code: def test_shift_x(self, xp, scp):
      # gh-9844: shifted x can change values?
      y = scp.signal.upfirdn(
          xp.asarray([1, 1]), xp.asarray([1.0]), 1, 1
      )
      y1 = scp.signal.upfirdn(
          xp.asarray([1, 1]), xp.asarray([0.0, 1.0]), 1, 1
      )
      return y, y1
  
file_path: cupy/tests/cupyx_tests/scipy_tests/signal_tests/test_upfirdn.py
imports: from itertools import product
  import pytest
  import numpy
  from cupy import testing
  from cupyx.scipy.signal._upfirdn import _output_len
label_desc: Use image node_id 2 for calling the TestUpfirdn obj's underlying member method code with example usage: obj.test_shift_x(xp, scp) and returns: y,  y1