test: improve concurrent id

[JacksonTian]

You need to complete

• unit tests and/or feature tests
• documentation is changed or added

[codecov]

Codecov Report

Merging #508 (68ab744) into master (154fac8) will not change coverage.
The diff coverage is n/a.

❗ Current head 68ab744 differs from pull request most recent head d04629c. Consider uploading reports for the commit d04629c to get more accurate results

@@           Coverage Diff           @@
##           master     #508   +/-   ##
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  Coverage   95.92%   95.92%           
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  Files          45       45           
  Lines        1916     1916           
  Branches      276      276           
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  Hits         1838     1838           
  Misses         56       56           
  Partials       22       22