Maybe use pglite (which wraps postgres-wasm)? Readme indicates it can run in-memory. Doesn't solve your testing-data question, but it'll save you from spinning

Maybe use pglite (which wraps postgres-wasm)? Readme indicates it can run in-memory. Doesn't solve your testing-data question, but it'll save you from spinning up a new DB. https://github.com/electric-sql/pglite/ https://github.com/electric-sql/pglite/ https://github.com/electric-sql/postgres-wasm https://github.com/electric-sql/postgres-wasm