code: def test_no_numpy_function(self):
      with self.assertRaises(ValueError):
          testing.unary_math_function_unittest(dummy)
  
file_path: chainer/tests/chainer_tests/testing_tests/test_unary_math_function_test.py
imports: import unittest
  from chainer import function_node
  from chainer import testing
label_desc: Use image node_id 1 for calling the TestNoNumpyFunction obj's underlying member method code with example usage: obj.test_no_numpy_function() without return types