mirror of
https://github.com/django/django.git
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2818 lines
92 KiB
Python
2818 lines
92 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 Abs, Lower, Round
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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 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(
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Model.check(),
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[
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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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)
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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(
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Model.check(),
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[
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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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)
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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(
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Model.check(),
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[
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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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)
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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(
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Model.check(),
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[
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Error(
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"'unique_together' refers to the nonexistent field "
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"'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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)
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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(
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Model.check(),
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[
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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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)
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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(
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Foo, on_delete=models.CASCADE, related_name="bar_1"
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)
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foo_2 = models.ForeignKey(
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Foo, on_delete=models.CASCADE, related_name="bar_2"
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)
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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(
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Model.check(),
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[
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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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)
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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(
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Model.check(),
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[
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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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)
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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(
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Bar.check(),
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[
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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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)
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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(
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Foo, on_delete=models.CASCADE, related_name="bar_1"
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)
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foo_2 = models.ForeignKey(
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Foo, on_delete=models.CASCADE, related_name="bar_2"
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)
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class Meta:
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indexes = [
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models.Index(fields=["foo_1_id", "foo_2"], name="index_name")
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]
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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(
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Model.check(),
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[
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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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)
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for prefix in ("_", "5")
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],
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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(
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Model.check(),
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[
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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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)
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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 = (
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[]
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if connection.features.supports_partial_indexes
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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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)
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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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def test_index_with_include(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_include_id",
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include=["id"],
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),
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]
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errors = Model.check(databases=self.databases)
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expected = (
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[]
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if connection.features.supports_covering_indexes
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else [
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Warning(
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"%s does not support indexes with non-key columns."
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% connection.display_name,
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hint=(
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"Non-key columns will be ignored. Silence this warning if "
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"you don't care about it."
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),
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obj=Model,
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id="models.W040",
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)
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]
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)
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self.assertEqual(errors, expected)
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def test_index_with_include_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_covering_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_include_id",
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include=["id"],
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),
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]
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self.assertEqual(Model.check(databases=self.databases), [])
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@skipUnlessDBFeature("supports_covering_indexes")
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def test_index_include_pointing_to_missing_field(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"], include=["missing_field"], name="name"),
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]
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self.assertEqual(
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Model.check(databases=self.databases),
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[
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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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)
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@skipUnlessDBFeature("supports_covering_indexes")
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def test_index_include_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=["id"], include=["m2m"], name="name")]
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self.assertEqual(
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Model.check(databases=self.databases),
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[
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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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)
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@skipUnlessDBFeature("supports_covering_indexes")
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def test_index_include_pointing_to_non_local_field(self):
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class Parent(models.Model):
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field1 = models.IntegerField()
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class Child(Parent):
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field2 = models.IntegerField()
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class Meta:
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indexes = [
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models.Index(fields=["field2"], include=["field1"], name="name"),
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]
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self.assertEqual(
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Child.check(databases=self.databases),
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[
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Error(
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"'indexes' refers to field 'field1' which is not local to "
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"model 'Child'.",
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hint="This issue may be caused by multi-table inheritance.",
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obj=Child,
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id="models.E016",
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),
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],
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)
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@skipUnlessDBFeature("supports_covering_indexes")
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def test_index_include_pointing_to_fk(self):
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class Target(models.Model):
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pass
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class Model(models.Model):
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fk_1 = models.ForeignKey(Target, models.CASCADE, related_name="target_1")
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fk_2 = models.ForeignKey(Target, models.CASCADE, related_name="target_2")
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class Meta:
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indexes = [
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models.Index(
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fields=["id"],
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include=["fk_1_id", "fk_2"],
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name="name",
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),
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]
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self.assertEqual(Model.check(databases=self.databases), [])
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def test_func_index(self):
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class Model(models.Model):
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name = models.CharField(max_length=10)
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class Meta:
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indexes = [models.Index(Lower("name"), name="index_lower_name")]
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warn = Warning(
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"%s does not support indexes on expressions." % connection.display_name,
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hint=(
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"An index won't be created. Silence this warning if you don't "
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"care about it."
