test: add unit test for explorer and searchPanel

[mortalYoung]

简介

• Explorer 新增测试用例
• SearchPanel 新增测试用例
• SearchTree 新增测试用例
• 优化 SearchPanel 的方法，支持可选

[codecov]

Codecov Report

Merging #393 (9f79744) into main (3066baa) will increase coverage by 0.60%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #393      +/-   ##
==========================================
+ Coverage   76.72%   77.32%   +0.60%     
==========================================
  Files         176      176              
  Lines        4808     4808              
  Branches     1039     1040       +1     
==========================================
+ Hits         3689     3718      +29     
+ Misses       1111     1083      -28     
+ Partials        8        7       -1     

Impacted Files	Coverage Δ
src/controller/search/search.tsx	28.08% <ø> (ø)
src/workbench/sidebar/explore/explore.tsx	80.00% <100.00%> (ø)
src/workbench/sidebar/search/searchPanel.tsx	95.12% <100.00%> (+65.85%)	⬆️
src/components/actionBar/index.tsx	97.43% <0.00%> (+2.56%)	⬆️
src/components/search/index.tsx	94.73% <0.00%> (+2.63%)	⬆️

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[wewoor]

+1