769 lines
32 KiB
Python
769 lines
32 KiB
Python
import datetime
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from unittest import mock
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from django.db import (
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IntegrityError, NotSupportedError, connection, transaction,
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)
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from django.db.models import (
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CheckConstraint, Deferrable, F, Func, Q, UniqueConstraint,
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)
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from django.db.models.functions import Left
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from django.test import skipUnlessDBFeature
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from django.utils import timezone
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from . import PostgreSQLTestCase
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from .models import HotelReservation, RangesModel, Room, Scene
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try:
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from psycopg2.extras import DateRange, NumericRange
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from django.contrib.postgres.constraints import ExclusionConstraint
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from django.contrib.postgres.fields import (
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DateTimeRangeField, RangeBoundary, RangeOperators,
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)
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except ImportError:
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pass
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class SchemaTests(PostgreSQLTestCase):
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get_opclass_query = '''
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SELECT opcname, c.relname FROM pg_opclass AS oc
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JOIN pg_index as i on oc.oid = ANY(i.indclass)
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JOIN pg_class as c on c.oid = i.indexrelid
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WHERE c.relname = %s
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'''
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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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self.assertIn(constraint_name, self.get_constraints(RangesModel._meta.db_table))
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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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self.assertIn(constraint_name, self.get_constraints(RangesModel._meta.db_table))
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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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self.assertIn(constraint_name, self.get_constraints(RangesModel._meta.db_table))
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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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def test_opclass(self):
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constraint = UniqueConstraint(
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name='test_opclass',
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fields=['scene'],
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opclasses=['varchar_pattern_ops'],
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)
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with connection.schema_editor() as editor:
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editor.add_constraint(Scene, constraint)
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self.assertIn(constraint.name, self.get_constraints(Scene._meta.db_table))
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with editor.connection.cursor() as cursor:
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cursor.execute(self.get_opclass_query, [constraint.name])
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self.assertEqual(
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cursor.fetchall(),
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[('varchar_pattern_ops', constraint.name)],
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)
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# Drop the constraint.
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with connection.schema_editor() as editor:
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editor.remove_constraint(Scene, constraint)
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self.assertNotIn(constraint.name, self.get_constraints(Scene._meta.db_table))
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def test_opclass_multiple_columns(self):
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constraint = UniqueConstraint(
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name='test_opclass_multiple',
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fields=['scene', 'setting'],
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opclasses=['varchar_pattern_ops', 'text_pattern_ops'],
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)
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with connection.schema_editor() as editor:
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editor.add_constraint(Scene, constraint)
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with editor.connection.cursor() as cursor:
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cursor.execute(self.get_opclass_query, [constraint.name])
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expected_opclasses = (
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('varchar_pattern_ops', constraint.name),
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('text_pattern_ops', constraint.name),
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)
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self.assertCountEqual(cursor.fetchall(), expected_opclasses)
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def test_opclass_partial(self):
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constraint = UniqueConstraint(
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name='test_opclass_partial',
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fields=['scene'],
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opclasses=['varchar_pattern_ops'],
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condition=Q(setting__contains="Sir Bedemir's Castle"),
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)
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with connection.schema_editor() as editor:
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editor.add_constraint(Scene, constraint)
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with editor.connection.cursor() as cursor:
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cursor.execute(self.get_opclass_query, [constraint.name])
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self.assertCountEqual(
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cursor.fetchall(),
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[('varchar_pattern_ops', constraint.name)],
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)
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@skipUnlessDBFeature('supports_covering_indexes')
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def test_opclass_include(self):
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constraint = UniqueConstraint(
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name='test_opclass_include',
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fields=['scene'],
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opclasses=['varchar_pattern_ops'],
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include=['setting'],
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)
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with connection.schema_editor() as editor:
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editor.add_constraint(Scene, constraint)
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with editor.connection.cursor() as cursor:
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cursor.execute(self.get_opclass_query, [constraint.name])
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self.assertCountEqual(
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cursor.fetchall(),
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[('varchar_pattern_ops', constraint.name)],
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)
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class ExclusionConstraintTests(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_invalid_condition(self):
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msg = 'ExclusionConstraint.condition must be a Q instance.'