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),
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obj=Model,
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id="models.W043",
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)
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expected = [] if connection.features.supports_expression_indexes else [warn]
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self.assertEqual(Model.check(databases=self.databases), expected)
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def test_func_index_required_db_features(self):
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class Model(models.Model):
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name = models.CharField(max_length=10)
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class Meta:
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indexes = [models.Index(Lower("name"), name="index_lower_name")]
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required_db_features = {"supports_expression_indexes"}
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self.assertEqual(Model.check(databases=self.databases), [])
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def test_func_index_complex_expression_custom_lookup(self):
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class Model(models.Model):
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height = models.IntegerField()
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weight = models.IntegerField()
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class Meta:
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indexes = [
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models.Index(
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models.F("height")
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/ (models.F("weight__abs") + models.Value(5)),
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name="name",
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),
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]
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with register_lookup(models.IntegerField, Abs):
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self.assertEqual(Model.check(), [])
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|
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def test_func_index_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(Lower("missing_field").desc(), name="name")]
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|
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self.assertEqual(
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Model.check(),
|
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[
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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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)
|
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|
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def test_func_index_pointing_to_missing_field_nested(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(Abs(Round("missing_field")), name="name"),
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]
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|
|
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self.assertEqual(
|
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Model.check(),
|
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[
|
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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_func_index_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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|
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class Meta:
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indexes = [models.Index(Lower("m2m"), name="name")]
|
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|
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self.assertEqual(
|
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Model.check(),
|
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[
|
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Error(
|
|
"'indexes' refers to a ManyToManyField 'm2m', but "
|
|
"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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)
|
|
|
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def test_func_index_pointing_to_non_local_field(self):
|
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class Foo(models.Model):
|
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field1 = models.CharField(max_length=15)
|
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|
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class Bar(Foo):
|
|
class Meta:
|
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indexes = [models.Index(Lower("field1"), name="name")]
|
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|
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self.assertEqual(
|
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Bar.check(),
|
|
[
|
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Error(
|
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"'indexes' refers to field 'field1' which is not local to "
|
|
"model 'Bar'.",
|
|
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_func_index_pointing_to_fk(self):
|
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class Foo(models.Model):
|
|
pass
|
|
|
|
class Bar(models.Model):
|
|
foo_1 = models.ForeignKey(Foo, models.CASCADE, related_name="bar_1")
|
|
foo_2 = models.ForeignKey(Foo, models.CASCADE, related_name="bar_2")
|
|
|
|
class Meta:
|
|
indexes = [
|
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models.Index(Lower("foo_1_id"), Lower("foo_2"), name="index_name"),
|
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]
|
|
|
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self.assertEqual(Bar.check(), [])
|
|
|
|
|
|
@isolate_apps("invalid_models_tests")
|
|
class FieldNamesTests(TestCase):
|
|
databases = {"default", "other"}
|
|
|
|
def test_ending_with_underscore(self):
|
|
class Model(models.Model):
|
|
field_ = models.CharField(max_length=10)
|
|
m2m_ = models.ManyToManyField("self")
|
|
|
|
self.assertEqual(
|
|
Model.check(),
|
|
[
|
|
Error(
|
|
"Field names must not end with an underscore.",
|
|
obj=Model._meta.get_field("field_"),
|
|
id="fields.E001",
|
|
),
|
|
Error(
|
|
"Field names must not end with an underscore.",
|
|
obj=Model._meta.get_field("m2m_"),
|
|
id="fields.E001",
|
|
),
|
|
],
|
|
)
|
|
|
|
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.
|
|
"""
|
|
|
|
# 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,
|
|
models.CASCADE,
|
|
related_name="rn4",
|
|
)
|
|
|
|
# Models used for setting `through` in M2M field.
|
|
class m2msimple(models.Model):
|
|
id2 = models.ForeignKey(ModelWithLongField, models.CASCADE)
|
|
|
|
class m2mcomplex(models.Model):
|
|
id2 = models.ForeignKey(ModelWithLongField, models.CASCADE)
|
|
|
|
long_field_name = "a" * (self.max_column_name_length + 1)
|
|
models.ForeignKey(
|
|
VeryLongModelNamezzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz,
|
|
models.CASCADE,
|
|
).contribute_to_class(m2msimple, long_field_name)
|
|
|
|
models.ForeignKey(
|
|
VeryLongModelNamezzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz,
|
|
models.CASCADE,
|
|
db_column=long_field_name,
|
|
).contribute_to_class(m2mcomplex, long_field_name)
|
|
|
|
errors = ModelWithLongField.check(databases=("default", "other"))
|
|
|
|
# First error because of M2M field set on the model with long name.
|
|
m2m_long_name = (
|
|
"verylongmodelnamezzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz_id"
|
|
)
|
|
if self.max_column_name_length > len(m2m_long_name):
|
|
# Some databases support names longer than the test name.
|
|
expected = []
|
|
else:
|
|
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-generated 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)
|
|
# Check for long column names is called only for specified database
|
|
# aliases.
|
|
self.assertEqual(ModelWithLongField.check(databases=None), [])
|
|
|
|
@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.
