code: def test_invalid_kernel_name(self):
      with self.assertRaisesRegex(ValueError, "Invalid kernel name"):
          cupy.ElementwiseKernel("T x", "", "", "1")
  
imports: import unittest
  import numpy
  import pytest
  import cupy
  from cupy import _core
  from cupy import cuda
  from cupy import testing
label_desc: Use image node_id 1 for calling the TestElementwiseInvalidArgument obj's underlying member method code with example usage: obj.test_invalid_kernel_name() without return types