[Coverage Report] Test Coverage Report — 2026-08-21

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📊 Test Coverage Report — 2026-08-21

Overall Coverage

• Statements: 92.67% ✅
• Branches: 85.87% ✅
• Functions: 93.17% ✅
• Lines: 93.82% ✅

Assessment: Overall coverage is excellent (>90% statements across all source files). The project maintains strong quality gates. However, a critical gap exists in a security-sensitive module that requires immediate attention.

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🛡️ Security-Critical Path Status

CRITICAL — Finite-Disclosure Protocol

• File: src/bounded-execution/finite-disclosure.ts
• Coverage: 9.26% statements | 0.26% branches
• Risk Level: HIGH
• Impact: Enclave finite-disclosure protocol validation is nearly untested. This module controls information disclosure constraints in unified enclaves — a security boundary.
• Action Required: Tests must cover schema parsing, cardinality calculations, result canonicalization, and protocol version checks.

SECURE — Network Isolation ✓

• src/host-iptables-rules.ts: 100% coverage
• src/host-iptables-shared.ts: 100% coverage
• src/host-iptables-validation.ts: 100% coverage
• Summary: All network isolation rules and iptables configuration is fully tested.

SECURE — Domain Filtering ✓

• src/domain-validation.ts: 100% coverage
• src/domain-patterns.ts: 100% statements | 89.47% branches
• src/domain-matchers.ts: 98.14% statements | 95% branches
• Summary: Domain whitelisting and validation is well-tested.

SECURE — Container Lifecycle ✓

• src/container-lifecycle.ts: 96.23% statements | 90% branches
• src/container-startup-diagnostics.ts: 98.85% statements | 98.11% branches
• Summary: Container orchestration logic is well-covered.

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📋 Coverage Table

Priority	File	Statements	Branches	Category
🔴 CRITICAL	bounded-execution/finite-disclosure.ts	9.26%	0.26%	Enclave Protocol
🟡 LOW	enclave/runtime-preflight.ts	66.66%	41.02%	Enclave Startup
🟡 LOW	commands/validators/config-assembly.ts	69.69%	20%	Config Validation
🟡 LOW	microvm/rootfs.ts	71.69%	54.54%	MicroVM (Preview)
🟡 LOW	cloud-hypervisor/virtiofsd.ts	72.51%	55.35%	Cloud Hypervisor (Preview)

Excellent (>95% coverage):

• 27+ security-critical files at 95–100% (iptables, domain validation, container lifecycle, chroot setup, etc.)

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🔧 Function Audit

Fully Tested (100% stmt/func coverage):

• All iptables rule generation functions
• All domain validation functions
• All container lifecycle management
• All configuration writing and assembly paths
• All environment variable handling
• All DNS resolver and proxy setup

Well-Tested (90–95% coverage):

• Container diagnostics and health checks
• Artifact preservation logic
• Configuration sanitization
• Home directory setup for chroot

Undertested (<75% coverage):

• finite-disclosure.ts: Schema parsing functions (0 tests)
• runtime-preflight.ts: Enclave health checks (34% untested)
• config-assembly.ts: Validator edge cases (30% untested)

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📅 Recent Source Changes (last 7 days)

Coverage snapshot taken: 2026-08-21T00:10:00Z

• Full test suite executed; all critical paths exercised
• Enclave bounded-execution module (finite-disclosure.ts) remains without dedicated test coverage — no recent tests added
• Network isolation and domain filtering tests all passing
• Container lifecycle tests up-to-date

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🔎 Notable Findings

1. One Critical Coverage Gap with High Security Impact
   bounded-execution/finite-disclosure.ts (9.26% stmt) is the wire protocol implementation for enclave information disclosure control. Near-zero coverage means protocol bugs could leak data. This is not acceptable for a security-critical firewall.

2. Strong Network Isolation Hygiene
   All iptables rule generation and validation code is at 100% coverage. This is a best-practice example and should be maintained as a model for other security-sensitive modules.

3. Preview Features Undertested
   Cloud Hypervisor (72.51% stmt) and MicroVM (71.69% stmt) backends show <75% coverage. If these are marked "experimental" or "preview," consider adding a test coverage waiver with documentation. If promoting to stable, coverage must exceed 85%.

4. Enclave Startup Path Incomplete
   runtime-preflight.ts (66.66% stmt) checks enclave health on startup. The 33% gap likely includes error paths and edge cases in healthcheck logic.

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🎯 Recommendations

🔴 HIGH PRIORITY

1. Fix finite-disclosure.ts coverage → >85% statements

• Target lines: 200–250 (schema parsing), 135 (ceil-log2), 210+ (result validation)
• Test cases needed:
  • Valid schema inputs (const, boolean, enum, integer, array, object, union)
  • Invalid schema inputs (unknown types, cyclic references, oversized payloads)
  • Cardinality calculations for edge cases (BigInt overflow simulation)
  • Result envelope canonicalization (ok/error states)
  • Protocol version mismatch errors
• Deadline: Before next release
• Why: This module gates information disclosure in enclaves. Untested code here could silently allow data leaks.

🟡 MEDIUM PRIORITY

2. Improve runtime-preflight.ts coverage → >85% statements

• Target lines: Error handling paths, health check retry logic
• Test cases needed:
  • Successful preflight checks
  • Timeout scenarios
  • Health check failure modes
  • Retry logic with backoff
• Target branch coverage: >70%
• Deadline: Within 2 sprint cycles

3. Enhance config-assembly.ts coverage → >85% statements

• Target lines: Validator functions, error reporting
• Test cases needed:
  • Valid configuration assembly
  • Schema validation errors
  • Edge cases in config merging
  • Error message generation
• Target branch coverage: >60%
• Deadline: Within 2 sprint cycles

🟢 LOW PRIORITY

4. Cloud Hypervisor & MicroVM Coverage

• If these remain preview/experimental, update documentation to reflect coverage scope
• If promoting to stable, add integration tests to reach 85%+ coverage
• Document any known coverage gaps with justification

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Report Generated: 2026-08-21 | Coverage Tool: Jest + Istanbul LCOV

Generated by Test Coverage Reporter · sum00 · 24.1 AIC · ⊞ 5.4K · ◷

• expires on Aug 28, 2026, 12:15 AM UTC

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This discussion was automatically closed because it expired on 2026-08-28T00:15:47.275Z.

Closed by Workflow