solution

[Tysiachnyk]

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[mateacademy-ai-mentor]

Review Summary

I am requesting changes because there is a requirements mismatch that will cause tests to fail. Specifically, for validation errors your 400 responses currently set res.statusMessage = 'Bad Request', but the specification requires the status text to be exactly "Bad request" (lowercase r), and tests are checking this string. To fix this, update the 400 error handling branch in src/createServer.js (where you set statusCode = 400) so that res.statusMessage is set to "Bad request" instead of "Bad Request". This is a critical, blocking issue because even though your validation logic, JSON structure, and success responses are all correct, the incorrect status text will cause the required test suite to fail. Everything else in your implementation—URL parsing, use of URLSearchParams, validation of text and toCase, and calling convertToCase with the right parameters—looks solid and aligned with the task. Once you adjust that status message string, your solution should fully meet the spec and behave correctly for the tests.

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[mateacademy-ai-mentor]

For validation errors the requirements specify the status text must be exactly "Bad request" (lowercase r), but here you set 'Bad Request'. Update this string to match the spec so tests relying on the exact status text will pass.

[mateacademy-ai-mentor]

Review Summary

Your solution is approved because it meets all the core functional and technical requirements for the server implementation. The createServer function is correctly exported, uses http.createServer, and focuses solely on the text case conversion endpoint. You parse the URL and query string properly, validate both the path text and the toCase parameter, and handle unsupported case values with the exact required error messages and a 400 Bad request status. On valid input, you call convertToCase with the correct arguments and return a 200 OK JSON response that includes originalCase, targetCase, originalText, and convertedText in the expected shape. The always-JSON responses with the correct Content-Type header and the additional 500 error handling branch are sensible and do not conflict with any requirements. Overall, the behavior aligns with the task description and should allow all tests to pass as written. Nice work implementing the server cleanly and adhering closely to the specification.

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