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with self.assertRaisesMessage(ValueError, msg):
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ExclusionConstraint(
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index_type='GIST',
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name='exclude_invalid_condition',
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expressions=[(F('datespan'), RangeOperators.OVERLAPS)],
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condition=F('invalid'),
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)
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def test_invalid_index_type(self):
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msg = 'Exclusion constraints only support GiST or SP-GiST indexes.'
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with self.assertRaisesMessage(ValueError, msg):
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ExclusionConstraint(
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index_type='gin',
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name='exclude_invalid_index_type',
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expressions=[(F('datespan'), RangeOperators.OVERLAPS)],
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)
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def test_invalid_expressions(self):
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msg = 'The expressions must be a list of 2-tuples.'
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for expressions in (['foo'], [('foo')], [('foo_1', 'foo_2', 'foo_3')]):
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with self.subTest(expressions), self.assertRaisesMessage(ValueError, msg):
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ExclusionConstraint(
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index_type='GIST',
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name='exclude_invalid_expressions',
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expressions=expressions,
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)
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def test_empty_expressions(self):
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msg = 'At least one expression is required to define an exclusion constraint.'
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for empty_expressions in (None, []):
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with self.subTest(empty_expressions), self.assertRaisesMessage(ValueError, msg):
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ExclusionConstraint(
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index_type='GIST',
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name='exclude_empty_expressions',
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expressions=empty_expressions,
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)
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def test_invalid_deferrable(self):
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msg = 'ExclusionConstraint.deferrable must be a Deferrable instance.'
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with self.assertRaisesMessage(ValueError, msg):
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ExclusionConstraint(
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name='exclude_invalid_deferrable',
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expressions=[(F('datespan'), RangeOperators.OVERLAPS)],
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deferrable='invalid',
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)
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def test_deferrable_with_condition(self):
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msg = 'ExclusionConstraint with conditions cannot be deferred.'
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with self.assertRaisesMessage(ValueError, msg):
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ExclusionConstraint(
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name='exclude_invalid_condition',
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expressions=[(F('datespan'), RangeOperators.OVERLAPS)],
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condition=Q(cancelled=False),
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deferrable=Deferrable.DEFERRED,
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)
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def test_invalid_include_type(self):
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msg = 'ExclusionConstraint.include must be a list or tuple.'
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with self.assertRaisesMessage(ValueError, msg):
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ExclusionConstraint(
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name='exclude_invalid_include',
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expressions=[(F('datespan'), RangeOperators.OVERLAPS)],
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include='invalid',
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)
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def test_invalid_include_index_type(self):
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msg = 'Covering exclusion constraints only support GiST indexes.'
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with self.assertRaisesMessage(ValueError, msg):
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ExclusionConstraint(
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name='exclude_invalid_index_type',
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expressions=[(F('datespan'), RangeOperators.OVERLAPS)],
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include=['cancelled'],
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index_type='spgist',
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)
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def test_invalid_opclasses_type(self):
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msg = 'ExclusionConstraint.opclasses must be a list or tuple.'
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with self.assertRaisesMessage(ValueError, msg):
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ExclusionConstraint(
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name='exclude_invalid_opclasses',
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expressions=[(F('datespan'), RangeOperators.OVERLAPS)],
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opclasses='invalid',
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)
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def test_opclasses_and_expressions_same_length(self):
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msg = (
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'ExclusionConstraint.expressions and '
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'ExclusionConstraint.opclasses must have the same number of '
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'elements.'
