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from django.core.management import call_command
from django.test import TestCase, TransactionTestCase
from .models import Book
class MigrationDataPersistenceTestCase(TransactionTestCase):
"""
Data loaded in migrations is available if
TransactionTestCase.serialized_rollback = True.
"""
available_apps = ["migration_test_data_persistence"]
serialized_rollback = True
def test_persistence(self):
self.assertEqual(
Book.objects.count(),
1,
)
class MigrationDataPersistenceClassSetup(TransactionTestCase):
"""
Data loaded in migrations is available during class setup if
TransactionTestCase.serialized_rollback = True.
"""
available_apps = ["migration_test_data_persistence"]
serialized_rollback = True
@classmethod
def setUpClass(cls):
# Simulate another TransactionTestCase having just torn down.
call_command("flush", verbosity=0, interactive=False, allow_cascade=True)
super().setUpClass()
cls.book = Book.objects.first()
def test_data_available_in_class_setup(self):
self.assertIsInstance(self.book, Book)
class MigrationDataNormalPersistenceTestCase(TestCase):
"""
Data loaded in migrations is available on TestCase
"""
def test_persistence(self):
self.assertEqual(
Book.objects.count(),
1,
)
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