
pass
|
|
|
|
class Child(models.Model):
|
|
parent = models.ForeignKey(Parent, models.CASCADE)
|
|
|
|
class Meta:
|
|
ordering = ('parent_id',)
|
|
|
|
self.assertFalse(Child.check())
|
|
|
|
def test_name_beginning_with_underscore(self):
|
|
class _Model(models.Model):
|
|
pass
|
|
|
|
self.assertEqual(_Model.check(), [
|
|
Error(
|
|
"The model name '_Model' cannot start or end with an underscore "
|
|
"as it collides with the query lookup syntax.",
|
|
obj=_Model,
|
|
id='models.E023',
|
|
)
|
|
])
|
|
|
|
def test_name_ending_with_underscore(self):
|
|
class Model_(models.Model):
|
|
pass
|
|
|
|
self.assertEqual(Model_.check(), [
|
|
Error(
|
|
"The model name 'Model_' cannot start or end with an underscore "
|
|
"as it collides with the query lookup syntax.",
|
|
obj=Model_,
|
|
id='models.E023',
|
|
)
|
|
])
|
|
|
|
def test_name_contains_double_underscores(self):
|
|
class Test__Model(models.Model):
|
|
pass
|
|
|
|
self.assertEqual(Test__Model.check(), [
|
|
Error(
|
|
"The model name 'Test__Model' cannot contain double underscores "
|
|
"as it collides with the query lookup syntax.",
|
|
obj=Test__Model,
|
|
id='models.E024',
|
|
)
|
|
])
|
|
|
|
def test_property_and_related_field_accessor_clash(self):
|
|
class Model(models.Model):
|
|
fk = models.ForeignKey('self', models.CASCADE)
|
|
|
|
@property
|
|
def fk_id(self):
|
|
pass
|
|
|
|
self.assertEqual(Model.check(), [
|
|
Error(
|
|
"The property 'fk_id' clashes with a related field accessor.",
|
|
obj=Model,
|
|
id='models.E025',
|
|
)
|
|
])
|
|
|
|
def test_single_primary_key(self):
|
|
class Model(models.Model):
|
|
foo = models.IntegerField(primary_key=True)
|
|
bar = models.IntegerField(primary_key=True)
|
|
|
|
self.assertEqual(Model.check(), [
|
|
Error(
|
|
"The model cannot have more than one field with 'primary_key=True'.",
|
|
obj=Model,
|
|
id='models.E026',
|
|
)
|
|
])
|
|
|
|
@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'
|
|
|
|
self.assertEqual(Model.check(), [
|
|
Error(
|
|
"'TEST_SWAPPED_MODEL_BAD_VALUE' is not of the form 'app_label.app_name'.",
|
|
id='models.E001',
|
|
),
|
|
])
|
|
|
|
@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'
|
|
|
|
self.assertEqual(Model.check(), [
|
|
Error(
|
|
"'TEST_SWAPPED_MODEL_BAD_MODEL' references 'not_an_app.Target', "
|
|
'which has not been installed, or is abstract.',
|
|
id='models.E002',
|
|
),
|
|
])
|
|
|
|
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, models.CASCADE)
|
|
group = models.ForeignKey(Group, models.CASCADE)
|
|
|
|
self.assertEqual(Group.check(), [
|
|
Error(
|
|
"The model has two identical many-to-many relations through "
|
|
"the intermediate model 'invalid_models_tests.Membership'.",
|
|
obj=Group,
|
|
id='models.E003',
|
|
)
|
|
])
|
|
|
|
def test_two_m2m_through_same_model_with_different_through_fields(self):
|
|
class Country(models.Model):
|
|
pass
|
|
|
|
class ShippingMethod(models.Model):
|
|
to_countries = models.ManyToManyField(
|
|
Country, through='ShippingMethodPrice',
|
|
through_fields=('method', 'to_country'),
|
|
)
|
|
from_countries = models.ManyToManyField(
|
|
Country, through='ShippingMethodPrice',
|
|
through_fields=('method', 'from_country'),
|
|
related_name='+',
|
|
)
|
|
|
|
class ShippingMethodPrice(models.Model):
|
|
method = models.ForeignKey(ShippingMethod, models.CASCADE)
|
|
