# Task Dependencies

## Dependency Graph

### Step 6 — Implement Tests (AZ-285..AZ-290)

| Task | Depends On | Points | Status |
|------|-----------|--------|--------|
| AZ-285 Test Infrastructure | — | 3 | Done |
| AZ-286 TileService Tests | AZ-285 | 3 | Done |
| AZ-287 RegionService Tests | AZ-285 | 3 | Done |
| AZ-288 RouteService Tests | AZ-285 | 3 | Done |
| AZ-289 Integration Route Maps | AZ-285 | 2 | Done |
| AZ-290 Non-Functional Tests | AZ-285 | 3 | Done |

### Step 8 — Refactor 02-coupling-refactoring (AZ-309 epic)

| Task | Depends On | Points | Status |
|------|-----------|--------|--------|
| AZ-310 ServeTile via ITileService | — | 3 | To Do |
| AZ-311 GetTileByLatLon via ITileService | AZ-310 | 2 | To Do |
| AZ-312 Split Services into 3 csprojs | AZ-311 | 5 | To Do |
| AZ-313 Update consumers (Api/Tests) | AZ-312 | 3 | To Do |
| AZ-314 DI registration split | AZ-313 | 2 | To Do |
| AZ-315 Documentation sync | AZ-314 | 2 | To Do |

## Execution Order

### Step 6
1. AZ-285 (test infrastructure — all others depend on this)
2. AZ-286, AZ-287, AZ-288 (unit tests — can run in parallel)
3. AZ-289 (integration tests — depends on infra only)
4. AZ-290 (non-functional tests — depends on infra only)

### Step 8 (refactor)
1. AZ-310 → AZ-311 (Phase A: route tile endpoints through ITileService)
2. AZ-312 → AZ-313 → AZ-314 (Phase B: physical split + consumer + DI rewire)
3. AZ-315 (Phase C: docs sync, must be last)

## Total Effort

Step 6: 6 tasks, 17 story points
Step 8 (refactor): 6 tasks, 17 story points

## Coverage Verification

| Test Spec Category | Covered By |
|-------------------|------------|
| blackbox-tests.md (BT-01..BT-12, BT-N01..BT-N05) | AZ-286, AZ-287, AZ-288, AZ-289 |
| performance-tests.md (PT-01..PT-06) | AZ-290 |
| resilience-tests.md (RS-01..RS-06) | AZ-290 |
| security-tests.md (SEC-01..SEC-04) | AZ-290 |
| resource-limit-tests.md (RL-01..RL-04) | AZ-290 |
| traceability-matrix.md (100% AC coverage) | All tasks combined |