message: added unit test for None axes placeholders in fftshift
diff: @@ -606,5 +606,15 @@ class FFTShiftTest(test.TestCase):
  np.fft.ifftshift(shifted, axes=(0, 1)))
  + @test_util.run_deprecated_v1
  + def testNoneAxes(self):
  + x = array_ops.placeholder(shape=[None, None, None], dtype='float32')
  + axes_to_test = [None, 1, [1, 2]]
  + for axes in axes_to_test:
  + y_fftshift = fft_ops.fftshift(x, axes=axes)
  + y_ifftshift = fft_ops.ifftshift(x, axes=axes)
  + with self.session() as sess:
  + sess.run([y_fftshift, y_ifftshift], feed_dict={x: np.zeros((16, 256, 256))})
  +
  if __name__ == "__main__":
  test.main()
  