'Check UID/GID switches when current effective UID is non-root.'

def test_UID(self):

    self._testUIDGIDSwitch(1, 0, 0, 0, [0, 1], [])
    self._testUIDGIDSwitch(1, 0, 1, 0, [], [])
    self._testUIDGIDSwitch(1, 0, 1, 1, [0, 1, 0, 1], [1, 0])
    self._testUIDGIDSwitch(1, 0, 2, 1, [0, 2, 0, 1], [1, 0])
