code: def test_boxcox1p(self, xp, scp, dtype, inverse):
      import scipy.special  # NOQA
  
      x = xp.linspace(-0.99, 1000, 1000, dtype=dtype).reshape((1, 1000))
      lmbda = xp.asarray([-5, 0, 5], dtype=dtype).reshape((3, 1))
      result = scp.special.boxcox1p(x, lmbda)
      if inverse:
          result = scp.special.inv_boxcox1p(result, lmbda)
      return result
  
imports: import numpy
  import pytest
  import cupy
  from cupy import testing
  import cupyx.scipy.special
label_desc: Use image node_id 8 for calling the TestSpecial obj's underlying member method code with example usage: obj.test_boxcox1p(xp, scp, dtype, inverse) and returns: result