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)
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with self.assertRaisesMessage(ValueError, msg):
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ExclusionConstraint(
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name='exclude_invalid_expressions_opclasses_length',
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expressions=[(F('datespan'), RangeOperators.OVERLAPS)],
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opclasses=['foo', 'bar'],
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)
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def test_repr(self):
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constraint = ExclusionConstraint(
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name='exclude_overlapping',
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expressions=[
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(F('datespan'), RangeOperators.OVERLAPS),
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(F('room'), RangeOperators.EQUAL),
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],
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)
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self.assertEqual(
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repr(constraint),
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"<ExclusionConstraint: index_type=GIST, expressions=["
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"(F(datespan), '&&'), (F(room), '=')]>",
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)
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constraint = ExclusionConstraint(
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name='exclude_overlapping',
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expressions=[(F('datespan'), RangeOperators.ADJACENT_TO)],
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condition=Q(cancelled=False),
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index_type='SPGiST',
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)
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self.assertEqual(
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repr(constraint),
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"<ExclusionConstraint: index_type=SPGiST, expressions=["
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"(F(datespan), '-|-')], condition=(AND: ('cancelled', False))>",
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)
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constraint = ExclusionConstraint(
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name='exclude_overlapping',
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expressions=[(F('datespan'), RangeOperators.ADJACENT_TO)],
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deferrable=Deferrable.IMMEDIATE,
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)
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self.assertEqual(
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repr(constraint),
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"<ExclusionConstraint: index_type=GIST, expressions=["
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"(F(datespan), '-|-')], deferrable=Deferrable.IMMEDIATE>",
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)
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constraint = ExclusionConstraint(
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name='exclude_overlapping',
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expressions=[(F('datespan'), RangeOperators.ADJACENT_TO)],
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include=['cancelled', 'room'],
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)
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self.assertEqual(
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repr(constraint),
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"<ExclusionConstraint: index_type=GIST, expressions=["
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"(F(datespan), '-|-')], include=('cancelled', 'room')>",
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)
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constraint = ExclusionConstraint(
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name='exclude_overlapping',
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expressions=[(F('datespan'), RangeOperators.ADJACENT_TO)],
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opclasses=['range_ops'],
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)
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self.assertEqual(
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repr(constraint),
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"<ExclusionConstraint: index_type=GIST, expressions=["
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"(F(datespan), '-|-')], opclasses=['range_ops']>",
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)
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def test_eq(self):
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constraint_1 = ExclusionConstraint(
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name='exclude_overlapping',
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expressions=[
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(F('datespan'), RangeOperators.OVERLAPS),