|
|
"""
|
|
|
|
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
|
|
)
|
|
self.assertEqual(
|
|
ModelWithLongField.check(databases=("default", "other")),
|
|
[
|
|
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",
|
|
)
|
|
],
|
|
)
|
|
# Check for long column names is called only for specified database
|
|
# aliases.
|
|
self.assertEqual(ModelWithLongField.check(databases=None), [])
|
|
|
|
def test_including_separator(self):
|
|
class Model(models.Model):
|
|
some__field = models.IntegerField()
|
|
|
|
self.assertEqual(
|
|
Model.check(),
|
|
[
|
|
Error(
|
|
'Field names must not contain "__".',
|
|
obj=Model._meta.get_field("some__field"),
|
|
id="fields.E002",
|
|
)
|
|
],
|
|
)
|
|
|
|
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_field_name_clash_with_m2m_through(self):
|
|
class Parent(models.Model):
|
|
clash_id = models.IntegerField()
|
|
|
|
class Child(Parent):
|
|
clash = models.ForeignKey("Child", models.CASCADE)
|
|
|
|
class Model(models.Model):
|
|
parents = models.ManyToManyField(
|
|
to=Parent,
|
|
through="Through",
|
|
through_fields=["parent", "model"],
|
|
)
|
|
|
|
class Through(models.Model):
|
|
parent = models.ForeignKey(Parent, models.CASCADE)
|
|
model = models.ForeignKey(Model, models.CASCADE)
|
|
|
|
self.assertEqual(
|
|
Child.check(),
|
|
[
|
|
Error(
|
|
"The field 'clash' clashes with the field 'clash_id' from "
|
|
"model 'invalid_models_tests.parent'.",
|
|
obj=Child._meta.get_field("clash"),
|
|
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_diamond_mti_common_parent(self):
|
|
class GrandParent(models.Model):
|
|
pass
|
|
|
|
class Parent(GrandParent):
|
|
pass
|
|
|
|
class Child(Parent):
|
|
pass
|
|
|
|
class MTICommonParentModel(Child, GrandParent):
|
|
pass
|
|
|
|
self.assertEqual(
|
|
MTICommonParentModel.check(),
|
|
[
|
|
Error(
|
|
"The field 'grandparent_ptr' clashes with the field "
|
|
"'grandparent_ptr' from model 'invalid_models_tests.parent'.",
|
|
obj=MTICommonParentModel,
|
|
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)
|
|
|
|
# Override related field accessor.
|
|
Model.fk_id = property(lambda self: "ERROR")
|
|
|
|
self.assertEqual(
|
|
Model.check(),
|
|
[
|
|
Error(
|
|
"The property 'fk_id' clashes with a related field accessor.",
|
|
obj=Model,
|
|
id="models.E025",
|
|
)
|
|
],
|
|
)
|
|
|
|
def test_inherited_overriden_property_no_clash(self):
|
|
class Cheese:
|
|
@property
|
|
def filling_id(self):
|
|
pass
|
|
|
|
class Sandwich(Cheese, models.Model):
|
|
filling = models.ForeignKey("self", models.CASCADE)
|
|
|
|
self.assertEqual(Sandwich.check(), [])
|
|
|
|
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 DbTableCommentTests(TestCase):
|
|
def test_db_table_comment(self):
|
|
class Model(models.Model):
|
|
class Meta:
|
|
db_table_comment = "Table comment"
|
|
|
|
errors = Model.check(databases=self.databases)
|
|
expected = (
|
|
[]
|
|
if connection.features.supports_comments
|
|
else [
|
|
Warning(
|
|
f"{connection.display_name} does not support comments on tables "
|
|
f"(db_table_comment).",
|
|
obj=Model,
|
|
id="models.W046",
|
|
),
|
|
]
|
|
)
|
|
self.assertEqual(errors, expected)
|
|
|
|
def test_db_table_comment_required_db_features(self):
|
|
class Model(models.Model):
|
|
class Meta:
|
|
db_table_comment = "Table comment"
|
|
required_db_features = {"supports_comments"}
|
|
|
|
self.assertEqual(Model.check(databases=self.databases), [])
|
|
|
|
|
|
class MultipleAutoFieldsTests(TestCase):
|
|
def test_multiple_autofields(self):
|
|
msg = (
|
|
"Model invalid_models_tests.MultipleAutoFields can't have more "
|
|
"than one auto-generated field."
