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The codebase demonstrates exceptional overall test coverage across all metrics. The firewall's core infrastructure is well-tested, with baseline security-critical paths protected.
🛡️ Security-Critical Path Status
Core Security Components:
File
Lines
Statements
Branches
Status
domain-patterns.ts
100%
100%
89.47%
✅ Secure
docker-manager.ts
100%
100%
100%
✅ Secure
domain-matchers.ts
98.14%
98.14%
95%
✅ Secure
container-lifecycle.ts
96.66%
96.27%
90%
✅ Strong
cli.ts
85.71%
85.71%
50%
⚠️ Gap
Finding: The main CLI entry point (cli.ts) has a 50% branch coverage gap. This is the orchestration point for the entire workflow and warrants improvement.
📋 Coverage Table
Low Coverage Files (<80%) (5 identified)
File
Statements
Branches
Severity
finite-disclosure.ts
9.26%
0.26%
🔴 CRITICAL
network-reservation.ts
50.22%
54.26%
🟡 LOW
runtime-preflight.ts
66.66%
41.02%
🟡 LOW
rootfs.ts
71.69%
54.54%
🟡 LOW
config-assembly.ts
73.68%
25%
🟡 LOW
🔧 Function Audit
High-Coverage Functions (90%+):
Domain validation, normalization, and matching logic
Container lifecycle management (startup, cleanup, state tracking)
Docker Compose YAML generation
iptables rule generation
Artifact preservation and permissions
Coverage Gaps Identified:
finite-disclosure.ts (9.26% stmt, 0.26% branch) — Protocol v2 for enclave finite-disclosure request/result validation. This is a critical new feature with almost no test coverage. Schema parsing, cardinality calculation, and envelope canonicalization paths are untested.
config-assembly.ts (73.68% stmt, 25% branch) — Configuration assembly and validation. Only 25% branch coverage means conditional paths (error handling, edge cases) are largely untested.
network-reservation.ts (50.22% stmt) — microVM network reservation logic. Early-stage feature with only half the code paths exercised.
These are newer, less-mature subsystems being developed in parallel with stable core infrastructure.
🔎 Notable Findings
Excellent Core Stability — The baseline firewall (Squid config, domain filtering, container lifecycle, iptables rules) is comprehensively tested at 95%+ coverage. The security perimeter is well-protected.
Critical Gap: finite-disclosure Protocol — The enclave protocol v2 implementation (finite-disclosure.ts, 9.26% coverage) is security-sensitive and protocol-critical. It needs immediate test coverage expansion before any production deployment of enclaves.
Branch Coverage Drift — While statement coverage is excellent (91.74%), branch coverage is lower (85.42%). This suggests complex conditional logic, especially in error handling and edge cases, is underexercised.
CLI Orchestration Weak Spot — The main cli.ts entry point has 50% branch coverage. The other half likely includes error paths, signal handling, and cleanup logic that should be exercised.
🎯 Recommendations
🔴 HIGH PRIORITY
Expand finite-disclosure.ts test coverage to 80%+
Why: Protocol security and cardinality correctness depend on full coverage of schema parsing, validation, and result envelope canonicalization.
Why: Main entry point orchestrates the entire firewall. Untested branches likely include error paths, signal handlers (SIGINT/SIGTERM), and cleanup flows.
Action: Add tests for:
Signal handling and graceful shutdown
Configuration generation failures
Container startup errors
Cleanup and rollback paths
Effort: Medium (8–10 test cases)
🟡 MEDIUM PRIORITY
Increase branch coverage in config-assembly.ts from 25% to 60%+
Why: Low branch coverage (only 25%) indicates most conditional paths are untested. Error handling and edge cases are critical in configuration assembly.
Why: These emerging features have <75% coverage. As they mature, coverage should improve to match stable code (95%+).
Action: Prioritize test coverage for initialization, edge cases, and failure scenarios.
Timeline: Integrate incrementally as features are developed (not a blocker for current release if features are behind a flag).