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(F('room'), RangeOperators.EQUAL),
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],
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condition=Q(cancelled=False),
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)
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constraint_2 = ExclusionConstraint(
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name='exclude_overlapping',
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expressions=[
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('datespan', RangeOperators.OVERLAPS),
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('room', RangeOperators.EQUAL),
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],
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)
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constraint_3 = ExclusionConstraint(
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name='exclude_overlapping',
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expressions=[('datespan', RangeOperators.OVERLAPS)],
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condition=Q(cancelled=False),
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)
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constraint_4 = ExclusionConstraint(
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name='exclude_overlapping',
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expressions=[
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('datespan', RangeOperators.OVERLAPS),
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('room', RangeOperators.EQUAL),
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],
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deferrable=Deferrable.DEFERRED,
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)
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constraint_5 = ExclusionConstraint(
|
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name='exclude_overlapping',
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expressions=[
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('datespan', RangeOperators.OVERLAPS),
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('room', RangeOperators.EQUAL),
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],
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deferrable=Deferrable.IMMEDIATE,
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)
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constraint_6 = ExclusionConstraint(
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name='exclude_overlapping',
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expressions=[
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('datespan', RangeOperators.OVERLAPS),
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('room', RangeOperators.EQUAL),
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],
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deferrable=Deferrable.IMMEDIATE,
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include=['cancelled'],
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)
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constraint_7 = ExclusionConstraint(
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name='exclude_overlapping',
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expressions=[
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('datespan', RangeOperators.OVERLAPS),
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('room', RangeOperators.EQUAL),
|
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],
|
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include=['cancelled'],
|
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)
|
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constraint_8 = ExclusionConstraint(
|
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name='exclude_overlapping',
|
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expressions=[
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('datespan', RangeOperators.OVERLAPS),
|
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('room', RangeOperators.EQUAL),
|
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],
|
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include=['cancelled'],
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opclasses=['range_ops', 'range_ops']
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)
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constraint_9 = ExclusionConstraint(
|
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name='exclude_overlapping',
|
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expressions=[
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('datespan', RangeOperators.OVERLAPS),
|
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('room', RangeOperators.EQUAL),
|
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],
|
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opclasses=['range_ops', 'range_ops']
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)
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self.assertEqual(constraint_1, constraint_1)
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self.assertEqual(constraint_1, mock.ANY)
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self.assertNotEqual(constraint_1, constraint_2)
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self.assertNotEqual(constraint_1, constraint_3)
