[Coverage Report] Test Coverage Report - 2026-08-30

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📊 Test Coverage Report — 2026-08-30

Overall Coverage

The codebase maintains strong test coverage at 92.67% statements (86.1% branches, 93.23% functions, 93.87% lines). With 5265 passing tests across 328 test suites, the firewall has comprehensive validation of core functionality.

Test Results Summary:

• ✅ 5265 passing tests across 328 test suites
• ⚠️ 1 failing test in api-proxy-env-config.test.ts (OTEL_SERVICE_NAME environment variable mismatch with workflow context)
• 📊 Average branch coverage: 86.1% (good for security-critical code)

🛡️ Security-Critical Path Status

EXCELLENT coverage for core network isolation components:

Component	Statements	Branches	Functions	Lines	Status
squid-config.ts	100%	100%	100%	100%	✅ Perfect
host-iptables.ts	100%	100%	100%	100%	✅ Perfect
host-iptables-chain.ts	100%	100%	100%	100%	✅ Perfect
host-iptables-rules.ts	100%	100%	100%	100%	✅ Perfect
host-iptables-validation.ts	100%	100%	100%	100%	✅ Perfect
domain-patterns.ts	100%	89.47%	100%	100%	✅ Strong
docker-manager.ts	100%	100%	100%	100%	✅ Perfect
cli.ts	85.71%	50%	100%	85.71%	⚠️ Needs Work

Key Insight: All Squid ACL generation, iptables rule chains, domain filtering, and Docker container lifecycle code are 100% covered. The network filtering layer is robust.

📋 Coverage Table

Top coverage gaps requiring attention:

File	Statements	Branches	Lines	Uncovered
bounded-execution/finite-disclosure.ts	9.26%	0.26%	11.49%	136-144, 214-403, 421-435, ...
enclave/runtime-preflight.ts	66.66%	41.02%	64.7%	37, 46-57, 68-73, 79
microvm/rootfs.ts	71.69%	54.54%	72%	33, 37, 52, 72-88, 101
commands/validators/config-assembly.ts	73.68%	25%	73.68%	82-83, 86-90, 101-105
enclave/github-gateway.ts	73.95%	66.25%	76.92%	44, 64, 67, 79, 90, 98, 111, 122...

🔧 Function Audit

Fully Covered Functions (100% coverage):

• ✅ All host-iptables-*.ts modules: rule generation, validation, cleanup
• ✅ squid-config.ts: ACL generation, domain matching
• ✅ docker-manager.ts: container lifecycle, volume management
• ✅ cli.ts: 100% functions covered (statements/branches are lower)
• ✅ domain-patterns.ts: all patterns and validators

Partially Covered / High-Priority for Testing:

• ⚠️ bounded-execution/finite-disclosure.ts: 4.54% function coverage — Token-counting and disclosure budgeting logic needs comprehensive test cases for disclosure timing paths
• ⚠️ enclave/runtime-preflight.ts: 100% functions but only 41.02% branches — Conditional paths in preflight validation need expansion
• ⚠️ microvm/rootfs.ts: 100% functions but only 54.54% branches — Rootfs construction error handling paths under-tested
• ⚠️ commands/validators/config-assembly.ts: 100% functions but only 25% branches — Configuration validation logic has many untested error branches

📅 Recent Source Changes (last 7 days)

Recent modifications suggest active development in proxy and runtime infrastructure:

• upstream-proxy.ts — Proxy forwarding logic
• topology.ts — Network topology configuration
• squid-config.ts — Domain ACL configuration
• ssl-key-storage.ts — SSL certificate handling
• redact-secrets.ts — Credential masking
• host-identity.ts — Container identity
• filesystem-policy.ts — Mount and filesystem policies

All these files have corresponding test files recently modified or created, indicating test-driven development is active.

🔎 Notable Findings

1. 🔒 Network Security Fortress: The domain filtering layer (squid-config.ts), iptables isolation rules, and container lifecycle management are all at 100% coverage with perfect branch coverage. This is the most critical security path and it is comprehensively tested.

2. ⚠️ Critical Gap in Disclosure Budgeting: finite-disclosure.ts has only 9.26% statement coverage and 0.26% branch coverage. This module handles token counting and disclosure budget enforcement — a critical component for preventing data exfiltration. This is the highest-priority remediation target.

3. 🏗️ Infrastructure Modules Partially Tested: Enclave runtime preflight checks, microVM rootfs construction, and config assembly validators all have 65–75% statement coverage but significantly lower branch coverage (25–54%). These cover less-common error paths and edge cases.

4. ✅ Test Suite Stability: 5265 tests passing with only 1 failure (OTEL_SERVICE_NAME naming in CI environment) shows high test reliability. The failure is non-critical and environment-specific.

🎯 Recommendations

🔴 High Priority

1. Expand bounded-execution/finite-disclosure.ts test coverage (9.26% → target: 85%+)
   • Add tests for token-counting paths (lines 214-403)
   • Add tests for disclosure budget enforcement (lines 421-435, 456-472)
   • Add tests for timing-based disclosure constraints (lines 489-535)
   • This module prevents credential exfiltration — comprehensive coverage is security-critical.

🟡 Medium Priority

2. Increase branch coverage in commands/validators/config-assembly.ts (25% → target: 75%+)

   • Add tests for validation failure paths (lines 82-90)
   • Add tests for configuration edge cases (lines 101-105)
   • This validator enforces configuration safety before container startup.

3. Improve error-path coverage in enclave/runtime-preflight.ts and microvm/rootfs.ts (40-55% branches → target: 80%+)

   • Expand branch coverage for preflight failure modes (lines 46-57, 68-73)
   • Add tests for rootfs construction failures (lines 72-88, 101)
   • These are infrastructure components with hidden failure modes under concurrent/resource-constrained conditions.

🟢 Low Priority

4. Minor improvement to cli.ts branch coverage (50% → target: 75%+)
   • Add integration tests for signal handling paths
   • Add tests for concurrent command execution branches
   • This is the CLI entry point; current coverage is acceptable but improved branch testing would catch edge cases in orchestration.

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Last Updated: 2026-08-30
Test Framework: Jest
Coverage Tool: @vitest/coverage-v8
Regression Status: ✅ No major regressions detected

Generated by Test Coverage Reporter · copilot · sum00 · 17.3 AIC · ⊞ 5.4K · ◷

• expires on Sep 6, 2026, 4:40 AM UTC

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This discussion was automatically closed because it expired on 2026-09-06T04:40:08.392Z.

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