def METHOD_NAME(self):
    """Verify that loop_get_loop_name works as expected"""
    self.assertIs(BlockDev.loop_get_loop_name("/non/existing"), None)
    succ, self.loop = BlockDev.loop_setup(self.dev_file)
    self.assertTrue(succ)
    self.assertTrue(self.loop)
    ret_loop = BlockDev.loop_get_loop_name(self.dev_file)
    self.assertEqual(ret_loop, self.loop)