blob: 0e09a1c54606fecf51c422e1e29b49a36bbf3b11 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
|
from django.db import connection, transaction
from django.db.models import Q
from django.db.models.constraints import CheckConstraint
from django.db.utils import IntegrityError
from . import PostgreSQLTestCase
from .models import RangesModel
try:
from psycopg2.extras import NumericRange
except ImportError:
pass
class SchemaTests(PostgreSQLTestCase):
def get_constraints(self, table):
"""Get the constraints on the table using a new cursor."""
with connection.cursor() as cursor:
return connection.introspection.get_constraints(cursor, table)
def test_check_constraint_range_value(self):
constraint_name = 'ints_between'
self.assertNotIn(constraint_name, self.get_constraints(RangesModel._meta.db_table))
constraint = CheckConstraint(
check=Q(ints__contained_by=NumericRange(10, 30)),
name=constraint_name,
)
with connection.schema_editor() as editor:
editor.add_constraint(RangesModel, constraint)
with connection.cursor() as cursor:
constraints = connection.introspection.get_constraints(cursor, RangesModel._meta.db_table)
self.assertIn(constraint_name, constraints)
with self.assertRaises(IntegrityError), transaction.atomic():
RangesModel.objects.create(ints=(20, 50))
RangesModel.objects.create(ints=(10, 30))
|
