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[3.2.x] Fixed #32392 -- Fixed ExclusionConstraint crash with Cast() in expressions.

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Backport of fdfbc66331 from master
This commit is contained in:
Tilman Koschnick
2021-01-28 17:50:54 +01:00
committed by Mariusz Felisiak
parent f4d51e12ae
commit 18cac6bbfb
4 changed files with 15 additions and 23 deletions
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15
tests/postgres_tests/test_constraints.py
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@@ -5,10 +5,10 @@ from django.db import (
IntegrityError, NotSupportedError, connection, transaction,
)
from django.db.models import (
CheckConstraint, Deferrable, F, Func, Q, UniqueConstraint,
CheckConstraint, Deferrable, F, Func, IntegerField, Q, UniqueConstraint,
)
from django.db.models.fields.json import KeyTextTransform
from django.db.models.functions import Left
from django.db.models.functions import Cast, Left
from django.test import skipUnlessDBFeature
from django.utils import timezone
@@ -783,3 +783,14 @@ class ExclusionConstraintTests(PostgreSQLTestCase):
with connection.schema_editor() as editor:
editor.add_constraint(RangesModel, constraint)
self.assertIn(constraint_name, self.get_constraints(RangesModel._meta.db_table))
def test_range_equal_cast(self):
constraint_name = 'exclusion_equal_room_cast'
self.assertNotIn(constraint_name, self.get_constraints(Room._meta.db_table))
constraint = ExclusionConstraint(
name=constraint_name,
expressions=[(Cast('number', IntegerField()), RangeOperators.EQUAL)],
)
with connection.schema_editor() as editor:
editor.add_constraint(Room, constraint)
self.assertIn(constraint_name, self.get_constraints(Room._meta.db_table))