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import unittest
from decimal import Decimal
from django.db import connection
from django.db.backends.signals import connection_created
from django.db.migrations.writer import MigrationWriter
from django.test import TestCase
from django.test.utils import modify_settings
try:
from django.contrib.postgres.fields import (
DateRangeField,
DateTimeRangeField,
DecimalRangeField,
IntegerRangeField,
)
from django.db.backends.postgresql.psycopg_any import (
DateRange,
DateTimeRange,
DateTimeTZRange,
NumericRange,
)
except ImportError:
pass
@unittest.skipUnless(connection.vendor == "postgresql", "PostgreSQL specific tests")
class PostgresConfigTests(TestCase):
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(Decimal("1.0"), Decimal("5.0"), "()"), DecimalRangeField),
(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()
|
