improve test cases

[yndu13]

No description provided.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 79.61%. Comparing base (1d2aff9) to head (802cfb7).
Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #166      +/-   ##
==========================================
+ Coverage   79.51%   79.61%   +0.09%     
==========================================
  Files           5        5              
  Lines        3159     3159              
  Branches      114      114              
==========================================
+ Hits         2512     2515       +3     
+ Misses        555      552       -3     
  Partials       92       92              

Flag	Coverage Δ
golang	72.50% <ø> (ø)
python	82.60% <ø> (ø)
typescript	89.18% <ø> (+0.57%)	⬆️

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