to_country = models.ForeignKey(Country, models.CASCADE)
|
|
from_country = models.ForeignKey(Country, models.CASCADE)
|
|
|
|
self.assertEqual(ShippingMethod.check(), [])
|
|
|
|
def test_onetoone_with_parent_model(self):
|
|
class Place(models.Model):
|
|
pass
|
|
|
|
class ParkingLot(Place):
|
|
other_place = models.OneToOneField(Place, models.CASCADE, related_name='other_parking')
|
|
|
|
self.assertEqual(ParkingLot.check(), [])
|
|
|
|
def test_onetoone_with_explicit_parent_link_parent_model(self):
|
|
class Place(models.Model):
|
|
pass
|
|
|
|
class ParkingLot(Place):
|
|
place = models.OneToOneField(Place, models.CASCADE, parent_link=True, primary_key=True)
|
|
other_place = models.OneToOneField(Place, models.CASCADE, related_name='other_parking')
|
|
|
|
self.assertEqual(ParkingLot.check(), [])
|
|
|
|
def test_m2m_table_name_clash(self):
|
|
class Foo(models.Model):
|
|
bar = models.ManyToManyField('Bar', db_table='myapp_bar')
|
|
|
|
class Meta:
|
|
db_table = 'myapp_foo'
|
|
|
|
class Bar(models.Model):
|
|
class Meta:
|
|
db_table = 'myapp_bar'
|
|
|
|
self.assertEqual(Foo.check(), [
|
|
Error(
|
|
"The field's intermediary table 'myapp_bar' clashes with the "
|
|
"table name of 'invalid_models_tests.Bar'.",
|
|
obj=Foo._meta.get_field('bar'),
|
|
id='fields.E340',
|
|
)
|
|
])
|
|
|
|
@override_settings(DATABASE_ROUTERS=['invalid_models_tests.test_models.EmptyRouter'])
|
|
def test_m2m_table_name_clash_database_routers_installed(self):
|
|
class Foo(models.Model):
|
|
bar = models.ManyToManyField('Bar', db_table='myapp_bar')
|
|
|
|
class Meta:
|
|
db_table = 'myapp_foo'
|
|
|
|
class Bar(models.Model):
|
|
class Meta:
|
|
db_table = 'myapp_bar'
|
|
|
|
self.assertEqual(Foo.check(), [
|
|
Warning(
|
|
"The field's intermediary table 'myapp_bar' clashes with the "
|
|
"table name of 'invalid_models_tests.Bar'.",
|
|
obj=Foo._meta.get_field('bar'),
|
|
hint=(
|
|
"You have configured settings.DATABASE_ROUTERS. Verify "
|
|
"that the table of 'invalid_models_tests.Bar' is "
|
|
"correctly routed to a separate database."
|
|
),
|
|
id='fields.W344',
|
|
),
|
|
])
|
|
|
|
def test_m2m_field_table_name_clash(self):
|
|
class Foo(models.Model):
|
|
pass
|
|
|
|
class Bar(models.Model):
|
|
foos = models.ManyToManyField(Foo, db_table='clash')
|
|
|
|
class Baz(models.Model):
|
|
foos = models.ManyToManyField(Foo, db_table='clash')
|
|
|
|
self.assertEqual(Bar.check() + Baz.check(), [
|
|
Error(
|
|
"The field's intermediary table 'clash' clashes with the "
|
|
"table name of 'invalid_models_tests.Baz.foos'.",
|
|
obj=Bar._meta.get_field('foos'),
|
|
id='fields.E340',
|
|
),
|
|
Error(
|
|
"The field's intermediary table 'clash' clashes with the "
|
|
"table name of 'invalid_models_tests.Bar.foos'.",
|
|
obj=Baz._meta.get_field('foos'),
|
|
id='fields.E340',
|
|
)
|
|
])
|
|
|
|
@override_settings(DATABASE_ROUTERS=['invalid_models_tests.test_models.EmptyRouter'])
|
|
def test_m2m_field_table_name_clash_database_routers_installed(self):
|
|
class Foo(models.Model):
|
|
pass
|
|
|
|
class Bar(models.Model):
|
|
foos = models.ManyToManyField(Foo, db_table='clash')
|
|
|
|
class Baz(models.Model):
|
|
foos = models.ManyToManyField(Foo, db_table='clash')
|
|
|
|
self.assertEqual(Bar.check() + Baz.check(), [
|
|
Warning(
|
|
"The field's intermediary table 'clash' clashes with the "
|
|
"table name of 'invalid_models_tests.%s.foos'."
