test: add test case for DataEventCollector

[tangcent]

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[codecov-commenter]

Codecov Report

Merging #719 (d6ba17b) into master (749a074) will increase coverage by 0.168%.
The diff coverage is n/a.

@@               Coverage Diff               @@
##              master      #719       +/-   ##
===============================================
+ Coverage     59.706%   59.874%   +0.168%     
- Complexity      2182      2190        +8     
===============================================
  Files            250       250               
  Lines          11277     11277               
  Branches        2653      2653               
===============================================
+ Hits            6733      6752       +19     
+ Misses          3263      3244       -19     
  Partials        1281      1281               

Flag	Coverage Δ
unittests	59.874% <ø> (+0.168%)	⬆️

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Impacted Files	Coverage Δ
...in/com/itangcent/idea/plugin/DataEventCollector.kt	100.000% <0.000%> (+100.000%)	⬆️

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