How do I test a Mongoose schema?
Write tests that try to save invalid data. Confirm validation rejects bad data. Confirm unique indexes reject duplicates. Confirm hooks run (e.g., password gets hashed on save). Tests catch schema bugs early.
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More FAQs in MongoDB Schema Design Roadmap: From Idea to Production
List entities, list fields, pick types, add validation, add defaults, decide ref vs embed, add indexes, add timestamps, mark sensitive fields, write the schema file, add hooks, test, use in routes, and monitor in production.
After listing fields and types, before adding indexes. For each relationship, decide: ref for large N (messages, connections), embed for small tightly coupled data (an address in a user). This decision is hard to change later.
After entities, fields, types, validation, defaults, and ref vs embed. Index the queries you actually run. Use explain() to verify. Add more indexes as the data grows and query patterns emerge in production.
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