|
|
% clashing_model,
|
|
obj=model_cls._meta.get_field('foos'),
|
|
hint=(
|
|
"You have configured settings.DATABASE_ROUTERS. Verify "
|
|
"that the table of 'invalid_models_tests.%s.foos' is "
|
|
"correctly routed to a separate database." % clashing_model
|
|
),
|
|
id='fields.W344',
|
|
) for model_cls, clashing_model in [(Bar, 'Baz'), (Baz, 'Bar')]
|
|
])
|
|
|
|
def test_m2m_autogenerated_table_name_clash(self):
|
|
class Foo(models.Model):
|
|
class Meta:
|
|
db_table = 'bar_foos'
|
|
|
|
class Bar(models.Model):
|
|
# The autogenerated `db_table` will be bar_foos.
|
|
foos = models.ManyToManyField(Foo)
|
|
|
|
class Meta:
|
|
db_table = 'bar'
|
|
|
|
self.assertEqual(Bar.check(), [
|
|
Error(
|
|
"The field's intermediary table 'bar_foos' clashes with the "
|
|
"table name of 'invalid_models_tests.Foo'.",
|
|
obj=Bar._meta.get_field('foos'),
|
|
id='fields.E340',
|
|
)
|
|
])
|
|
|
|
@override_settings(DATABASE_ROUTERS=['invalid_models_tests.test_models.EmptyRouter'])
|
|
def test_m2m_autogenerated_table_name_clash_database_routers_installed(self):
|
|
class Foo(models.Model):
|
|
class Meta:
|
|
db_table = 'bar_foos'
|
|
|
|
class Bar(models.Model):
|
|
# The autogenerated db_table is bar_foos.
|
|
foos = models.ManyToManyField(Foo)
|
|
|
|
class Meta:
|
|
db_table = 'bar'
|
|
|
|
self.assertEqual(Bar.check(), [
|
|
Warning(
|
|
"The field's intermediary table 'bar_foos' clashes with the "
|
|
"table name of 'invalid_models_tests.Foo'.",
|
|
obj=Bar._meta.get_field('foos'),
|
|
hint=(
|
|
"You have configured settings.DATABASE_ROUTERS. Verify "
|
|
"that the table of 'invalid_models_tests.Foo' is "
|
|
"correctly routed to a separate database."
|
|
),
|
|
id='fields.W344',
|
|
),
|
|
])
|
|
|
|
def test_m2m_unmanaged_shadow_models_not_checked(self):
|
|
class A1(models.Model):
|
|
pass
|
|
|
|
class C1(models.Model):
|
|
mm_a = models.ManyToManyField(A1, db_table='d1')
