test_migrate.py 文件源码

def test_drop_not_null_not_in_version(self):
        another_column = CharField(default='')
        migrate(migrator.add_column('food', 'another_column', another_column))

        # drop the field from the nested version
        migrator.drop_column('foodversion', 'another_column').run()
        self.assertTableDoesNotHaveColumn('foodversion', 'another_column')

        models = introspector.generate_models()
        food = models['food']
        self.assertFalse(food.another_column.null)

        migrate(migrator.drop_not_null('food', 'another_column'))
        models = introspector.generate_models()
        food = models['food']
        self.assertTrue(food.another_column.null)
        self.assertTableDoesNotHaveColumn('foodversion', 'another_column')