Effort: Low-to-Medium (2–3 test cases per file initially; grow as features mature)
Summary
The gh-aw-firewall codebase is exceptionally well-tested overall (91.74% statement coverage). The core security perimeter is robust. However, new feature areas require immediate attention:
⚠️ Enclave protocol (finite-disclosure.ts) needs urgent test expansion before production.
⚠️ CLI orchestration (cli.ts) has untested error and cleanup paths.
⚠️ Configuration assembly (config-assembly.ts) has weak branch coverage.
📈 microVM and enclave subsystems should track toward 90%+ coverage as they stabilize.
Action items are prioritized by security impact and production readiness. Stable core infrastructure is protected; new features should reach baseline coverage before merging into main.
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📊 Test Coverage Report — 2026-09-01
Overall Coverage
The codebase demonstrates exceptional overall test coverage across all metrics. The firewall's core infrastructure is well-tested, with baseline security-critical paths protected.
🛡️ Security-Critical Path Status
Core Security Components:
domain-patterns.tsdocker-manager.tsdomain-matchers.tscontainer-lifecycle.tscli.tsFinding: The main CLI entry point (
cli.ts) has a 50% branch coverage gap. This is the orchestration point for the entire workflow and warrants improvement.📋 Coverage Table
Low Coverage Files (<80%) (5 identified)
finite-disclosure.tsnetwork-reservation.tsruntime-preflight.tsrootfs.tsconfig-assembly.ts🔧 Function Audit
High-Coverage Functions (90%+):
Coverage Gaps Identified:
finite-disclosure.ts(9.26% stmt, 0.26% branch) — Protocol v2 for enclave finite-disclosure request/result validation. This is a critical new feature with almost no test coverage. Schema parsing, cardinality calculation, and envelope canonicalization paths are untested.config-assembly.ts(73.68% stmt, 25% branch) — Configuration assembly and validation. Only 25% branch coverage means conditional paths (error handling, edge cases) are largely untested.network-reservation.ts(50.22% stmt) — microVM network reservation logic. Early-stage feature with only half the code paths exercised.rootfs.ts(71.69% stmt) — microVM rootfs preparation. Several initialization branches remain untested.runtime-preflight.ts(66.66% stmt) — Enclave runtime preflight checks. Error and edge-case branches not covered.📅 Recent Source Changes (last 7 days)
The identified low-coverage files are all in emerging feature areas:
These are newer, less-mature subsystems being developed in parallel with stable core infrastructure.
🔎 Notable Findings
Excellent Core Stability — The baseline firewall (Squid config, domain filtering, container lifecycle, iptables rules) is comprehensively tested at 95%+ coverage. The security perimeter is well-protected.
Critical Gap: finite-disclosure Protocol — The enclave protocol v2 implementation (
finite-disclosure.ts, 9.26% coverage) is security-sensitive and protocol-critical. It needs immediate test coverage expansion before any production deployment of enclaves.Branch Coverage Drift — While statement coverage is excellent (91.74%), branch coverage is lower (85.42%). This suggests complex conditional logic, especially in error handling and edge cases, is underexercised.
CLI Orchestration Weak Spot — The main
cli.tsentry point has 50% branch coverage. The other half likely includes error paths, signal handling, and cleanup logic that should be exercised.🎯 Recommendations
🔴 HIGH PRIORITY
Expand
finite-disclosure.tstest coverage to 80%+Improve
cli.tsbranch coverage from 50% to 80%+🟡 MEDIUM PRIORITY
Increase branch coverage in
config-assembly.tsfrom 25% to 60%+Expand microVM feature tests (
network-reservation.ts,rootfs.ts,runtime-preflight.ts)Summary
The gh-aw-firewall codebase is exceptionally well-tested overall (91.74% statement coverage). The core security perimeter is robust. However, new feature areas require immediate attention:
finite-disclosure.ts) needs urgent test expansion before production.cli.ts) has untested error and cleanup paths.config-assembly.ts) has weak branch coverage.Action items are prioritized by security impact and production readiness. Stable core infrastructure is protected; new features should reach baseline coverage before merging into main.
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