go-testing

To mock sqlc database queries for Go backend unit testing, implement mock interfaces that isolate service components. This approach allows testing individual layers in isolation without hitting a real database, ensuring fast and reliable execution.

Testcontainers-go works for Go integration testing by spinning up real PostgreSQL instances in Docker containers during test execution. This provides an isolated, end-to-end environment to validate integrated components against actual database behavior.

The best way to test HTTP handlers in Go is using the net/http/httptest package. It simulates HTTP requests and records responses, enabling precise endpoint testing without requiring a live server.

You need table-driven tests for Go backend services to efficiently validate multiple input scenarios. They organize test cases into structs, reducing code duplication and making coverage of edge cases easier to maintain.

Use testcontainers-go instead of mocking for Go tests when validating actual database interactions. Mocking isolates components for fast unit tests, while testcontainers-go provides realistic integration testing with real PostgreSQL instances.