Test for IteratePortConnection

[DongLieu]

1. Summary

Fixes #617

2.Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

3. Implementation details

4. How to test/use

5. Checklist

• Does the Readme need to be updated?

6. Limitations (optional)

7. Future Work (optional)

[codecov]

Codecov Report

Merging #686 (b87ba79) into main (3ac2700) will increase coverage by 0.02%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main     #686      +/-   ##
==========================================
+ Coverage   13.35%   13.37%   +0.02%     
==========================================
  Files         243      243              
  Lines       62951    62951              
==========================================
+ Hits         8406     8421      +15     
+ Misses      53873    53857      -16     
- Partials      672      673       +1     

Flag	Coverage Δ
unittests	13.37% <ø> (+0.02%)	⬆️

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see 1 file with indirect coverage changes