code: def test_mismatched_lengths(self, dtype):
      funclist = [-1, 0, 2, 4, 5]
      for xp in (numpy, cupy):
          x = xp.linspace(-2, 4, 6, dtype=dtype)
          condlist = [x < 0, x >= 0]
          with pytest.raises(ValueError):
              xp.piecewise(x, condlist, funclist)
  
file_path: cupy/tests/cupy_tests/functional_tests/test_piecewise.py
imports: import unittest
  import pytest
  import numpy
  import cupy
  from cupy import testing
label_desc: Use image node_id 11 for calling the TestPiecewise obj's underlying member method code with example usage: obj.test_mismatched_lengths(dtype) without return types