Improve test stability by getting independent of module id ordering in more places

[lukastaegert]

This PR contains:

• bugfix
• feature
• refactor
• documentation
• other

Are tests included?

• yes (bugfixes and features will not be merged without tests)
• no

Breaking Changes?

• yes (breaking changes will not be merged unless absolutely necessary)
• no

List any relevant issue numbers:

Description

There were still some cases where module ids in tests were not properly ordered. This fixes this by using objects instead of arrays in some places, which also improves readability.

[github-actions]

Thank you for your contribution! ❤️

You can try out this pull request locally by installing Rollup via

npm install rollup/rollup#order-test-module-ids

or load it into the REPL:
https://rollupjs.org/repl/?pr=4401

[codecov]

Codecov Report

Merging #4401 (de249ef) into master (f715e3c) will not change coverage.
The diff coverage is n/a.

❗ Current head de249ef differs from pull request most recent head a0ee040. Consider uploading reports for the commit a0ee040 to get more accurate results

@@           Coverage Diff           @@
##           master    #4401   +/-   ##
=======================================
  Coverage   98.73%   98.73%           
=======================================
  Files         204      204           
  Lines        7325     7325           
  Branches     2081     2081           
=======================================
  Hits         7232     7232           
  Misses         34       34           
  Partials       59       59           

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[dnalborczyk]

this might be another one: https://github.com/rollup/rollup/runs/5100138440?check_suite_focus=true and https://github.com/rollup/rollup/runs/5175913012?check_suite_focus=true if not yet fixed.

[dnalborczyk]

@lukastaegert are there (a lot?) of tests left needing to be fixed? anything I can help with?

[lukastaegert]

this might be another on

These are the reason I did this 😉

@lukastaegert are there (a lot?) of tests left needing to be fixed?

I hope not, but no way to be sure

[dnalborczyk]

this might be another on

These are the reason I did this 😉

@lukastaegert are there (a lot?) of tests left needing to be fixed?

I hope not, but no way to be sure

ah, sweet!! 👍