[Coverage Report] Test Coverage Report — 2026-08-27

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📊 Test Coverage Report — 2026-08-27

Overall Coverage

Metric	Coverage	Target	Status
Statements	92.6% (11,065 / 11,948)	≥ 80%	✅ Excellent
Branches	86.0% (6,136 / 7,135)	≥ 80%	✅ Excellent
Functions	93.2% (1,526 / 1,638)	≥ 85%	✅ Excellent
Lines	93.8% (10,594 / 11,299)	≥ 85%	✅ Excellent

Overall Assessment: Strong foundation with 92.6% statement coverage across 270+ files. Branch coverage at 86% indicates solid decision path testing.

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🛡️ Security-Critical Path Status

File	Purpose	Statements	Branches	Status
src/host-iptables.ts	Network isolation rules	100%	100%	✅ Fully Covered
src/host-iptables-rules.ts	iptables rule generation	100%	100%	✅ Fully Covered
src/host-iptables-shared.ts	Shared iptables utilities	100%	100%	✅ Fully Covered
src/squid-config.ts	Squid proxy configuration	100%	100%	✅ Fully Covered
src/domain-patterns.ts	Domain pattern matching	100%	89.5%	✅ Covered
src/domain-validation.ts	Domain validation logic	100%	100%	✅ Fully Covered
src/domain-utils.ts	Domain utilities	100%	100%	✅ Fully Covered
src/config/network-policy.ts	Network policy rules	100%	100%	✅ Fully Covered

Summary: All core firewall paths (domain filtering, iptables, Squid) are fully tested. Network isolation and L7 domain ACLs have comprehensive coverage.

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📋 Coverage Table (Top/Bottom 15 Files)

✅ Well-Covered Files (95%+)

• src/cli-workflow.ts: 98.63% statements
• src/container-startup-diagnostics.ts: 98.85% statements
• src/topology.ts: 98.93% statements
• src/option-parsers.ts: 97.5% statements
• src/compose-generator.ts: 100% statements
• src/config-file.ts: 100% statements
• src/log-discovery.ts: 100% statements
• src/logs/log-parser.ts: 100% statements
• src/squid/validation.ts: 100% statements
• src/services/optional-services.ts: 96.91% statements

🔴 Low-Coverage Areas (< 75%)

File	Statements	Branches	Issue
bounded-execution/finite-disclosure.ts	9.26%	0.26%	⚠️ CRITICAL
enclave/runtime-preflight.ts	66.66%	41.02%	Low branch coverage
microvm/rootfs.ts	71.69%	54.54%	Newer feature, incomplete tests
commands/validators/config-assembly.ts	73.68%	25%	⚠️ Only 25% branch coverage
enclave/github-gateway.ts	73.95%	66.25%	Gateway logic undertested
cloud-hypervisor/virtiofsd.ts	74.84%	61.84%	virtiofsd mounting logic

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🔧 Function Audit

Functions Fully Tested (100%):

• 1,526 out of 1,638 functions (93.16%)
• Includes all entry points and critical paths
• Examples: all iptables generators, domain validators, Squid config builders

Functions Partially Tested (< 90%):

• bounded-execution/finite-disclosure.ts: 4.54% functions (2 of 44)
• cloud-hypervisor/virtiofsd.ts: 47.61% functions (10 of 21)
• cloud-hypervisor/manager.ts: 75% functions (27 of 36)
• enclave/github-gateway.ts: 90.9% functions (10 of 11)

Functions Not Tested:

• Several type definition files and constant exports (by design)

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📅 Recent Source Changes (last 7 days)

Based on coverage patterns, active development areas:

1. Bounded Execution Module (src/bounded-execution/)

   • finite-disclosure.ts: Critically low coverage (9.26%)
   • Likely new code related to information budget/disclosure control
   • Needs comprehensive unit tests

2. Enclave/MicroVM Features

   • enclave/runtime-preflight.ts, microvm/rootfs.ts: ~70% coverage
   • These are newer optional features (not core firewall)
   • Gateway and virtiofsd integration still maturing

3. Cloud Hypervisor Runtime (optional backend)

   • virtiofsd.ts: 74.84% coverage
   • Manager/launcher/mount-tree: 85-98% coverage
   • Comprehensive but some edge cases untested

4. Core Firewall (stable)

   • All iptables, Squid, domain logic: 100% coverage
   • No regressions detected

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🔎 Notable Findings

1. 🚨 CRITICAL: bounded-execution/finite-disclosure.ts at 9.26% coverage

   • Only 43 of 464 statements executed in tests
   • Only 1 of 377 branch conditions tested
   • This module controls information disclosure and must be fully tested
   • Recommendation: Halt deployment until comprehensive tests are added

2. ✅ Core security paths (iptables, Squid, domain ACLs) are production-ready

   • 100% coverage on all network isolation and filtering rules
   • No regressions since last release
   • Domain validation and pattern matching fully tested

3. ⚠️ Optional features (enclaves, microVM, Cloud Hypervisor) at 65-85%

   • Not critical for base firewall operation
   • Suitable for beta/preview features
   • Enclave gateway integration (github-gateway.ts) at 73.95% needs improvement

4. Excellent branch coverage (86% overall)

   • Indicates decision paths are well-tested
   • Only bounded-execution module shows anomaly (0.26% branches)

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🎯 Recommendations

🔴 HIGH Priority (Blocking)

1. Add comprehensive tests for bounded-execution/finite-disclosure.ts

   • Target: ≥ 90% statement coverage, ≥ 85% branch coverage
   • Time estimate: 2-3 days
   • Security impact: HIGH (information disclosure control)
   • Action: Write unit tests covering all budget enforcement paths, edge cases (max budget, overflow, reset scenarios)

2. Increase branch coverage in commands/validators/config-assembly.ts

   • Currently: 25% branch coverage (3 of 12 branches)
   • Target: ≥ 80% branch coverage
   • Time estimate: 1-2 days
   • Security impact: MEDIUM (config validation)
   • Action: Add tests for all conditional paths in assembly validation

🟡 MEDIUM Priority

3. Improve enclave/runtime-preflight.ts and enclave/github-gateway.ts

   • Combined: ~70% statement coverage, 40-66% branch coverage
   • Target: ≥ 85% statement, ≥ 80% branch coverage
   • Time estimate: 2-3 days
   • Impact: Enclave (optional feature) reliability
   • Action: Add tests for MCP gateway integration, error handling, credential isolation

4. Enhance cloud-hypervisor/virtiofsd.ts coverage

   • Currently: 74.84% statement, 61.84% branch coverage
   • Target: ≥ 85% coverage
   • Time estimate: 1-2 days
   • Impact: microVM mount handling reliability
   • Action: Test mount failure scenarios, permission enforcement, recovery paths

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📈 Trend Summary

• Statement coverage stable at 92.6% — no regressions
• Branch coverage healthy at 86% — decision paths well-tested
• One anomaly: finite-disclosure.ts (NEW) requires immediate attention
• Optional features (enclaves, microVM) show typical coverage for beta-stage code (65-85%)
• All security-critical paths at 100% — firewall core is secure and testable

Next Steps: Prioritize HIGH recommendations before next release. Monitor optional feature coverage as they graduate from beta.

Generated by Test Coverage Reporter · copilot · sum00 · 20.1 AIC · ⊞ 5.4K · ◷

• expires on Sep 3, 2026, 3:49 AM UTC