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import os
from django.core.management import call_command
from django.test import TestCase, override_settings
from django_celery_results import migrations as result_migrations
class MigrationTests(TestCase):
def test_no_duplicate_migration_numbers(self):
"""Verify no duplicate migration numbers.
Migration files with the same number can cause issues with
backward migrations, so avoid them.
"""
path = os.path.dirname(result_migrations.__file__)
files = [f[:4] for f in os.listdir(path) if f.endswith('.py')]
self.assertEqual(
len(files), len(set(files)),
msg='Detected migration files with the same migration number')
def test_models_match_migrations(self):
"""Make sure that no pending migrations exist for the app.
Here just detect if model changes exist that require
a migration, and if so we fail.
"""
call_command(
"makemigrations", "django_celery_results", "--check", "--dry-run"
)
@override_settings(DEFAULT_AUTO_FIELD='django.db.models.BigAutoField')
def test_models_match_migrations_with_changed_default_auto_field(self):
"""Test with changing default_auto_field.
This logic make sure that no pending migrations created even if
the user changes the `DEFAULT_AUTO_FIELD`.
"""
self.test_models_match_migrations()
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