|
|
self.assertNotEqual(constraint_1, constraint_4)
|
|
self.assertNotEqual(constraint_2, constraint_3)
|
|
self.assertNotEqual(constraint_2, constraint_4)
|
|
self.assertNotEqual(constraint_2, constraint_7)
|
|
self.assertNotEqual(constraint_2, constraint_9)
|
|
self.assertNotEqual(constraint_4, constraint_5)
|
|
self.assertNotEqual(constraint_5, constraint_6)
|
|
self.assertNotEqual(constraint_7, constraint_8)
|
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self.assertNotEqual(constraint_1, object())
|
|
|
|
def test_deconstruct(self):
|
|
constraint = ExclusionConstraint(
|
|
name='exclude_overlapping',
|
|
expressions=[('datespan', RangeOperators.OVERLAPS), ('room', RangeOperators.EQUAL)],
|
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)
|
|
path, args, kwargs = constraint.deconstruct()
|
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self.assertEqual(path, 'django.contrib.postgres.constraints.ExclusionConstraint')
|
|
self.assertEqual(args, ())
|
|
self.assertEqual(kwargs, {
|
|
'name': 'exclude_overlapping',
|
|
'expressions': [('datespan', RangeOperators.OVERLAPS), ('room', RangeOperators.EQUAL)],
|
|
})
|
|
|
|
def test_deconstruct_index_type(self):
|
|
constraint = ExclusionConstraint(
|
|
name='exclude_overlapping',
|
|
index_type='SPGIST',
|
|
expressions=[('datespan', RangeOperators.OVERLAPS), ('room', RangeOperators.EQUAL)],
|
|
)
|
|
path, args, kwargs = constraint.deconstruct()
|
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self.assertEqual(path, 'django.contrib.postgres.constraints.ExclusionConstraint')
|
|
self.assertEqual(args, ())
|
|
self.assertEqual(kwargs, {
|
|
'name': 'exclude_overlapping',
|
|
'index_type': 'SPGIST',
|
|
'expressions': [('datespan', RangeOperators.OVERLAPS), ('room', RangeOperators.EQUAL)],
|
|
})
|
|
|
|
def test_deconstruct_condition(self):
|
|
constraint = ExclusionConstraint(
|
|
name='exclude_overlapping',
|
|
expressions=[('datespan', RangeOperators.OVERLAPS), ('room', RangeOperators.EQUAL)],
|
|
condition=Q(cancelled=False),
|
|
)
|
|
path, args, kwargs = constraint.deconstruct()
|
|
self.assertEqual(path, 'django.contrib.postgres.constraints.ExclusionConstraint')
|
|
self.assertEqual(args, ())
|
|
self.assertEqual(kwargs, {
|
|
'name': 'exclude_overlapping',
|
|
'expressions': [('datespan', RangeOperators.OVERLAPS), ('room', RangeOperators.EQUAL)],
|
|
'condition': Q(cancelled=False),
|
|
})
|
|
|
|
def test_deconstruct_deferrable(self):
|
|
constraint = ExclusionConstraint(
|
|
name='exclude_overlapping',
|
|
expressions=[('datespan', RangeOperators.OVERLAPS)],
|
|
deferrable=Deferrable.DEFERRED,
|
|
)
|
|
path, args, kwargs = constraint.deconstruct()
|
|
self.assertEqual(path, 'django.contrib.postgres.constraints.ExclusionConstraint')
|
|
self.assertEqual(args, ())
|
|
self.assertEqual(kwargs, {
|
|
'name': 'exclude_overlapping',
|
|
'expressions': [('datespan', RangeOperators.OVERLAPS)],
|
|
'deferrable': Deferrable.DEFERRED,
|
|
})
|
|
|
|
def test_deconstruct_include(self):
|
|
constraint = ExclusionConstraint(
|
|
name='exclude_overlapping',
|
|
expressions=[('datespan', RangeOperators.OVERLAPS)],
|
|
include=['cancelled', 'room'],
|
|
)
|
|
path, args, kwargs = constraint.deconstruct()
|
|
self.assertEqual(path, 'django.contrib.postgres.constraints.ExclusionConstraint')
|
|
self.assertEqual(args, ())
|
|
self.assertEqual(kwargs, {
|
|
'name': 'exclude_overlapping',
|
|
'expressions': [('datespan', RangeOperators.OVERLAPS)],
|
|
'include': ('cancelled', 'room'),
|
|
})
|
|
|
|
def test_deconstruct_opclasses(self):
|
|
constraint = ExclusionConstraint(
|
|
name='exclude_overlapping',
|
|
expressions=[('datespan', RangeOperators.OVERLAPS)],
|
|
opclasses=['range_ops'],
|
|
)
|
|
path, args, kwargs = constraint.deconstruct()
|
|
self.assertEqual(path, 'django.contrib.postgres.constraints.ExclusionConstraint')
|
|
self.assertEqual(args, ())
|
|
self.assertEqual(kwargs, {
|
|
'name': 'exclude_overlapping',
|
|
'expressions': [('datespan', RangeOperators.OVERLAPS)],
|
|
'opclasses': ['range_ops'],
|
|
})
|
|
|
|
def _test_range_overlaps(self, constraint):
|
|
# Create exclusion constraint.
|
|
self.assertNotIn(constraint.name, self.get_constraints(HotelReservation._meta.db_table))
|
|
with connection.schema_editor() as editor:
|
|
editor.add_constraint(HotelReservation, constraint)
|
|
self.assertIn(constraint.name, self.get_constraints(HotelReservation._meta.db_table))
|
|
# Add initial reservations.
|
|
room101 = Room.objects.create(number=101)
|
|
room102 = Room.objects.create(number=102)
|
|
datetimes = [
|
|
timezone.datetime(2018, 6, 20),
|
|
timezone.datetime(2018, 6, 24),
|
|
timezone.datetime(2018, 6, 26),
|
|
timezone.datetime(2018, 6, 28),
|
|
timezone.datetime(2018, 6, 29),
|
|
]
|
|
HotelReservation.objects.create(
|
|
datespan=DateRange(datetimes[0].date(), datetimes[1].date()),
|
|
start=datetimes[0],
|
|
end=datetimes[1],
|
|
room=room102,
|
|
)
|
|
HotelReservation.objects.create(
|
|
datespan=DateRange(datetimes[1].date(), datetimes[3].date()),
|
|
start=datetimes[1],
|
|
end=datetimes[3],
|
|
room=room102,
|
|
)
|
|
# Overlap dates.
|
|
with self.assertRaises(IntegrityError), transaction.atomic():
|
|
reservation = HotelReservation(
|
|
datespan=(datetimes[1].date(), datetimes[2].date()),
|
|
start=datetimes[1],
|
|
end=datetimes[2],
|
|
room=room102,
|
|
)
|
|
reservation.save()
