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1088a9777d
Thanks Tilman Koschnick for the report and initial patch. Thanks Carlton Gibson for the review. Regression in6b048b364c. Backport of7991111af1from master
85 lines
3.6 KiB
Python
85 lines
3.6 KiB
Python
import datetime
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from django.db import connection, transaction
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from django.db.models import F, Q
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from django.db.models.constraints import CheckConstraint
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from django.db.utils import IntegrityError
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from . import PostgreSQLTestCase
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from .models import RangesModel
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try:
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from psycopg2.extras import NumericRange
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except ImportError:
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pass
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class SchemaTests(PostgreSQLTestCase):
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def get_constraints(self, table):
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"""Get the constraints on the table using a new cursor."""
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with connection.cursor() as cursor:
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return connection.introspection.get_constraints(cursor, table)
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def test_check_constraint_range_value(self):
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constraint_name = 'ints_between'
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self.assertNotIn(constraint_name, self.get_constraints(RangesModel._meta.db_table))
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constraint = CheckConstraint(
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check=Q(ints__contained_by=NumericRange(10, 30)),
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name=constraint_name,
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)
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with connection.schema_editor() as editor:
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editor.add_constraint(RangesModel, constraint)
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with connection.cursor() as cursor:
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constraints = connection.introspection.get_constraints(cursor, RangesModel._meta.db_table)
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self.assertIn(constraint_name, constraints)
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with self.assertRaises(IntegrityError), transaction.atomic():
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RangesModel.objects.create(ints=(20, 50))
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RangesModel.objects.create(ints=(10, 30))
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def test_check_constraint_daterange_contains(self):
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constraint_name = 'dates_contains'
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self.assertNotIn(constraint_name, self.get_constraints(RangesModel._meta.db_table))
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constraint = CheckConstraint(
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check=Q(dates__contains=F('dates_inner')),
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name=constraint_name,
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)
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with connection.schema_editor() as editor:
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editor.add_constraint(RangesModel, constraint)
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with connection.cursor() as cursor:
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constraints = connection.introspection.get_constraints(cursor, RangesModel._meta.db_table)
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self.assertIn(constraint_name, constraints)
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date_1 = datetime.date(2016, 1, 1)
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date_2 = datetime.date(2016, 1, 4)
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with self.assertRaises(IntegrityError), transaction.atomic():
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RangesModel.objects.create(
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dates=(date_1, date_2),
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dates_inner=(date_1, date_2.replace(day=5)),
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)
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RangesModel.objects.create(
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dates=(date_1, date_2),
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dates_inner=(date_1, date_2),
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)
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def test_check_constraint_datetimerange_contains(self):
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constraint_name = 'timestamps_contains'
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self.assertNotIn(constraint_name, self.get_constraints(RangesModel._meta.db_table))
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constraint = CheckConstraint(
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check=Q(timestamps__contains=F('timestamps_inner')),
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name=constraint_name,
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)
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with connection.schema_editor() as editor:
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editor.add_constraint(RangesModel, constraint)
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with connection.cursor() as cursor:
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constraints = connection.introspection.get_constraints(cursor, RangesModel._meta.db_table)
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self.assertIn(constraint_name, constraints)
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datetime_1 = datetime.datetime(2016, 1, 1)
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datetime_2 = datetime.datetime(2016, 1, 2, 12)
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with self.assertRaises(IntegrityError), transaction.atomic():
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RangesModel.objects.create(
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timestamps=(datetime_1, datetime_2),
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timestamps_inner=(datetime_1, datetime_2.replace(hour=13)),
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)
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RangesModel.objects.create(
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timestamps=(datetime_1, datetime_2),
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timestamps_inner=(datetime_1, datetime_2),
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)
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