code: def test_float8e4m3_to_float32_round(self, val, expected):
      f8 = helper.float32_to_float8e4m3(val)
      f32 = numpy_helper.float8e4m3_to_float32(f8)
      self.assertEqual(f32, expected)
  
imports: import unittest
  from typing import Any
  import numpy
  import parameterized
  import onnx
  from onnx import helper, numpy_helper
label_desc: Use image node_id 17 for calling the TestNumpyHelper obj's underlying member method code with example usage: obj.test_float8e4m3_to_float32_round(val, expected) without return types