|
|
|
|
# Unmanaged models that shadow the above models. Reused table names
|
|
# shouldn't be flagged by any checks.
|
|
class A2(models.Model):
|
|
class Meta:
|
|
managed = False
|
|
|
|
class C2(models.Model):
|
|
mm_a = models.ManyToManyField(A2, through='Intermediate')
|
|
|
|
class Meta:
|
|
managed = False
|
|
|
|
class Intermediate(models.Model):
|
|
a2 = models.ForeignKey(A2, models.CASCADE, db_column='a1_id')
|
|
c2 = models.ForeignKey(C2, models.CASCADE, db_column='c1_id')
|
|
|
|
class Meta:
|
|
db_table = 'd1'
|
|
managed = False
|
|
|
|
self.assertEqual(C1.check(), [])
|
|
self.assertEqual(C2.check(), [])
|
|
|
|
def test_m2m_to_concrete_and_proxy_allowed(self):
|
|
class A(models.Model):
|
|
pass
|
|
|
|
class Through(models.Model):
|
|
a = models.ForeignKey('A', models.CASCADE)
|
|
c = models.ForeignKey('C', models.CASCADE)
|
|
|
|
class ThroughProxy(Through):
|
|
class Meta:
|
|
proxy = True
|
|
|
|
class C(models.Model):
|
|
mm_a = models.ManyToManyField(A, through=Through)
|
|
mm_aproxy = models.ManyToManyField(A, through=ThroughProxy, related_name='proxied_m2m')
|
|
|
|
self.assertEqual(C.check(), [])
|
|
|
|
@isolate_apps('django.contrib.auth', kwarg_name='apps')
|
|
def test_lazy_reference_checks(self, apps):
|
|
class DummyModel(models.Model):
|
|
author = models.ForeignKey('Author', models.CASCADE)
|
|
|
|
class Meta:
|
|
app_label = 'invalid_models_tests'
|
|
|
|
class DummyClass:
|
|
def __call__(self, **kwargs):
|
|
pass
|
|
|
|
def dummy_method(self):
|
|
pass
|
|
|
|
def dummy_function(*args, **kwargs):
|
|
pass
|
|
|
|
apps.lazy_model_operation(dummy_function, ('auth', 'imaginarymodel'))
|
|
apps.lazy_model_operation(dummy_function, ('fanciful_app', 'imaginarymodel'))
|
|
|
|
post_init.connect(dummy_function, sender='missing-app.Model', apps=apps)
|
|
post_init.connect(DummyClass(), sender='missing-app.Model', apps=apps)
|
|
post_init.connect(DummyClass().dummy_method, sender='missing-app.Model', apps=apps)
|
|
|
|
self.assertEqual(_check_lazy_references(apps), [
|
|
Error(
|
|
"%r contains a lazy reference to auth.imaginarymodel, "
|
|
"but app 'auth' doesn't provide model 'imaginarymodel'." % dummy_function,
|
|
obj=dummy_function,
|
|
id='models.E022',
|
|
),
|
|
Error(
|
|
"%r contains a lazy reference to fanciful_app.imaginarymodel, "
|
|
"but app 'fanciful_app' isn't installed." % dummy_function,
|
|
obj=dummy_function,
|
|
id='models.E022',
|
|
),
|
|
Error(
|
|
"An instance of class 'DummyClass' was connected to "
|
|
"the 'post_init' signal with a lazy reference to the sender "
|
|
"'missing-app.model', but app 'missing-app' isn't installed.",
|
|
hint=None,
|
|
obj='invalid_models_tests.test_models',
|
|
id='signals.E001',
|
|
),
|
|
Error(
|
|
"Bound method 'DummyClass.dummy_method' was connected to the "
|
|
"'post_init' signal with a lazy reference to the sender "
|
|
"'missing-app.model', but app 'missing-app' isn't installed.",
|
|
hint=None,
|
|
obj='invalid_models_tests.test_models',
|
|
id='signals.E001',
|
|
),
|
|
Error(
|
|
"The field invalid_models_tests.DummyModel.author was declared "
|
|
"with a lazy reference to 'invalid_models_tests.author', but app "
|
|
"'invalid_models_tests' isn't installed.",
|
|
hint=None,
|
|
obj=DummyModel.author.field,
|
|
id='fields.E307',
|
|
),
|
|
Error(
|
|
"The function 'dummy_function' was connected to the 'post_init' "
|
|
"signal with a lazy reference to the sender "
|
|
"'missing-app.model', but app 'missing-app' isn't installed.",
|
|
hint=None,
|
|
obj='invalid_models_tests.test_models',
|
|
id='signals.E001',
|
|
),
|
|
])
|
|
|
|
|
|
@isolate_apps('invalid_models_tests')
|
|
class JSONFieldTests(TestCase):
|
|
