Tests FHIRResource and its extensions

[jdisho]

Write tests for FHIRResource and its extensions.

♻️ Current situation & Problem

The FHIRResource class and its extensions currently have 0% test coverage. We should increase the code coverage as much as possible, to ensure long-term maintainability.

⚙️ Release Notes

• This PR doesn't change any features. It adds tests for the FHIRResource, FHIRResource+Search, and ResourceProxy+DisplayName.
• For the FHIRResource+Category tests, it's best to wait until PR FHIRStore actor isolation #26 is merged into the main branch, avoiding any potential conflicts or inconsistencies.

📚 Documentation

Comments are added throughout the code.

✅ Testing

Aim for >90% code coverage, but >80% is acceptable in this case.

📝 Code of Conduct & Contributing Guidelines

By submitting creating this pull request, you agree to follow our Code of Conduct and Contributing Guidelines:

• I agree to follow the Code of Conduct and Contributing Guidelines.

[PSchmiedmayer]

Amazing; thank you for all the additional tests and extensions, amazing @jdisho! 🚀

Would be amazing to resolve some of the current failing CI builds and get this merged to get closer to #27, thank you for looking into this! 👍

[jdisho]

I was waiting for #26 to be merged so I could test FHIRResource+Category. On it right now.

[philippzagar]

Thanks @jdisho for the extensive tests, they were quite tedious to write for sure but it helps us to push the test coverage! 🚀

Had some minor comments, mostly regarding formatting and styling. Please resolve all outstanding Linter warnings and compile errors, then we should be good to merge!

[jdisho]

Thanks for the feedback @philippzagar ✨
I've just committed the missing tests. I'll review your comments in detail a bit later and make the PR ready.

[PSchmiedmayer]

Thank you @jdisho & @philippzagar!

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 54.67%. Comparing base (aa1f1b5) to head (9e470ca).
Report is 1 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff             @@
##             main      #28       +/-   ##
===========================================
+ Coverage   34.97%   54.67%   +19.71%     
===========================================
  Files          21       21               
  Lines        1467     1467               
===========================================
+ Hits          513      802      +289     
+ Misses        954      665      -289     

see 11 files with indirect coverage changes

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[jdisho]

This is ready but let me know if there is anything else.

[jdisho]

@philippzagar - Any new input from your side or should I merge it?

[philippzagar]

Looks good to me, thanks @jdisho! 🚀
At some point soon, we'll lift all of our Spezi modules to swift-testing, we'll then also do it for this code!

[philippzagar]

@jdisho One more thing, please ensure that all commits on the respective branch are properly signed. The later commits on here are signed, however, the first ones are not.
For now, I'll bypass this requirement via my admin rights and merge the PR!

[jdisho]

Thank you 🫶 @philippzagar