test: convert forEach to for in test-constant.js file

[Nixxy25]

for...of is preferred over Array.prototype.forEach in the test suite:
clearer stack traces on failure, works with await, and avoids
allocating a callback per iteration.

RenderATL NodeJS Workshop

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/75827/

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.32%. Comparing base (f914e45) to head (e0ace21).
⚠️ Report is 31 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #65271      +/-   ##
==========================================
- Coverage   92.07%   90.32%   -1.76%     
==========================================
  Files         399      751     +352     
  Lines      177007   250000   +72993     
  Branches    27381    47224   +19843     
==========================================
+ Hits       162978   225810   +62832     
- Misses      13716    15573    +1857     
- Partials      313     8617    +8304     

see 489 files with indirect coverage changes

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[nodejs-github-bot]

Commit Queue failed

- Loading data for nodejs/node/pull/65271
✔  Done loading data for nodejs/node/pull/65271
----------------------------------- PR info ------------------------------------
Title      test: convert forEach to for in test-constant.js file (#65271)
   ⚠  Could not retrieve the email or name of the PR author's from user's GitHub profile!
Branch     Nixxy25:my-first-contribution -> nodejs:main
Labels     test, code-and-learn, author ready, needs-ci, commit-queue
Commits    1
 - feat: convert forEach to for in test-constant.js file
Committers 1
 - NIxxy25 <tellaoyinkansola25@gmail.com>
PR-URL: https://github.com/nodejs/node/pull/65271
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Aviv Keller <me@aviv.sh>
------------------------------ Generated metadata ------------------------------
PR-URL: https://github.com/nodejs/node/pull/65271
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Aviv Keller <me@aviv.sh>
--------------------------------------------------------------------------------
   ℹ  This PR was created on Thu, 13 Aug 2026 20:05:32 GMT
   ✔  Approvals: 2
   ✔  - James M Snell (@jasnell) (TSC): https://github.com/nodejs/node/pull/65271#pullrequestreview-4932942643
   ✔  - Aviv Keller (@avivkeller): https://github.com/nodejs/node/pull/65271#pullrequestreview-4934054787
   ✘  2 GitHub CI job(s) failed:
   ✘    - lint-commit-message: FAILURE (https://github.com/nodejs/node/actions/runs/31767740201/job/95027864465)
   ✘    - x86_64-darwin: with shared libraries / build: FAILURE (https://github.com/nodejs/node/actions/runs/31767740332/job/95028005259)
   ℹ  Last Full PR CI on 2026-08-14T02:32:58Z: https://ci.nodejs.org/job/node-test-pull-request/75827/
   ⚠  Commits were pushed after the last Full PR CI run:
   ⚠  - feat: convert forEach to for in test-constant.js file
- Querying data for job/node-test-pull-request/75827/
✔  Build data downloaded
- Querying failures of job/node-test-commit/90548/
✔  Data downloaded
   ✘  1 failure(s) on the last Jenkins CI run
--------------------------------------------------------------------------------
   ✔  Aborted `git node land` session in /home/runner/work/node/node/.ncu

https://github.com/nodejs/node/actions/runs/31905918893

[jasnell]

Note to whomever lands this: the commit message prefix will need to be manually fixed up to fix the linting.

[avivkeller]

Landed in 30bff4a

[avivkeller]

I've landed it with an amended commit message (the only failure was linting the commit message prior to my amendment, skipped)