code: def test_homomorphic_2(self, xp, scp, n):
      # but in general we only guarantee we get the magnitude back
      rng = cupy.random.RandomState(0)
      h = rng.randn(n)
      if xp != cupy:
          h = h.get()
      h_new = scp.signal.minimum_phase(xp.convolve(h, h[::-1]))
      return h_new
  
imports: import cupy
  import cupyx.scipy.signal
  from cupy import testing
  import pytest
  from pytest import raises
label_desc: Use image node_id 3 for calling the TestMinimumPhase obj's underlying member method code with example usage: obj.test_homomorphic_2(xp, scp, n) and returns: h_new