Vitest Testing Guide

Use this skill when writing tests (*.spec.ts, *.e2e-spec.ts) for NestJS + MikroORM projects.

Test Types

1. Integration Tests (*.spec.ts): Service layer, uses real DB
2. E2E Tests (*.e2e-spec.ts): Full API endpoint flow

⚠️ Do NOT write controller unit tests ⚠️ Use real DB connection instead of mocks

Service Integration Test Structure