test: add more unittest, coverage up to 96%

[lihuacai168]

No description provided.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.63%. Comparing base (979f286) to head (adda0a0).
Report is 2 commits behind head on main.

❗ Your organization needs to install the Codecov GitHub app to enable full functionality.

Additional details and impacted files

@@             Coverage Diff             @@
##             main      #12       +/-   ##
===========================================
+ Coverage   77.51%   95.63%   +18.11%     
===========================================
  Files          32       20       -12     
  Lines         596      458      -138     
===========================================
- Hits          462      438       -24     
+ Misses        134       20      -114     

Flag	Coverage Δ
unittests	95.63% <100.00%> (+18.11%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.