@skipUnlessDBFeature('supports_json_field')
|
|
def test_ordering_pointing_to_json_field_value(self):
|
|
class Model(models.Model):
|
|
field = models.JSONField()
|
|
|
|
class Meta:
|
|
ordering = ['field__value']
|
|
|
|
self.assertEqual(Model.check(databases=self.databases), [])
|
|
|
|
def test_check_jsonfield(self):
|
|
class Model(models.Model):
|
|
field = models.JSONField()
|
|
|
|
error = Error(
|
|
'%s does not support JSONFields.' % connection.display_name,
|
|
obj=Model,
|
|
id='fields.E180',
|
|
)
|
|
expected = [] if connection.features.supports_json_field else [error]
|
|
self.assertEqual(Model.check(databases=self.databases), expected)
|
|
|
|
def test_check_jsonfield_required_db_features(self):
|
|
class Model(models.Model):
|
|
field = models.JSONField()
|
|
|
|
class Meta:
|
|
required_db_features = {'supports_json_field'}
|
|
|
|
self.assertEqual(Model.check(databases=self.databases), [])
|
|
|
|
|
|
@isolate_apps('invalid_models_tests')
|
|
class ConstraintsTests(TestCase):
|
|
def test_check_constraints(self):
|
|
class Model(models.Model):
|
|
age = models.IntegerField()
|
|
|
|
class Meta:
|
|
constraints = [models.CheckConstraint(check=models.Q(age__gte=18), name='is_adult')]
|
|
|
|
errors = Model.check(databases=self.databases)
|
|
warn = Warning(
|
|
'%s does not support check constraints.' % connection.display_name,
|
|
hint=(
|
|
"A constraint won't be created. Silence this warning if you "
|
|
"don't care about it."
|
|
),
|
|
obj=Model,
|
|
id='models.W027',
|
|
)
|
|
expected = [] if connection.features.supports_table_check_constraints else [warn]
|
|
self.assertCountEqual(errors, expected)
|
|
|
|
def test_check_constraints_required_db_features(self):
|
|
class Model(models.Model):
|
|
age = models.IntegerField()
|
|
|
|
class Meta:
|
|
required_db_features = {'supports_table_check_constraints'}
|
|
constraints = [models.CheckConstraint(check=models.Q(age__gte=18), name='is_adult')]
|
|
self.assertEqual(Model.check(databases=self.databases), [])
|
|
|
|
def test_unique_constraint_with_condition(self):
|
|
class Model(models.Model):
|
|
age = models.IntegerField()
|
|
|
|
class Meta:
|
|
constraints = [
|
|
models.UniqueConstraint(
|
|
fields=['age'],
|
|
name='unique_age_gte_100',
|
|
condition=models.Q(age__gte=100),
|
|
),
|
|
]
|
|
|
|
errors = Model.check(databases=self.databases)
|
|
expected = [] if connection.features.supports_partial_indexes else [
|
|
Warning(
|
|
'%s does not support unique constraints with conditions.'
|
|
% connection.display_name,
|
|
hint=(
|
|
"A constraint won't be created. Silence this warning if "
|
|
"you don't care about it."
|
|
),
|
|
obj=Model,
|
|
id='models.W036',
|
|
),
|
|
]
|
|
self.assertEqual(errors, expected)
|
|
|
|
def test_unique_constraint_with_condition_required_db_features(self):
|
|
class Model(models.Model):
|
|
age = models.IntegerField()
|
|
|
|
class Meta:
|
|
required_db_features = {'supports_partial_indexes'}
|
|
constraints = [
|
|
models.UniqueConstraint(
|
|
fields=['age'],
|
|
name='unique_age_gte_100',
|
|
condition=models.Q(age__gte=100),
|
|
),
|
|
]
|
|
|
|
self.assertEqual(Model.check(databases=self.databases), [])
|
|
|
|
def test_deferrable_unique_constraint(self):
|
|
class Model(models.Model):
|
|
age = models.IntegerField()
|
|
|
|
class Meta:
|
|
constraints = [
|
|
models.UniqueConstraint(
|
|
fields=['age'],
|
|
name='unique_age_deferrable',
|
|
deferrable=models.Deferrable.DEFERRED,
|
|
),
|
|
]
|
|
|
|
errors = Model.check(databases=self.databases)
|
|
expected = [] if connection.features.supports_deferrable_unique_constraints else [
|
|
Warning(
|
|
'%s does not support deferrable unique constraints.'
