@requires_system_grains
    def test_get_output_volume(self, grains=None):
        ret = self.run_function('desktop.get_output_volume')
        self.assertIsNotNone(ret)
Tests that index file is read only once at the class level.
dataset/ETHPy150Open saltstack/salt/tests/integration/modules/mac_desktop.py/MacDesktopTestCase.test_get_output_volume--crossover with--dataset/ETHPy150Open google/textfsm/clitable_test.py/UnitTestCliTable.testRepeatRead