'Try creating a PTY process with setting its uid: it\'s almost the same
path as the standard path, but with a C{switchUID} call before the
exec.'

def test_mockPTYSetUid(self):

    cmd = '/mock/ouch'
    d = defer.Deferred()
    p = TrivialProcessProtocol(d)
    try:
        reactor.spawnProcess(p, cmd, ['ouch'], env=None, usePTY=True, uid=8081)
    except SystemError:
        self.assertTrue(self.mockos.exited)
        self.assertEqual(self.mockos.actions, [('fork', False), 'setsid', ('setuid', 0), ('setgid', 0), ('switchuid', 8081, 1234), 'exec', ('exit', 1)])
    else:
        self.fail('Should    not    be    here')
