Coverage Analysis

Purpose

Analyze and measure test coverage at multiple levels (requirements, code, features) to identify gaps and ensure adequate testing before release.

When to Use

• Gate validation
• Sprint review
• Release assessment
• Quality reporting

Prerequisites

• Test cases executed
• Code coverage tools configured
• Traceability matrix available

Process

Step 1: Measure Code Coverage

Coverage metrics:
- Line coverage
- Branch coverage
- Function coverage
- Statement coverage

Step 2: Measure Requirement Coverage

Requirement coverage:
- Requirements with tests
- Requirements without tests
- Test pass rate per requirement

Step 3: Analyze Coverage Gaps

Gap identification:
- Untested code paths
- Untested requirements
- Low coverage modules
- Missing negative tests

Step 4: Assess Risk

Risk assessment:
- Critical features coverage
- Security features coverage
- High-risk changes coverage

Step 5: Generate Report

Coverage report:
- Summary metrics
- Gap details
- Risk assessment
- Recommendations

Inputs

Input	Type	Required	Description
test_results	JSON	Yes	Test execution results
coverage_data	JSON	Yes	Code coverage output
traceability_matrix	CSV	Yes	Req-to-test mapping

Outputs

Output	Type	Description
coverage_report.md	Markdown	Analysis report
coverage_gaps.json	JSON	Identified gaps
risk_assessment.md	Markdown	Risk analysis

StudyAbroad-Specific Considerations

• GDPR features must have 100% coverage
• OAuth2 flows need complete coverage
• External API integration coverage
• Application state transitions

Integration Points

• Orchestrator: Gate validation
• Developer Agent: Gap remediation
• Security Agent: Security coverage

Examples

Coverage Analysis Report - StudyAbroad-v1
Sprint 5

SUMMARY:
┌─────────────────────────────────────┐
│ Overall Code Coverage: 82%         │
│ Requirement Coverage: 95%          │
│ Critical Path Coverage: 100%       │
└─────────────────────────────────────┘

CODE COVERAGE BY MODULE:

| Module | Lines | Branches | Functions |
|--------|-------|----------|-----------|
| auth | 91% | 85% | 100% |
| user | 88% | 82% | 95% |
| application | 79% | 71% | 90% |
| university | 85% | 78% | 92% |
| document | 76% | 68% | 88% |
| gdpr | 95% | 92% | 100% |
| integration | 72% | 65% | 85% |

REQUIREMENT COVERAGE:

| Priority | Total | Covered | % |
|----------|-------|---------|---|
| Must Have | 15 | 15 | 100% |
| Should Have | 12 | 11 | 92% |
| Could Have | 8 | 5 | 63% |
| Total | 35 | 31 | 89% |

COVERAGE GAPS:

Critical Gaps (Must Fix):
- None ✓

High Priority Gaps:
1. application/submit.ts lines 45-52
   - Error handling for concurrent submissions
   - Risk: Race condition possible
   - Action: Add test TC-APP-015

2. integration/university-sync.ts lines 120-135
   - Retry logic after circuit breaker opens
   - Risk: Sync failures not tested
   - Action: Add integration test

Medium Priority Gaps:
1. document/upload.ts lines 88-95
   - Virus scan timeout handling
   - Action: Add mock timeout test

2. REQ-023 (Email notifications)
   - No test cases written
   - Action: Create TC-NOTIF-001 to TC-NOTIF-005

Low Priority Gaps:
1. user/preferences.ts
   - Dark mode toggle (cosmetic)
   - Defer to Phase 2

UNCOVERED REQUIREMENTS:

| REQ ID | Description | Priority | Action |
|--------|-------------|----------|--------|
| REQ-023 | Email notifications | Should | Create tests |
| REQ-028 | Export to PDF | Could | Defer |
| REQ-029 | Social sharing | Could | Defer |
| REQ-031 | Chat support | Could | Out of scope |

RISK ASSESSMENT:

| Area | Coverage | Risk | Mitigation |
|------|----------|------|------------|
| Authentication | 91% | Low | Acceptable |
| Application Submit | 79% | Medium | Add gap tests |
| GDPR | 95% | Low | Acceptable |
| External APIs | 72% | Medium | Add mock tests |
| Document Upload | 76% | Medium | Add edge cases |

RECOMMENDATIONS:

1. Add 3 test cases for application submission edge cases
2. Increase integration module coverage to 80%
3. Create notification test suite
4. Review document upload error scenarios

GATE-6 STATUS: ⚠️ CONDITIONAL PASS
- Code coverage: 82% ✓ (target: 80%)
- Requirement coverage: 89% ⚠️ (target: 95%)
- Critical coverage: 100% ✓
- Action: Add REQ-023 tests before release

Validation

• All coverage metrics calculated
• Gaps clearly identified
• Risks assessed
• Recommendations actionable
• Report is current