chore(pr): add unit tests

[tsutsu3]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 92.68293% with 6 lines in your changes missing coverage. Please review.

Project coverage is 29.80%. Comparing base (556b68a) to head (032fb97).
Report is 4 commits behind head on main.

Files with missing lines	Patch %	Lines
lib/gateways/v5/api_gateway_v5.dart	90.69%	4 Missing ⚠️
lib/gateways/v6/api_gateway_v6.dart	94.59%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #79      +/-   ##
==========================================
+ Coverage   21.87%   29.80%   +7.93%     
==========================================
  Files         136      136              
  Lines        8491     8483       -8     
==========================================
+ Hits         1857     2528     +671     
+ Misses       6634     5955     -679     

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
92.7% Coverage on New Code
0.2% Duplication on New Code

See analysis details on SonarQube Cloud