|
|
# Valid range.
|
|
HotelReservation.objects.bulk_create([
|
|
# Other room.
|
|
HotelReservation(
|
|
datespan=(datetimes[1].date(), datetimes[2].date()),
|
|
start=datetimes[1],
|
|
end=datetimes[2],
|
|
room=room101,
|
|
),
|
|
# Cancelled reservation.
|
|
HotelReservation(
|
|
datespan=(datetimes[1].date(), datetimes[1].date()),
|
|
start=datetimes[1],
|
|
end=datetimes[2],
|
|
room=room102,
|
|
cancelled=True,
|
|
),
|
|
# Other adjacent dates.
|
|
HotelReservation(
|
|
datespan=(datetimes[3].date(), datetimes[4].date()),
|
|
start=datetimes[3],
|
|
end=datetimes[4],
|
|
room=room102,
|
|
),
|
|
])
|
|
|
|
def test_range_overlaps_custom(self):
|
|
class TsTzRange(Func):
|
|
function = 'TSTZRANGE'
|
|
output_field = DateTimeRangeField()
|
|
|
|
constraint = ExclusionConstraint(
|
|
name='exclude_overlapping_reservations_custom',
|
|
expressions=[
|
|
(TsTzRange('start', 'end', RangeBoundary()), RangeOperators.OVERLAPS),
|
|
('room', RangeOperators.EQUAL)
|
|
],
|
|
condition=Q(cancelled=False),
|
|
opclasses=['range_ops', 'gist_int4_ops'],
|
|
)
|
|
self._test_range_overlaps(constraint)
|
|
|
|
def test_range_overlaps(self):
|
|
constraint = ExclusionConstraint(
|
|
name='exclude_overlapping_reservations',
|
|
expressions=[
|
|
(F('datespan'), RangeOperators.OVERLAPS),
|
|
('room', RangeOperators.EQUAL)
|
|
],
|
|
condition=Q(cancelled=False),
|
|
)
|
|
self._test_range_overlaps(constraint)
|
|
|
|
def test_range_adjacent(self):
|
|
constraint_name = 'ints_adjacent'
|
|
self.assertNotIn(constraint_name, self.get_constraints(RangesModel._meta.db_table))
|
|
constraint = ExclusionConstraint(
|
|
name=constraint_name,
|
|
expressions=[('ints', RangeOperators.ADJACENT_TO)],
|
|
)
|
|
with connection.schema_editor() as editor:
|
|
editor.add_constraint(RangesModel, constraint)
|
|
self.assertIn(constraint_name, self.get_constraints(RangesModel._meta.db_table))
|
|
RangesModel.objects.create(ints=(20, 50))
|
|
with self.assertRaises(IntegrityError), transaction.atomic():
|
|
RangesModel.objects.create(ints=(10, 20))
|
|
RangesModel.objects.create(ints=(10, 19))
|
|
RangesModel.objects.create(ints=(51, 60))
|
|
# Drop the constraint.
|
|
with connection.schema_editor() as editor:
|
|
editor.remove_constraint(RangesModel, constraint)
|
|
self.assertNotIn(constraint_name, self.get_constraints(RangesModel._meta.db_table))
|
|
|
|
def test_expressions_with_params(self):
|
|
constraint_name = 'scene_left_equal'
|
|
self.assertNotIn(constraint_name, self.get_constraints(Scene._meta.db_table))
|
|
constraint = ExclusionConstraint(
|
|
name=constraint_name,
|
|
expressions=[(Left('scene', 4), RangeOperators.EQUAL)],
|
|
)
|
|
with connection.schema_editor() as editor:
|
|
editor.add_constraint(Scene, constraint)
|
|
self.assertIn(constraint_name, self.get_constraints(Scene._meta.db_table))
|
|
|
|
def test_range_adjacent_initially_deferred(self):
|
|
constraint_name = 'ints_adjacent_deferred'
|
|
self.assertNotIn(constraint_name, self.get_constraints(RangesModel._meta.db_table))
|
|
constraint = ExclusionConstraint(
|
|
name=constraint_name,
|
|
expressions=[('ints', RangeOperators.ADJACENT_TO)],
|
|
deferrable=Deferrable.DEFERRED,
|
|
)
|
|
with connection.schema_editor() as editor:
|
|
editor.add_constraint(RangesModel, constraint)
|
|
self.assertIn(constraint_name, self.get_constraints(RangesModel._meta.db_table))
|
|
RangesModel.objects.create(ints=(20, 50))
|
|
adjacent_range = RangesModel.objects.create(ints=(10, 20))
