[Coverage Report] Test Coverage Report — 2026-06-26

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Overall Coverage

Metric	Coverage	Covered / Total
Lines	98.28%	5,107 / 5,196
Statements	98.21%	5,277 / 5,373
Functions	99.53%	643 / 646
Branches	94.29%	2,924 / 3,101

Test suite: ~150 unit test files + 35 integration test files

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Security-Critical File Coverage

File	Lines	Branches	Functions	Notes
host-iptables.ts (barrel)	100%	100%	100%	✅
host-iptables-rules.ts	100%	100%	100%	✅
host-iptables-shared.ts	100%	100%	100%	✅
host-iptables-chain.ts	97.61%	90% (9/10)	100%	✅ 1 branch gap
host-iptables-validation.ts	100%	96.87% (31/32)	100%	✅
host-iptables-cleanup.ts	100%	100%	100%	✅
squid-config.ts (barrel)	100%	100%	100%	✅
domain-patterns.ts	100%	89.47% (17/19)	100%	⚠️ 2 branch gaps
docker-manager.ts	100%	100%	100%	✅

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Files With Branch Coverage Below 90%

File	Lines	Branches	Uncovered Branches
config-writer.ts	82.79%	78.94%	8 / 38
workdir-setup.ts	94.54%	79.62%	11 / 54
pid-tracker.ts	98.70%	80.76%	5 / 26
host-env.ts	95.91%	80.00%	4 / 20
ssl-bump.ts	94.05%	83.33%	4 / 24
logs/log-parser.ts	100%	84.28%	11 / 70
commands/preflight.ts	100%	83.78%	6 / 37
commands/network-setup.ts	100%	86.95%	3 / 23
domain-patterns.ts	100%	89.47%	2 / 19

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Notable Findings

• Excellent overall health: Line and function coverage are both above 98%, with 99.53% function coverage — nearly every callable path is exercised by the test suite.
• Security-critical paths are well-protected: All host-iptables-* modules and docker-manager.ts have 97–100% coverage on both lines and branches, giving strong confidence in network isolation logic.
• Branch coverage is the primary gap: The global branch coverage of 94.29% is solid, but config-writer.ts (78.94%) and workdir-setup.ts (79.62%) both fall below the 80% threshold — these are the only files that do.
• domain-patterns.ts has 2 uncovered branches: This security-critical file handles domain ACL pattern matching; the two missing branches (89.47%) represent edge cases in pattern validation that should be covered given the security implications.

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Recommendations

🔴 High — Cover missing branches in config-writer.ts (78.94% branch)

config-writer.ts is the only non-trivial file below the 80% branch threshold. Add tests targeting the 8 uncovered branches: focus on error paths during config file generation, filesystem write failures, and edge-case option combinations. Bringing this to ≥90% will close the last significant line-coverage gap (82.79%) as well.

🟡 Medium — Harden workdir-setup.ts branch coverage (79.62%)

workdir-setup.ts orchestrates workspace preparation before containers start. Its 11 uncovered branches (out of 54) likely involve error/cleanup scenarios and optional-flag paths. Adding tests for failed directory creation, missing workspace paths, and cleanup-on-error flows would push branch coverage above 90% and improve resilience guarantees.

🟢 Low — Close the 2 uncovered branches in domain-patterns.ts (89.47%)

domain-patterns.ts is security-critical — it governs domain ACL pattern matching and validation. The 2 uncovered branches represent edge cases (e.g., malformed domain inputs or boundary wildcard conditions). Given the security implications, adding targeted tests for these two cases is low-effort but high-value.

Generated by Test Coverage Reporter · 43.7 AIC · ⊞ 4.7K · ◷

• expires on Jul 3, 2026, 5:58 AM UTC