Add TestFramework and fix Addressables in Unity.gitignore

[mikerochip]

Reasons for making this change

This was originally a 3+ year old PR that I'd accidentally closed while trying to update.

• Add more complete Addressables ignores (e.g. ServerData, link.xml)
• Fix incorrect comment about Android Assets (aa refers to Addressable Assets)
• Add auto-generated InitTestScene* files from Unity's Test Framework

Links to documentation supporting these rule changes

Official Unity packages do not perfectly document their ignorable files, unfortunately.

• Addressables artifacts: doc link
• Test Framework InitTestScene* artifacts: forum link

Merge and Approval Steps

• [x] Confirm that you've read the contribution guidelines and ensured your PR aligns
• [x] Ensure CI is passing
• [ ] Get a review and Approval from one of the maintainers

[wirecat]

@mikerochip Would you be open to splitting up changes and please provide official doc links for changes? It's difficult to review and accept changes otherwise.

[mikerochip]

@mikerochip Would you be open to splitting up changes and please provide official doc links for changes? It's difficult to review and accept changes otherwise.

@wirecat Totally fine with splitting up changes, however I can't provide official doc links if there are none in certain cases. A lot of Unity is like that.

How about I make these changes?

• Reduce this PR to just Test Framework and Addressables
• Remove the OS stuff, VS Code, Rider stuff, mono_crash*

Sound reasonable?

[mikerochip]

@wirecat I just made the above changes. Hopefully the PR looks cleaner now.

[mikerochip]

Simplified Rider and moved to https://github.com/github/gitignore/pull/4668 since apparently they have been embedding .gitignore files inside the .idea folders for some time now according to this comment. There is an epic StackOverflow thread about how this has changed over time https://stackoverflow.com/questions/11968531/what-to-gitignore-from-the-idea-folder

[COMPUTEX2025]

في السبت، ٢١ يونيو ٢٠٢٥، ١٢:٣٥ ص Daniel Johnson @.***> كتب:

@.**** commented on this pull request.

In Unity.gitignore https://github.com/github/gitignore/pull/4662#discussion_r2159689168:

/[Aa]ssets/Plugins/Editor/JetBrains* +.idea/

Thank you for that!

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