def test_app_command_no_apps(self):
        args = ['app_command']
        out, err = self.run_manage(args)
        self.assertOutput(err, 'Error: Enter at least one appname.')
Tests add_categories_to_reviews to make sure it is properly running
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.4/tests/regressiontests/admin_scripts/tests.py/CommandTypes.test_app_command_no_apps--crossover with--dataset/ETHPy150Open Yelp/dataset-examples/test/test_category_predictor.py/TestCategoryPredictor.test_categories_to_reviews