v1.15.9

Fix: SDD TDD Agent — Mock Hygiene, Smoke Test Ban, Implementation Detail Coupling

Validated v1.15.8 rules against real deleted tests from prowler-cloud/prowler and found 3 gaps. Now closed.

New Rules (apply + verify)

Mock Hygiene

• Mock/assertion ratio guide: ≤3 mocks ✅, 4-6 ⚠️ consider extraction, 7+ ❌ wrong layer
• Extract-Before-Mock Rule: if the logic is a data transformation, extract to a pure function and test directly — zero mocks needed
• Example: 15 vi.mock() calls to test MUTED → FAIL conversion → extract to resolveDisplayStatus() and test with 0 mocks

Smoke Test Ban

• render() + toBeInTheDocument() without behavioral assertions is NOT a valid test
• "Renders without crash" does not count toward TDD coverage
• Must assert WHAT was rendered (text, values, states derived from data)

Implementation Detail Coupling Ban

• CSS class assertions (expect(el.className).toContain("text-xs")) are NEVER valid
• Internal state assertions (component.state.isLoading) are banned
• Mock call count assertions (mock.calls.length === 3) are brittle coupling
• Tests must assert user-visible behavior: text content, roles, disabled state

Coverage Matrix (all 7 problems now covered)

Problem	Status
Smoke test only	✅ Smoke Test Rule
Mock/assertion ratio 12:1	✅ Mock Hygiene Rules
Assertions negativas sin positivas	✅ Triangulation (v1.15.8)
Ghost loops	✅ Banned Patterns (v1.15.8)
CSS implementation detail coupling	✅ Implementation Detail Rule
Extract to pure function	✅ Extract-Before-Mock
Suggest E2E for complex flows	✅ Choosing Test Layer (existing)