docstr: Test positional_args_names
docstr_tok: ["Test","positional_args_names"]
code: def test_positional_args_names(self):
      """Test positional_args_names"""
  
      def f1(a, b, c, d=1, *, e=2, f=3, **kwargs):
          pass
  
      def f2(a, b, c, *args, e=2, f=3, **kwargs):
          pass
  
      self.assertEqual(
          objax.util.positional_args_names(f1), ["a", "b", "c", "d"]
      )
      self.assertEqual(
          objax.util.positional_args_names(f2), ["a", "b", "c"]
      )
  
file_path: objax/tests/util.py
imports: import re
  import unittest
  import objax
label_desc: Use image node_id 6 for calling the TestUtil obj's underlying member method code with example usage: obj.test_positional_args_names() without return types