|
|
# Constraint behavior can be changed with SET CONSTRAINTS.
|
|
with self.assertRaises(IntegrityError):
|
|
with transaction.atomic(), connection.cursor() as cursor:
|
|
quoted_name = connection.ops.quote_name(constraint_name)
|
|
cursor.execute('SET CONSTRAINTS %s IMMEDIATE' % quoted_name)
|
|
# Remove adjacent range before the end of transaction.
|
|
adjacent_range.delete()
|
|
RangesModel.objects.create(ints=(10, 19))
|
|
RangesModel.objects.create(ints=(51, 60))
|
|
|
|
@skipUnlessDBFeature('supports_covering_gist_indexes')
|
|
def test_range_adjacent_include(self):
|
|
constraint_name = 'ints_adjacent_include'
|
|
self.assertNotIn(constraint_name, self.get_constraints(RangesModel._meta.db_table))
|
|
constraint = ExclusionConstraint(
|
|
name=constraint_name,
|
|
expressions=[('ints', RangeOperators.ADJACENT_TO)],
|
|
include=['decimals', 'ints'],
|
|
index_type='gist',
|
|
)
|
|
with connection.schema_editor() as editor:
|
|
editor.add_constraint(RangesModel, constraint)
|
|
self.assertIn(constraint_name, self.get_constraints(RangesModel._meta.db_table))
|
|
RangesModel.objects.create(ints=(20, 50))
|
|
with self.assertRaises(IntegrityError), transaction.atomic():
|
|
RangesModel.objects.create(ints=(10, 20))
|
|
RangesModel.objects.create(ints=(10, 19))
|
|
RangesModel.objects.create(ints=(51, 60))
|
|
|
|
@skipUnlessDBFeature('supports_covering_gist_indexes')
|
|
def test_range_adjacent_include_condition(self):
|
|
constraint_name = 'ints_adjacent_include_condition'
|
|
self.assertNotIn(constraint_name, self.get_constraints(RangesModel._meta.db_table))
|
|
constraint = ExclusionConstraint(
|
|
name=constraint_name,
|
|
expressions=[('ints', RangeOperators.ADJACENT_TO)],
|
|
include=['decimals'],
|
|
condition=Q(id__gte=100),
|
|
)
|
|
with connection.schema_editor() as editor:
|
|
editor.add_constraint(RangesModel, constraint)
|
|
self.assertIn(constraint_name, self.get_constraints(RangesModel._meta.db_table))
|
|
|
|
@skipUnlessDBFeature('supports_covering_gist_indexes')
|
|
def test_range_adjacent_include_deferrable(self):
|
|
constraint_name = 'ints_adjacent_include_deferrable'
|
|
self.assertNotIn(constraint_name, self.get_constraints(RangesModel._meta.db_table))
|
|
constraint = ExclusionConstraint(
|
|
name=constraint_name,
|
|
expressions=[('ints', RangeOperators.ADJACENT_TO)],
|
|
include=['decimals'],
|
|
deferrable=Deferrable.DEFERRED,
|
|
)
|
|
with connection.schema_editor() as editor:
|
|
editor.add_constraint(RangesModel, constraint)
|
|
self.assertIn(constraint_name, self.get_constraints(RangesModel._meta.db_table))
|
|
|
|
def test_include_not_supported(self):
|
|
constraint_name = 'ints_adjacent_include_not_supported'
|
|
constraint = ExclusionConstraint(
|
|
name=constraint_name,
|
|
expressions=[('ints', RangeOperators.ADJACENT_TO)],
|
|
include=['id'],
|
|
)
|
|
msg = 'Covering exclusion constraints requires PostgreSQL 12+.'
