Test Strategy

Test Pyramid Ratio Guidance

        /\
       /e2e\         ~10% — critical user flows only
      /------\
     /  integ  \     ~20% — API contracts, DB interactions
    /------------\
   /    unit      \  ~70% — pure logic, transformations, edge cases
  /--------------\

Keep the pyramid right-side-up. Inverting it (too many e2e) leads to slow, flaky CI.

Decision Matrix: Task Type → Test Type