code: def test_expm1(self, xp, scp, dtype):
      vals = xp.linspace(-50, 50, 200, dtype=dtype)
      if xp.dtype(dtype).kind == "c":
          # broadcast to mix small and large real and imaginary parts
          vals = vals[:, xp.newaxis] + 1j * vals[xp.newaxis, :]
      return scp.special.expm1(vals)
  
imports: import math
  import cupy
  import numpy
  import pytest
  import cupyx.scipy.special
  from cupy import testing
  from cupy.testing import assert_array_equal, assert_array_almost_equal
  from cupy.testing import numpy_cupy_allclose
label_desc: Use image node_id 11 for calling the TestBasic obj's underlying member method code with example usage: obj.test_expm1(xp, scp, dtype) and returns: scp