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[zhyliaieva]

qa_restore-names

[mateacademy-ai-mentor]

Review Summary

Your test file successfully implements all the required test cases for the restoreNames function. The tests properly validate: (1) restoring firstName from fullName when it's undefined, (2) restoring firstName when the property is entirely missing, (3) preserving existing firstName values, (4) handling multiple users with mixed scenarios, and (5) confirming the function returns undefined. The file follows Jest conventions with describe/it blocks and appropriate expect assertions, and correctly imports from ./restoreNames as specified. Great work on covering all edge cases in your test suite!

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