extend code coverage

[xadupre]

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[codecov-commenter]

Codecov Report

Attention: Patch coverage is 85.18519% with 8 lines in your changes missing coverage. Please review.

Project coverage is 49.03%. Comparing base (69acc8d) to head (e4e7cab).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
onnx_diagnostic/helpers.py	85.18%	8 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##             main       #2       +/-   ##
===========================================
+ Coverage   24.60%   49.03%   +24.43%     
===========================================
  Files           8        8               
  Lines        1979     2029       +50     
===========================================
+ Hits          487      995      +508     
+ Misses       1492     1034      -458     

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