def testPositive(self):
    for self.force_gpu in self._gpu_modes():
      self.assertArrayNear(self._LinSpace(1., 5., 1), np.array([1.]), 1e-5)
      self.assertArrayNear(self._LinSpace(1., 5., 2), np.array([1., 5.]), 1e-5)
      self.assertArrayNear(