def METHOD_NAME(self):
    """When the VG by the specified vg UUID not found, the module should exit with error"""
    failed = True
    self.mock_module_run_command.side_effect = [(0, VGS_OUTPUT, '')]
    expected_msg = 'Both current (Yfj4YG-c8nI-z7w5-B7Fw-i2eM-HqlF-ApFVp0) and new (vg_data_testhost2) VG are missing.'
    module_args = {
        'vg': 'Yfj4YG-c8nI-z7w5-B7Fw-i2eM-HqlF-ApFVp0',
        'vg_new': 'vg_data_testhost2',
    }
    set_module_args(args=module_args)
    with self.assertRaises(AnsibleFailJson) as result:
        self.module.main()
    self.assertEqual(len(self.mock_module_run_command.mock_calls), 1)
    self.assertIs(result.exception.args[0]['failed'], failed)
    self.assertEqual(result.exception.args[0]['msg'], expected_msg)