2.6Mapping Your Current Test Suite to the Pyramid

Step 1: Inventory Your Tests

Categorize every test in your suite:

Test Inventory -- ShopFlow Project
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

Unit tests:          412  (68%)  │████████████████████  │
Integration tests:    89  (15%)  │████                  │
E2E tests:           104  (17%)  │█████                 │
                    ─────
Total:               605

Execution time:
  Unit:          42 seconds
  Integration:   3 minutes 18 seconds
  E2E:          28 minutes 45 seconds
  Total:        32 minutes 45 seconds

E2E tests are 17% of the count but 88% of the execution time.

Step 2: Identify the Shape

Based on the inventory above, this team has a reasonable pyramid shape with a slightly heavy E2E layer. The key question is: are those 104 E2E tests all necessary, or are some testing things that could be covered at a lower level?

Step 3: Analyze the Gaps

Area	Unit Coverage	Integration Coverage	E2E Coverage	Gap
Payment logic	95%	80%	100%	None -- well covered
User auth	70%	40%	100%	Integration gap: auth + session
Search	90%	20%	60%	Integration gap: search + database
Admin tools	30%	10%	80%	Heavy E2E reliance, few unit tests

Step 4: Make Recommendations

Based on this analysis:

1. Admin tools: Push test coverage down. Write unit tests for admin business logic. This is currently an ice cream cone for this feature area.
2. User auth: Add integration tests for the auth-session boundary. The E2E tests cover it but cannot pinpoint failures.
3. Search: Add integration tests for the search-database interaction. The 20% integration coverage is dangerously low for a high-traffic feature.