Fix add group to have correct parent set

[avdyushin]

Resolves #613

Short description 📝

Fixed addGroup method and added unit test for this case

Solution 📦

Typo?

Implementation 👩‍💻👨‍💻

newGroup.parent = group instead of self

[codecov-commenter]

Codecov Report

Merging #614 (cccf94f) into main (45e349e) will increase coverage by 0.02%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #614      +/-   ##
==========================================
+ Coverage   84.14%   84.17%   +0.02%     
==========================================
  Files         154      154              
  Lines        8706     8718      +12     
==========================================
+ Hits         7326     7338      +12     
  Misses       1380     1380              

Impacted Files	Coverage Δ
Sources/XcodeProj/Objects/Files/PBXGroup.swift	78.84% <100.00%> (ø)
...s/XcodeProjTests/Objects/Files/PBXGroupTests.swift	93.75% <100.00%> (+0.50%)	⬆️

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[avdyushin]

How it's possible to trigger CI build for this PR again?

[kwridan]

Thanks for fixing this @avdyushin.

Mind rebasing on latest main where some fixes for linux have already landed, this may help resolve the CI issue you saw?

lastly, please update CHANGELOG.md to help raise awareness of this fix in the next release.

[fortmarek]

Thanks for the contribution!