[Coverage Report] Test Coverage Report — 2026-08-28

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📊 Test Coverage Report — 2026-08-28

Overall Coverage

Metric	Coverage	Status
Statements	92.67%	✅ Excellent
Branches	86.07%	✅ Strong
Functions	93.19%	✅ Excellent
Lines	93.85%	✅ Excellent

Summary: Project-wide test coverage is in excellent condition with >92% statement coverage. All major thresholds are well above target levels, indicating comprehensive test suite maturity.

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🛡️ Security-Critical Path Status

Test coverage for security-critical components is strong:

• src/host-iptables.ts — Firewall rule generation: Excellent coverage (>80%)
• src/squid-config.ts — Domain ACL rules: Excellent coverage (>90%)
• src/domain-patterns.ts — Domain validation: 100% statement coverage
• src/docker-manager.ts — Container lifecycle: Strong coverage (>80%)
• src/cli.ts — Entry point: Good coverage (85%+)

No critical security-path gaps detected in core filtering and isolation logic.

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📋 Coverage Table

Files with <80% Statement Coverage (Gap Analysis)

File	Statements	Branches	Priority	Notes
src/bounded-execution/finite-disclosure.ts	9.26%	0.26%	CRITICAL	New enclave feature; minimal test coverage
src/enclave/runtime-preflight.ts	66.66%	41.02%	Low	Enclave startup validation; missing edge cases
src/microvm/rootfs.ts	71.69%	54.54%	Low	Cloud Hypervisor rootfs builder; partial coverage
src/commands/validators/config-assembly.ts	73.68%	25%	Low	Config validation logic; low branch coverage
src/test-helpers/config-writer-dependency-mocks.test-utils.ts	73.91%	100%	Low	Test utility; coverage acceptable for test code

All Other Files: ≥80% statement coverage

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🔧 Function Audit

High Coverage (95%+)

• Core composition and config generation (100+ files)
• Container lifecycle management
• Domain filtering logic
• DNS configuration
• Logging and diagnostics

Adequate Coverage (80–95%)

• Cloud Hypervisor backend integration
• Artifact preservation and permissions
• CLI option parsing
• Error handling paths

Gaps (<80%)

• New bounded-execution feature (finite-disclosure.ts) — 9.26% coverage
  • Context: Recently introduced for handling resource limits in enclave executors
  • Gap Type: Feature not yet fully tested; minimal implementation
  • Risk Level: High (new security-adjacent feature)

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📅 Recent Source Changes (last 7 days)

Active Areas:

1. Enclave Architecture — Recompile enclave smoke with gateway key handoff (#7763)

   • Files affected: src/enclave/, src/bounded-execution/
   • Status: Low test coverage; recommend prioritizing tests for new handoff logic

2. Container Image Validation — Support compiler-authorized digest-pinned container image manifests (#7601)

   • Files affected: Config assembly, manifest validation
   • Status: Good coverage on validation paths; low branch coverage in edge cases

No regression in established paths. Recent changes are in newer feature areas (enclaves, container policy) where test coverage is expected to grow.

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🔎 Notable Findings

1. Exceptional Overall Coverage — Project-wide 92.67% statement coverage indicates mature test suite. This is significantly higher than industry baseline (~70%) and reflects high test investment.

2. New Feature Gap — src/bounded-execution/finite-disclosure.ts (9.26% coverage) is a recently-introduced enclave feature with minimal tests. This is the only file at critical risk; all other <80% files are utility/config validators with acceptable risk profiles.

3. Branch Coverage Asymmetry — Some files show high statement coverage but low branch coverage (e.g., config-assembly.ts: 73.68% statements, 25% branches). This indicates basic path coverage but missing conditional branches and error cases.

4. Enclave Rollout Impact — Recent gateway handoff work (#7763) affects files with lower coverage. Current state is stable; recommend adding tests before full enclave rollout.

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🎯 Recommendations

HIGH Priority

• Add tests for src/bounded-execution/finite-disclosure.ts (9.26% → target 80%+)
  • Scope: Resource limit enforcement, timeout handling, cleanup operations
  • Effort: ~4–6 hours
  • Impact: Unblocks enclave feature validation
  • Success metric: ≥80% statement coverage, branch coverage >50%

MEDIUM Priority

• Improve branch coverage in src/commands/validators/config-assembly.ts (25% → target 75%+)

  • Scope: Add tests for error branches in config assembly (malformed configs, validation failures)
  • Effort: ~2–3 hours
  • Impact: Catches config-related failures earlier in pipeline
  • Success metric: Branch coverage >70%

• Add integration tests for enclave runtime preflight (src/enclave/runtime-preflight.ts, 66.66% → 85%+)

  • Scope: Gateway connectivity checks, MCP handshake, fallback paths
  • Effort: ~3–4 hours
  • Impact: Stabilizes new gateway-based enclave architecture
  • Success metric: Statement coverage >85%, branch coverage >60%

LOW Priority

• Cloud Hypervisor rootfs builder edge cases (src/microvm/rootfs.ts, 71.69% → 85%+)
  • Scope: Optional—only if microVM backend becomes primary runtime
  • Effort: ~2–3 hours
  • Impact: Future-proofing for Cloud Hypervisor adoption
  • Success metric: Statement coverage >80%

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Summary

✅ Strong overall test coverage (92.67% statements, 86.07% branches)
🟡 One critical gap in new bounded-execution feature (9.26% coverage)
✅ All security-critical paths well-covered (host-iptables, squid-config, domain filtering)
🔶 Minor branch coverage gaps in config validation, easily addressable

Recommended Action: Prioritize adding tests for finite-disclosure.ts enclave feature before marking enclaves as ready for production. All other gaps are in lower-risk utilities and can be addressed on the normal development cycle.

Generated by Test Coverage Reporter · copilot · sum00 · 19.4 AIC · ⊞ 5.4K · ◷

• expires on Sep 4, 2026, 3:32 PM UTC

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This discussion was automatically closed because it expired on 2026-09-04T15:32:23.582Z.

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