Increase config.rs coverage

[CAGS295]

Summary of Changes

Line coverage diff:
3.92% (4/102) -> 46.00% (46/100)

Testing

Risks

How were these changes tested?

What future testing should occur?

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

[codecov]

Codecov Report

Attention: 3 lines in your changes are missing coverage. Please review.

Comparison is base (f3606db) 43.71% compared to head (adf3389) 44.31%.
Report is 5 commits behind head on main.

Files	Patch %	Lines
romeo/src/stacks_client.rs	0.00%	2 Missing ⚠️
romeo/src/main.rs	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #329      +/-   ##
==========================================
+ Coverage   43.71%   44.31%   +0.60%     
==========================================
  Files          45       45              
  Lines        5433     5465      +32     
  Branches       47       47              
==========================================
+ Hits         2375     2422      +47     
+ Misses       3057     3042      -15     
  Partials        1        1              

Flag	Coverage Δ
unittests	76.61% <ø> (ø)

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[CLAassistant]

All committers have signed the CLA.