from django.core.management import call_command

from django.test import override_settings

from .test_base import MigrationTestBase

class Tests(MigrationTestBase):

    """

    Deprecated model fields should still be usable in historic migrations.

    """

    @override_settings(

        MIGRATION_MODULES={"migrations": "migrations.deprecated_field_migrations"}

    )

    def test_migrate(self):

        # Make sure no tables are created

        self.assertTableNotExists("migrations_ipaddressfield")

        # Run migration

        call_command("migrate", verbosity=0)

        # Make sure the right tables exist

        self.assertTableExists("migrations_ipaddressfield")

        # Unmigrate everything

        call_command("migrate", "migrations", "zero", verbosity=0)

        # Make sure it's all gone

        self.assertTableNotExists("migrations_ipaddressfield")