|
|
)
|
|
with self.assertRaisesMessage(ValueError, msg):
|
|
|
|
class MultipleAutoFields(models.Model):
|
|
auto1 = models.AutoField(primary_key=True)
|
|
auto2 = models.AutoField(primary_key=True)
|
|
|
|
|
|
@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(
|
|
condition=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(
|
|
condition=models.Q(age__gte=18), name="is_adult"
|
|
)
|
|
]
|
|
|
|
self.assertEqual(Model.check(databases=self.databases), [])
|
|
|
|
def test_check_constraint_pointing_to_missing_field(self):
|
|
class Model(models.Model):
|
|
class Meta:
|
|
required_db_features = {"supports_table_check_constraints"}
|
|
constraints = [
|
|
models.CheckConstraint(
|
|
name="name",
|
|
condition=models.Q(missing_field=2),
|
|
),
|
|
]
|
|
|
|
self.assertEqual(
|
|
Model.check(databases=self.databases),
|
|
(
|
|
[
|
|
Error(
|
|
"'constraints' refers to the nonexistent field "
|
|
"'missing_field'.",
|
|
obj=Model,
|
|
id="models.E012",
|
|
),
|
|
]
|
|
if connection.features.supports_table_check_constraints
|
|
else []
|
|
),
|
|
)
|
|
|
|
@skipUnlessDBFeature("supports_table_check_constraints")
|
|
def test_check_constraint_pointing_to_reverse_fk(self):
|
|
class Model(models.Model):
|
|
parent = models.ForeignKey("self", models.CASCADE, related_name="parents")
|
|
|
|
class Meta:
|
|
constraints = [
|
|
models.CheckConstraint(name="name", condition=models.Q(parents=3)),
|
|
]
|
|
|
|
self.assertEqual(
|
|
Model.check(databases=self.databases),
|
|
[
|
|
Error(
|
|
"'constraints' refers to the nonexistent field 'parents'.",
|
|
obj=Model,
|
|
id="models.E012",
|
|
),
|
|
],
|
|
)
|
|
|
|
@skipUnlessDBFeature("supports_table_check_constraints")
|
|
def test_check_constraint_pointing_to_reverse_o2o(self):
|
|
class Model(models.Model):
|
|
parent = models.OneToOneField("self", models.CASCADE)
|
|
|
|
class Meta:
|
|
constraints = [
|
|
models.CheckConstraint(
|
|
name="name",
|
|
condition=models.Q(model__isnull=True),
|
|
),
|
|
]
|
|
|
|
self.assertEqual(
|
|
Model.check(databases=self.databases),
|
|
[
|
|
Error(
|
|
"'constraints' refers to the nonexistent field 'model'.",
|
|
obj=Model,
|
|
id="models.E012",
|
|
),
|
|
],
|
|
)
|
|
|
|
@skipUnlessDBFeature("supports_table_check_constraints")
|
|
def test_check_constraint_pointing_to_m2m_field(self):
|
|
class Model(models.Model):
|
|
m2m = models.ManyToManyField("self")
|
|
|
|
class Meta:
|
|
constraints = [
|
|
models.CheckConstraint(name="name", condition=models.Q(m2m=2)),
|
|
]
|
|
|
|
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",
|
|
),
|
|
],
|
|
)
|
|
|
|
@skipUnlessDBFeature("supports_table_check_constraints")
|
|
def test_check_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.CheckConstraint(
|
|
name="name",
|
|
condition=models.Q(fk_1_id=2) | models.Q(fk_2=2),
|
|
),
|
|
]
|
|
|
|
self.assertEqual(Model.check(databases=self.databases), [])
|
|
|
|
@skipUnlessDBFeature("supports_table_check_constraints")
|
|
def test_check_constraint_pointing_to_pk(self):
|
|
class Model(models.Model):
|
|
age = models.SmallIntegerField()
|
|
|
|
class Meta:
|
|
constraints = [
|
|
models.CheckConstraint(
|
|
name="name",
|
|
condition=models.Q(pk__gt=5) & models.Q(age__gt=models.F("pk")),
|
|
),
|
|
]
|
|
|
|
self.assertEqual(Model.check(databases=self.databases), [])
|
|
|
|
@skipUnlessDBFeature("supports_table_check_constraints")
|
|
def test_check_constraint_pointing_to_non_local_field(self):
|
|
class Parent(models.Model):
|
|
field1 = models.IntegerField()
|
|
|
|
class Child(Parent):
|