|
|
% connection.display_name,
|
|
hint=(
|
|
"A constraint won't be created. Silence this warning if "
|
|
"you don't care about it."
|
|
),
|
|
obj=Model,
|
|
id='models.W038',
|
|
),
|
|
]
|
|
self.assertEqual(errors, expected)
|
|
|
|
def test_deferrable_unique_constraint_required_db_features(self):
|
|
class Model(models.Model):
|
|
age = models.IntegerField()
|
|
|
|
class Meta:
|
|
required_db_features = {'supports_deferrable_unique_constraints'}
|
|
constraints = [
|
|
models.UniqueConstraint(
|
|
fields=['age'],
|
|
name='unique_age_deferrable',
|
|
deferrable=models.Deferrable.IMMEDIATE,
|
|
),
|
|
]
|
|
|
|
self.assertEqual(Model.check(databases=self.databases), [])
|
|
|
|
def test_unique_constraint_pointing_to_missing_field(self):
|
|
class Model(models.Model):
|
|
class Meta:
|
|
constraints = [models.UniqueConstraint(fields=['missing_field'], name='name')]
|
|
|
|
self.assertEqual(Model.check(databases=self.databases), [
|
|
Error(
|
|
"'constraints' refers to the nonexistent field "
|
|
"'missing_field'.",
|
|
obj=Model,
|
|
id='models.E012',
|
|
),
|
|
])
|
|
|
|
def test_unique_constraint_pointing_to_m2m_field(self):
|
|
class Model(models.Model):
|
|
m2m = models.ManyToManyField('self')
|
|
|
|
class Meta:
|
|
constraints = [models.UniqueConstraint(fields=['m2m'], name='name')]
|
|
|
|
self.assertEqual(Model.check(databases=self.databases), [
|
|
Error(
|
|
"'constraints' refers to a ManyToManyField 'm2m', but "
|
|
"ManyToManyFields are not permitted in 'constraints'.",
|
|
obj=Model,
|
|
id='models.E013',
|
|
),
|
|
])
|
|
|
|
def test_unique_constraint_pointing_to_non_local_field(self):
|
|
class Parent(models.Model):
|
|
field1 = models.IntegerField()
|
|
|
|
class Child(Parent):
|
|
field2 = models.IntegerField()
|
|
|
|
class Meta:
|
|
constraints = [
|
|
models.UniqueConstraint(fields=['field2', 'field1'], name='name'),
|
|
]
|
|
|
|
self.assertEqual(Child.check(databases=self.databases), [
|
|
Error(
|
|
"'constraints' refers to field 'field1' which is not local to "
|
|
"model 'Child'.",
|
|
hint='This issue may be caused by multi-table inheritance.',
|
|
obj=Child,
|
|
id='models.E016',
|
|
),
|
|
])
|
|
|
|
def test_unique_constraint_pointing_to_fk(self):
|
|
class Target(models.Model):
|
|
pass
|
|
|
|
class Model(models.Model):
|
|
fk_1 = models.ForeignKey(Target, models.CASCADE, related_name='target_1')
|
|
fk_2 = models.ForeignKey(Target, models.CASCADE, related_name='target_2')
|
|
|
|
class Meta:
|
|
constraints = [
|
|
models.UniqueConstraint(fields=['fk_1_id', 'fk_2'], name='name'),
|
|
]
|
|
|
|
self.assertEqual(Model.check(databases=self.databases), [])
|