django1/tests/postgres_tests/test_apps.py

60 lines
2.5 KiB
Python

from django.db.backends.signals import connection_created
from django.db.migrations.writer import MigrationWriter
from django.test.utils import modify_settings
from . import PostgreSQLTestCase
try:
from psycopg2.extras import (
DateRange, DateTimeRange, DateTimeTZRange, NumericRange,
)
from django.contrib.postgres.fields import (
DateRangeField, DateTimeRangeField, IntegerRangeField,
)
except ImportError:
pass
class PostgresConfigTests(PostgreSQLTestCase):
def test_register_type_handlers_connection(self):
from django.contrib.postgres.signals import register_type_handlers
self.assertNotIn(register_type_handlers, connection_created._live_receivers(None))
with modify_settings(INSTALLED_APPS={'append': 'django.contrib.postgres'}):
self.assertIn(register_type_handlers, connection_created._live_receivers(None))
self.assertNotIn(register_type_handlers, connection_created._live_receivers(None))
def test_register_serializer_for_migrations(self):
tests = (
(DateRange(empty=True), DateRangeField),
(DateTimeRange(empty=True), DateRangeField),
(DateTimeTZRange(None, None, '[]'), DateTimeRangeField),
(NumericRange(1, 10), IntegerRangeField),
)
def assertNotSerializable():
for default, test_field in tests:
with self.subTest(default=default):
field = test_field(default=default)
with self.assertRaisesMessage(ValueError, 'Cannot serialize: %s' % default.__class__.__name__):
MigrationWriter.serialize(field)
assertNotSerializable()
with self.modify_settings(INSTALLED_APPS={'append': 'django.contrib.postgres'}):
for default, test_field in tests:
with self.subTest(default=default):
field = test_field(default=default)
serialized_field, imports = MigrationWriter.serialize(field)
self.assertEqual(imports, {
'import django.contrib.postgres.fields.ranges',
'import psycopg2.extras',
})
self.assertIn(
'%s.%s(default=psycopg2.extras.%r)' % (
field.__module__,
field.__class__.__name__,
default,
),
serialized_field
)
assertNotSerializable()