|
pass
|
|
|
|
class Meta:
|
|
constraints = [
|
|
models.CheckConstraint(name="name", condition=models.Q(field1=1)),
|
|
]
|
|
|
|
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",
|
|
),
|
|
],
|
|
)
|
|
|
|
@skipUnlessDBFeature("supports_table_check_constraints")
|
|
def test_check_constraint_pointing_to_joined_fields(self):
|
|
class Model(models.Model):
|
|
name = models.CharField(max_length=10)
|
|
field1 = models.PositiveSmallIntegerField()
|
|
field2 = models.PositiveSmallIntegerField()
|
|
field3 = models.PositiveSmallIntegerField()
|
|
parent = models.ForeignKey("self", models.CASCADE)
|
|
previous = models.OneToOneField("self", models.CASCADE, related_name="next")
|
|
|
|
class Meta:
|
|
constraints = [
|
|
models.CheckConstraint(
|
|
name="name1",
|
|
condition=models.Q(
|
|
field1__lt=models.F("parent__field1")
|
|
+ models.F("parent__field2")
|
|
),
|
|
),
|
|
models.CheckConstraint(
|
|
name="name2", condition=models.Q(name=Lower("parent__name"))
|
|
),
|
|
models.CheckConstraint(
|
|
name="name3",
|
|
condition=models.Q(parent__field3=models.F("field1")),
|
|
),
|
|
models.CheckConstraint(
|
|
name="name4",
|
|
condition=models.Q(name=Lower("previous__name")),
|
|
),
|
|
]
|
|
|
|
joined_fields = [
|
|
"parent__field1",
|
|
"parent__field2",
|
|
"parent__field3",
|
|
"parent__name",
|
|
"previous__name",
|
|
]
|
|
errors = Model.check(databases=self.databases)
|
|
expected_errors = [
|
|
Error(
|
|
"'constraints' refers to the joined field '%s'." % field_name,
|
|
obj=Model,
|
|
id="models.E041",
|
|
)
|
|
for field_name in joined_fields
|
|
]
|
|
self.assertCountEqual(errors, expected_errors)
|
|
|
|
@skipUnlessDBFeature("supports_table_check_constraints")
|
|
def test_check_constraint_pointing_to_joined_fields_complex_check(self):
|
|
class Model(models.Model):
|
|
name = models.PositiveSmallIntegerField()
|
|
field1 = models.PositiveSmallIntegerField()
|
|
field2 = models.PositiveSmallIntegerField()
|
|
parent = models.ForeignKey("self", models.CASCADE)
|
|
|
|
class Meta:
|
|
constraints = [
|
|
models.CheckConstraint(
|
|
name="name",
|
|
condition=models.Q(
|
|
(
|
|
models.Q(name="test")
|
|
& models.Q(field1__lt=models.F("parent__field1"))
|
|
)
|
|
| (
|
|
models.Q(name__startswith=Lower("parent__name"))
|
|
& models.Q(
|
|
field1__gte=(
|
|
models.F("parent__field1")
|
|
+ models.F("parent__field2")
|
|
)
|
|
)
|
|
)
|
|
)
|
|
| (models.Q(name="test1")),
|
|
),
|
|
]
|
|
|
|
joined_fields = ["parent__field1", "parent__field2", "parent__name"]
|
|
errors = Model.check(databases=self.databases)
|
|
expected_errors = [
|
|
Error(
|
|
"'constraints' refers to the joined field '%s'." % field_name,
|
|
obj=Model,
|
|
id="models.E041",
|
|
)
|
|
for field_name in joined_fields
|
|
]
|
|
self.assertCountEqual(errors, expected_errors)
|
|
|
|
def test_check_constraint_raw_sql_check(self):
|
|
class Model(models.Model):
|
|
class Meta:
|
|
required_db_features = {"supports_table_check_constraints"}
|
|
constraints = [
|
|
models.CheckConstraint(
|
|
condition=models.Q(id__gt=0), name="q_check"
|
|
),
|
|
models.CheckConstraint(
|
|
condition=models.ExpressionWrapper(
|
|
models.Q(price__gt=20),
|
|
output_field=models.BooleanField(),
|
|
),
|
|
name="expression_wrapper_check",
|
|
),
|
|
models.CheckConstraint(
|
|
condition=models.expressions.RawSQL(
|
|
"id = 0",
|
|
params=(),
|
|
output_field=models.BooleanField(),
|
|
),
|
|
name="raw_sql_check",
|
|
),
|
|
models.CheckConstraint(
|
|
condition=models.Q(
|
|
models.ExpressionWrapper(
|
|
models.Q(
|
