What methods can be used to verify the correctness of migrations in a Django project?

To verify the correctness of migrations in Django, several approaches can be used:

• makemigrations --check command — checks for any unsaved changes in models that are not reflected in migrations.

• Applying migrations on a test database — running migrate on a separate database (for example, in a testing environment) ensures that migrations are applied without errors.

• Tests using TransactionTestCase — you can write tests that verify the database structure matches expectations after migrations.

• Viewing migration status with showmigrations — allows you to see which migrations have been applied and which haven't.

• Using migrate --plan — shows the migration plan without applying it, helping to understand what will change.

Example of migration verification in CI:

python manage.py makemigrations --check
python manage.py migrate --database=test