def test_check_composite_noavail(self):
'''calling with --check-composite and no available driver'''
sys.argv = ['ui-test', '--check-composite']
ui = sandbox.TestUI()
h = XorgDriverHandler(ui, 'vanilla3d', 'mesa-vanilla', 'v3d',
'vanilla')
self.failIf(h.enabled())
ui.backend().handlers[h.id()] = h
self.assertEqual(ui.run(), 1)
self.stop_capture()
self.assert_('no available' in self.stderr)
