Running a unittest file executing only the first test

[kondratyev-nv]

For #4567

• Pull request represents a single change (i.e. not fixing disparate/unrelated things in a single PR)
• Title summarizes what is changing
• Has a news entry file (remember to thank yourself!)
• Appropriate comments and documentation strings in the code
• Has sufficient logging.
• Has telemetry for enhancements.
• Unit tests & system/integration tests are added/updated
• Test plan is updated as appropriate
• package-lock.json has been regenerated by running npm install (if dependencies have changed)
• The wiki is updated with any design decisions/details.

[codecov-io]

Codecov Report

Merging #7783 into master will increase coverage by <.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master    #7783      +/-   ##
==========================================
+ Coverage   59.33%   59.33%   +<.01%     
==========================================
  Files         505      505              
  Lines       23147    23148       +1     
  Branches     3745     3745              
==========================================
+ Hits        13734    13735       +1     
  Misses       8520     8520              
  Partials      893      893

Impacted Files	Coverage Δ
.../client/testing/unittest/services/parserService.ts	95.23% <100%> (+0.11%)	⬆️

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[kondratyev-nv]

@kimadeline @ericsnowcurrently Just a kindly reminder :) Are there any chances for this PR to be reviewed?

[kimadeline]

Hi @kondratyev-nv , thank you for your PR! We'll get to it as soon as we can.

[ericsnowcurrently]

LGTM

I'm going to run a full CI pass on this PR before merging.

[ericsnowcurrently]

CI results look fine.