|
|
with connection.schema_editor() as editor:
|
|
with mock.patch(
|
|
'django.db.backends.postgresql.features.DatabaseFeatures.supports_covering_gist_indexes',
|
|
False,
|
|
):
|
|
with self.assertRaisesMessage(NotSupportedError, msg):
|
|
editor.add_constraint(RangesModel, constraint)
|
|
|
|
def test_range_adjacent_opclasses(self):
|
|
constraint_name = 'ints_adjacent_opclasses'
|
|
self.assertNotIn(constraint_name, self.get_constraints(RangesModel._meta.db_table))
|
|
constraint = ExclusionConstraint(
|
|
name=constraint_name,
|
|
expressions=[('ints', RangeOperators.ADJACENT_TO)],
|
|
opclasses=['range_ops'],
|
|
)
|
|
with connection.schema_editor() as editor:
|
|
editor.add_constraint(RangesModel, constraint)
|
|
self.assertIn(constraint_name, self.get_constraints(RangesModel._meta.db_table))
|
|
RangesModel.objects.create(ints=(20, 50))
|
|
with self.assertRaises(IntegrityError), transaction.atomic():
|
|
RangesModel.objects.create(ints=(10, 20))
|
|
RangesModel.objects.create(ints=(10, 19))
|
|
RangesModel.objects.create(ints=(51, 60))
|
|
# Drop the constraint.
|
|
with connection.schema_editor() as editor:
|
|
editor.remove_constraint(RangesModel, constraint)
|
|
self.assertNotIn(constraint_name, self.get_constraints(RangesModel._meta.db_table))
|
|
|
|
def test_range_adjacent_opclasses_condition(self):
|
|
constraint_name = 'ints_adjacent_opclasses_condition'
|
|
self.assertNotIn(constraint_name, self.get_constraints(RangesModel._meta.db_table))
|
|
constraint = ExclusionConstraint(
|
|
name=constraint_name,
|
|
expressions=[('ints', RangeOperators.ADJACENT_TO)],
|
|
opclasses=['range_ops'],
|
|
condition=Q(id__gte=100),
|
|
)
|
|
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_adjacent_opclasses_deferrable(self):
|
|
constraint_name = 'ints_adjacent_opclasses_deferrable'
|
|
self.assertNotIn(constraint_name, self.get_constraints(RangesModel._meta.db_table))
|
|
constraint = ExclusionConstraint(
|
|
name=constraint_name,
|
|
expressions=[('ints', RangeOperators.ADJACENT_TO)],
|
|
opclasses=['range_ops'],
|
|
deferrable=Deferrable.DEFERRED,
|
|
)
|
|
with connection.schema_editor() as editor:
|
|
editor.add_constraint(RangesModel, constraint)
|
|
self.assertIn(constraint_name, self.get_constraints(RangesModel._meta.db_table))
|
|
|
|
@skipUnlessDBFeature('supports_covering_gist_indexes')
|
|
def test_range_adjacent_opclasses_include(self):
|
|
constraint_name = 'ints_adjacent_opclasses_include'
|
|
self.assertNotIn(constraint_name, self.get_constraints(RangesModel._meta.db_table))
|
|
constraint = ExclusionConstraint(
|
|
name=constraint_name,
|
|
expressions=[('ints', RangeOperators.ADJACENT_TO)],
|
|
opclasses=['range_ops'],
|
|
include=['decimals'],
|
|
)
|
|
with connection.schema_editor() as editor:
|
|
editor.add_constraint(RangesModel, constraint)
|
|
self.assertIn(constraint_name, self.get_constraints(RangesModel._meta.db_table))
|