test: deflake test-runner-watch-mode-kill-signal

[dario-piotrowicz]

While trying to deflake the tests I've refactored making them much clearer and more performant (since there are no longer setTimeout calls), as far as I can tell the flake is also gone 🙂

Results:

• https://ci.nodejs.org/job/node-stress-single-test/586
• https://ci.nodejs.org/job/node-stress-single-test/587

Ref: nodejs/reliability#1250

[nodejs-github-bot]

Review requested:

• @nodejs/test_runner

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/67828/

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.06%. Comparing base (aad9030) to head (971a1ac).
Report is 26 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #58952      +/-   ##
==========================================
+ Coverage   89.96%   90.06%   +0.09%     
==========================================
  Files         640      640              
  Lines      188454   188471      +17     
  Branches    36892    36979      +87     
==========================================
+ Hits       169546   169739     +193     
+ Misses      11608    11430     -178     
- Partials     7300     7302       +2     

see 61 files with indirect coverage changes

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[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/67877/

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/67879/

[nodejs-github-bot]

Landed in 35c85a2