test(node): cover the component walk in validated_repo_disk_path (#411)

[beardthelion]

Summary

Closes #411. validated_repo_disk_path has three layers and the existing tests only exercised the first: every traversal input goes through owner_did/repo_name, which validate_path_components refuses before the starts_with check and the Component walk run. The walk was unfalsifiable; the issue demonstrated that emptying the ParentDir arm left the suite green.

The walk is reachable through repos_dir itself: the allowlist never sees it, PathBuf::join does not normalize it, and the component-wise starts_with still matches the unnormalized prefix, so ParentDir/CurDir land on the walk. Three tests: repos_dir containing .. is rejected by the ParentDir arm, a relative repos_dir starting with . is rejected by the CurDir arm (interior . segments are dropped by components() and never reach the walk, so the leading-dot relative path is the shape that covers it), and a clean repos_dir resolves.

Test plan

• cargo test -p gitlawb-node repo_store passes, including the three new tests.
• Load-bearing check: with both walk arms emptied, the two reject tests fail while the clean-dir control still passes; restored, all three pass.
• cargo test --workspace green (one unrelated coalesced-push announce test flaked under concurrent-suite load and passed on an isolated rerun). cargo clippy --workspace --all-targets -- -D warnings clean via the pre-push gate.

Notes

• Overlap: fix(node): fence a repo publish on the write attempt that owns it #285 changes make_store's signature and touches this tests module at different anchors; these tests call validated_repo_disk_path directly, so no compile dependency and no shared lines. The test-module addition in feat(node): per-IP write-surface rate brake + purge-spam admin tool #196 sits on a different base at a different anchor; adjacency risk only.

Summary by CodeRabbit

• Tests
  • Added coverage verifying that repository directory paths with unsafe path components are rejected.
  • Added coverage confirming that clean directory paths are accepted.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Essentials

Run ID: a8ea2ee9-1080-4210-80af-073372a28ee5

📥 Commits

Reviewing files that changed from the base of the PR and between bfc44f9 and 4485f07.

📒 Files selected for processing (1)

• crates/gitlawb-node/src/git/repo_store.rs

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📝 Walkthrough

Walkthrough

The change adds tests for validated_repo_disk_path. The tests cover rejection of .. and surviving leading . components in repos_dir, plus acceptance of a clean path.

Changes

Repository path validation

Layer / File(s)	Summary
Component-walk validation tests crates/gitlawb-node/src/git/repo_store.rs	Tests cover unsafe parent-directory and current-directory components in repos_dir, along with a valid clean path.

Priority: ⬇️ Low

Estimated code review effort: 1 (Trivial) | ~5 minutes

Change: Other

Suggested reviewers: gravirei

Merge Risk: ⚪ Minimal · up to 4485f

The tests provide the intended component-walk coverage, including current-directory rejection, parent-directory rejection, and clean-path acceptance.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly identifies the change: adding tests for the component walk in validated_repo_disk_path. It is concise and uses a Conventional Commit format.
Description check	✅ Passed	The description explains the motivation, changed tests, verification commands, issue link, scope, and overlap risks. It does not reproduce every template heading or checklist, but it provides the requ…
Linked Issues check	✅ Passed	The PR meets the coding requirement in issue #411. It adds tests in crates/gitlawb-node/src/git/repo_store.rs that pass a repos_dir containing .. and assert rejection. It also tests a leading-do…
Out of Scope Changes check	✅ Passed	The change is limited to 33 added test lines in repo_store.rs. The tests directly support issue #411. The PR does not modify exported declarations or add unrelated implementation changes.
Docstring Coverage	✅ Passed	Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 4 functions across 1 files.

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch test/issue-411-component-walk-coverage

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[greptile-apps]

Greptile Summary

This PR adds focused regression coverage for the component walk in validated_repo_disk_path.

• Verifies that parent-directory components introduced through repos_dir are rejected.
• Verifies that a leading current-directory component in a relative repos_dir is rejected.
• Adds a clean-directory control confirming valid paths remain accepted.

Confidence Score: 5/5

The PR appears safe to merge; the added tests directly cover the intended component-walk branches without changing production behavior.

Both malformed repos_dir inputs pass earlier validation and fail specifically in their targeted component-walk arms, while the clean control confirms valid paths still resolve.

Important Files Changed

Filename	Overview
crates/gitlawb-node/src/git/repo_store.rs	Adds sound positive and negative tests that directly exercise the previously uncovered Component::ParentDir and Component::CurDir validation branches.

_{Reviews (1): Last reviewed commit: "test(node): cover the component walk in ..." | Re-trigger Greptile}

[jatmn]

LGTM