|
models.expressions.RawSQL(
|
|
"id = 0",
|
|
params=(),
|
|
output_field=models.BooleanField(),
|
|
)
|
|
),
|
|
output_field=models.BooleanField(),
|
|
)
|
|
),
|
|
name="nested_raw_sql_check",
|
|
),
|
|
]
|
|
|
|
expected_warnings = (
|
|
[
|
|
Warning(
|
|
"Check constraint 'raw_sql_check' contains RawSQL() expression and "
|
|
"won't be validated during the model full_clean().",
|
|
hint="Silence this warning if you don't care about it.",
|
|
obj=Model,
|
|
id="models.W045",
|
|
),
|
|
Warning(
|
|
"Check constraint 'nested_raw_sql_check' contains RawSQL() "
|
|
"expression and won't be validated during the model full_clean().",
|
|
hint="Silence this warning if you don't care about it.",
|
|
obj=Model,
|
|
id="models.W045",
|
|
),
|
|
]
|
|
if connection.features.supports_table_check_constraints
|
|
else []
|
|
)
|
|
self.assertEqual(Model.check(databases=self.databases), expected_warnings)
|
|
|
|
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_unique_constraint_condition_pointing_to_missing_field(self):
|
|
class Model(models.Model):
|
|
age = models.SmallIntegerField()
|
|
|
|
class Meta:
|
|
required_db_features = {"supports_partial_indexes"}
|
|
constraints = [
|
|
models.UniqueConstraint(
|
|
name="name",
|
|
fields=["age"],
|
|
condition=models.Q(missing_field=2),
|
|
),
|
|
]
|
|
|
|
self.assertEqual(
|
|
Model.check(databases=self.databases),
|
|
(
|
|
[
|
|
Error(
|
|
"'constraints' refers to the nonexistent field "
|
|
"'missing_field'.",
|
|
obj=Model,
|
|
id="models.E012",
|
|
),
|
|
]
|
|
if connection.features.supports_partial_indexes
|
|
else []
|
|
),
|
|
)
|
|
|
|
def test_unique_constraint_condition_pointing_to_joined_fields(self):
|
|
class Model(models.Model):
|
|
age = models.SmallIntegerField()
|
|
parent = models.ForeignKey("self", models.CASCADE)
|
|
|
|
class Meta:
|
|
required_db_features = {"supports_partial_indexes"}
|
|
constraints = [
|
|
models.UniqueConstraint(
|
|
name="name",
|
|
fields=["age"],
|
|
condition=models.Q(parent__age__lt=2),
|
|
),
|
|
]
|
|
|
|
self.assertEqual(
|
|
Model.check(databases=self.databases),
|
|
(
|
|
[
|
|
Error(
|
|
"'constraints' refers to the joined field 'parent__age__lt'.",
|
|
obj=Model,
|
|
id="models.E041",
|
|
)
|
|
]
|
|
if connection.features.supports_partial_indexes
|
|
else []
|
|
),
|
|
)
|
|
|
|
def test_unique_constraint_pointing_to_reverse_o2o(self):
|
|
class Model(models.Model):
|
|
parent = models.OneToOneField("self", models.CASCADE)
|
|
|
|
class Meta:
|
|
required_db_features = {"supports_partial_indexes"}
|
|
constraints = [
|
|
models.UniqueConstraint(
|
|
fields=["parent"],
|
|
name="name",
|
|
condition=models.Q(model__isnull=True),
|
|
),
|
|
]
|
|
|
|
self.assertEqual(
|
|
Model.check(databases=self.databases),
|
|
(
|
|
[
|
|
Error(
|
|
"'constraints' refers to the nonexistent field 'model'.",
|
|
obj=Model,
|
|
id="models.E012",
|
|
),
|
|
]
|
|
if connection.features.supports_partial_indexes
|
|
else []
|
|
),
|
|
)
|
|
|
|
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), [])
|
|
|
|
def test_unique_constraint_with_include(self):
|
|
class Model(models.Model):
|
|
age = models.IntegerField()
|
|
|
|
class Meta:
|
|
constraints = [
|
|
models.UniqueConstraint(
|
|
fields=["age"],
|
|
name="unique_age_include_id",
|
|
include=["id"],
|
|
),
|
|
]
|
|
|
|
errors = Model.check(databases=self.databases)
|
|
expected = (
|
|
[]
|
|
if connection.features.supports_covering_indexes
|
|
else [
|
|
Warning(
|
|
"%s does not support unique constraints with non-key columns."
