Disable migrations while testing Django

settings.py

# A quick but effective hack for disabling migrations while running Django tests.
# Put this in settings.py below the existing MIGRATION_MODULES definition, if that exists:

if "test" in sys.argv[1:]:
    class DisableMigrations(object):
        def __contains__(self, item):
            return True
        def __getitem__(self, item):
            return "notmigrations"

    MIGRATION_MODULES = DisableMigrations()

what are the side effects of disableing the migrations?

https://docs.djangoproject.com/en/5.0/ref/settings/#migrate