testing

Set up in-memory Postgres using PGlite and ClickHouse using chdb to achieve deterministic integration testing. This approach provides fast, isolated database environments for Node-based services without requiring external database connections.

Use unit tests for isolated logic and integration tests when verifying database interactions. Clear test categorization guidelines and naming conventions help standardize testing practices, ensuring you apply the correct test type at the right stage.

Export test helpers via a dedicated /testing path to prevent leaking test code into production. This strategy ensures safe, isolated test utilities are available as production-ready exports without bloating the main application bundle.

Standardize testing practices by codifying test types and environment setups. Establish clear guidelines for unit, integration, and end-to-end tests, along with naming conventions, to ensure consistent and reliable software testing.

Yes, vitest works with in-memory databases. You can leverage PGlite for Postgres and chdb for ClickHouse within your vitest test suites to achieve fast, deterministic integration test results in Node-based environments.

Integration tests fail due to external database state and network latency. Using in-memory databases like PGlite and chdb eliminates these dependencies, providing deterministic results and isolating test environments from external factors.