|
|
% connection.display_name,
|
|
hint=(
|
|
"A constraint won't be created. Silence this warning if "
|
|
"you don't care about it."
|
|
),
|
|
obj=Model,
|
|
id="models.W039",
|
|
),
|
|
]
|
|
)
|
|
self.assertEqual(errors, expected)
|
|
|
|
def test_unique_constraint_with_include_required_db_features(self):
|
|
class Model(models.Model):
|
|
age = models.IntegerField()
|
|
|
|
class Meta:
|
|
required_db_features = {"supports_covering_indexes"}
|
|
constraints = [
|
|
models.UniqueConstraint(
|
|
fields=["age"],
|
|
name="unique_age_include_id",
|
|
include=["id"],
|
|
),
|
|
]
|
|
|
|
self.assertEqual(Model.check(databases=self.databases), [])
|
|
|
|
@skipUnlessDBFeature("supports_covering_indexes")
|
|
def test_unique_constraint_include_pointing_to_missing_field(self):
|
|
class Model(models.Model):
|
|
class Meta:
|
|
constraints = [
|
|
models.UniqueConstraint(
|
|
fields=["id"],
|
|
include=["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",
|
|
),
|
|
],
|
|
)
|
|
|
|
@skipUnlessDBFeature("supports_covering_indexes")
|
|
def test_unique_constraint_include_pointing_to_m2m_field(self):
|
|
class Model(models.Model):
|
|
m2m = models.ManyToManyField("self")
|
|
|
|
class Meta:
|
|
constraints = [
|
|
models.UniqueConstraint(
|
|
fields=["id"],
|
|
include=["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",
|
|
),
|
|
],
|
|
)
|
|
|
|
@skipUnlessDBFeature("supports_covering_indexes")
|
|
def test_unique_constraint_include_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"],
|
|
include=["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",
|
|
),
|
|
],
|
|
)
|
|
|
|
@skipUnlessDBFeature("supports_covering_indexes")
|
|
def test_unique_constraint_include_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=["id"],
|
|
include=["fk_1_id", "fk_2"],
|
|
name="name",
|
|
),
|
|
]
|
|
|
|
self.assertEqual(Model.check(databases=self.databases), [])
|
|
|
|
def test_func_unique_constraint(self):
|
|
class Model(models.Model):
|
|
name = models.CharField(max_length=10)
|
|
|
|
class Meta:
|
|
constraints = [
|
|
models.UniqueConstraint(Lower("name"), name="lower_name_uq"),
|
|
]
|
|
|
|
warn = Warning(
|
|
"%s does not support unique constraints on expressions."
|
|
% connection.display_name,
|
|
hint=(
|
|
"A constraint won't be created. Silence this warning if you "
|
|
"don't care about it."
|
|
),
|
|
obj=Model,
|
|
id="models.W044",
|
|
)
|
|
expected = [] if connection.features.supports_expression_indexes else [warn]
|
|
self.assertEqual(Model.check(databases=self.databases), expected)
|
|
|
|
def test_func_unique_constraint_required_db_features(self):
|
|
class Model(models.Model):
|
|
name = models.CharField(max_length=10)
|
|
|
|
class Meta:
|
|
constraints = [
|
|
models.UniqueConstraint(Lower("name"), name="lower_name_unq"),
|
|
]
|
|
required_db_features = {"supports_expression_indexes"}
|
|
|
|
self.assertEqual(Model.check(databases=self.databases), [])
|
|
|
|
def test_unique_constraint_nulls_distinct(self):
|
|
class Model(models.Model):
|
|
name = models.CharField(max_length=10)
|
|
|
|
class Meta:
|
|
constraints = [
|
|
models.UniqueConstraint(
|
|
fields=["name"],
|
|
name="name_uq_distinct_null",
|
|
nulls_distinct=True,
|
|
),
|
|
]
|
|
|
|
warn = Warning(
|
|
f"{connection.display_name} does not support unique constraints with nulls "
|
|
"distinct.",
|
|
hint=(
|
|
"A constraint won't be created. Silence this warning if you don't care "
|
|
"about it."
