F fix empty diff

Summary

In the course of https://gitlab.indiscale.com/caosdb/customers/leibniz-zmt/management/-/issues/129, an error in the empty_diff function occurred when comparing entities with different ids.

Focus

apiutils.empty_diff now handles special attributes separately.

Test Environment

Unittest should be sufficient. To reproduce previous behavior for manual testing, install pylib in dev and execute

pytest -vvv unittests/test_apiutils.py::test_empty_diff

with the unit test from this branch.

Check List for the Author

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• All automated tests pass
• Reference related issues
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  • Problems with old code
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Check List for the Reviewer

• I understand the intent of this MR
• All automated tests pass
• Up-to-date CHANGELOG.md (or not necessary)
• The test environment setup works and the intended behavior is reproducible in the test environment
• In-code documentation and comments are up-to-date.
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For further good practices have a look at our review guidelines.

assigned to @florian

marked the checklist item Reference related issues as completed

marked the checklist item Up-to-date CHANGELOG.md (or not necessary) as completed

marked the checklist item Annotations in code (Gitlab comments) as completed

requested review from @henrik

marked the checklist item I understand the intent of this MR as completed

marked the checklist item All automated tests pass as completed

marked the checklist item Up-to-date CHANGELOG.md (or not necessary) as completed

marked the checklist item The test environment setup works and the intended behavior is reproducible in the test as completed

marked the checklist item Check: Are there specifications? Are they satisfied? as completed

marked the checklist item In-code documentation and comments are up-to-date. as completed

mentioned in commit 3566b6b5

merged