|
|
),
|
|
obj=Model,
|
|
id="models.W047",
|
|
)
|
|
expected = (
|
|
[]
|
|
if connection.features.supports_nulls_distinct_unique_constraints
|
|
else [warn]
|
|
)
|
|
self.assertEqual(Model.check(databases=self.databases), expected)
|
|
|
|
def test_unique_constraint_nulls_distinct_required_db_features(self):
|
|
class Model(models.Model):
|
|
name = models.CharField(max_length=10)
|
|
|
|
class Meta:
|
|
constraints = [
|
|
models.UniqueConstraint(
|
|
fields=["name"],
|
|
name="name_uq_distinct_null",
|
|
nulls_distinct=True,
|
|
),
|
|
]
|
|
required_db_features = {"supports_nulls_distinct_unique_constraints"}
|
|
|
|
self.assertEqual(Model.check(databases=self.databases), [])
|
|
|
|
@skipUnlessDBFeature("supports_expression_indexes")
|
|
def test_func_unique_constraint_expression_custom_lookup(self):
|
|
class Model(models.Model):
|
|
height = models.IntegerField()
|
|
weight = models.IntegerField()
|
|
|
|
class Meta:
|
|
constraints = [
|
|
models.UniqueConstraint(
|
|
models.F("height")
|
|
/ (models.F("weight__abs") + models.Value(5)),
|
|
name="name",
|
|
),
|
|
]
|
|
|
|
with register_lookup(models.IntegerField, Abs):
|
|
self.assertEqual(Model.check(databases=self.databases), [])
|
|
|
|
@skipUnlessDBFeature("supports_expression_indexes")
|
|
def test_func_unique_constraint_pointing_to_missing_field(self):
|
|
class Model(models.Model):
|
|
class Meta:
|
|
constraints = [
|
|
models.UniqueConstraint(Lower("missing_field").desc(), name="name"),
|
|
]
|
|
|
|
self.assertEqual(
|
|
Model.check(databases=self.databases),
|
|
[
|
|
Error(
|
|
"'constraints' refers to the nonexistent field 'missing_field'.",
|
|
obj=Model,
|
|
id="models.E012",
|
|
),
|
|
],
|
|
)
|
|
|
|
@skipUnlessDBFeature("supports_expression_indexes")
|
|
def test_func_unique_constraint_pointing_to_missing_field_nested(self):
|
|
class Model(models.Model):
|
|
class Meta:
|
|
constraints = [
|
|
models.UniqueConstraint(Abs(Round("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",
|
|
),
|
|
],
|
|
)
|
|
|
|
@skipUnlessDBFeature("supports_expression_indexes")
|
|
def test_func_unique_constraint_pointing_to_m2m_field(self):
|
|
class Model(models.Model):
|
|
m2m = models.ManyToManyField("self")
|
|
|
|
class Meta:
|
|
constraints = [models.UniqueConstraint(Lower("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",
|
|
),
|
|
],
|
|
)
|
|
|
|
@skipUnlessDBFeature("supports_expression_indexes")
|
|
def test_func_unique_constraint_pointing_to_non_local_field(self):
|
|
class Foo(models.Model):
|
|
field1 = models.CharField(max_length=15)
|
|
|
|
class Bar(Foo):
|
|
class Meta:
|
|
constraints = [models.UniqueConstraint(Lower("field1"), name="name")]
|
|
|
|
self.assertEqual(
|
|
Bar.check(databases=self.databases),
|
|
[
|
|
Error(
|
|
"'constraints' 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",
|
|
),
|
|
],
|
|
)
|
|
|
|
@skipUnlessDBFeature("supports_expression_indexes")
|
|
def test_func_unique_constraint_pointing_to_fk(self):
|
|
class Foo(models.Model):
|
|
id = models.CharField(primary_key=True, max_length=255)
|
|
|
|
class Bar(models.Model):
|
|
foo_1 = models.ForeignKey(Foo, models.CASCADE, related_name="bar_1")
|
|
foo_2 = models.ForeignKey(Foo, models.CASCADE, related_name="bar_2")
|
|
|
|
class Meta:
|
|
constraints = [
|
|
models.UniqueConstraint(
|
|
Lower("foo_1_id"),
|
|
Lower("foo_2"),
|
|
name="name",
|
|
),
|
|
]
|
|
|
|
self.assertEqual(Bar.check(databases=self.databases), [])
|