Keep poisoned test locks from cascading across unrelated regressions

The repo-local backlog was effectively exhausted, so this sweep promoted the
newly observed test-lock poisoning pain point into ROADMAP #74 and fixed it in
place. Test-only env/cwd lock acquisition now recovers poisoned mutexes in the
remaining strict call sites, and each affected surface has a regression that
proves a panic no longer permanently poisons later tests.

Constraint: Keep the fix test-only and avoid widening runtime behavior changes
Rejected: Refactor shared helper signatures across broader call paths | unnecessary churn beyond the remaining strict test sites
Confidence: high
Scope-risk: narrow
Reversibility: clean
Directive: These guards only recover the mutex; tests that mutate env or cwd still must restore process-global state explicitly
Tested: cargo fmt --all --check
Tested: cargo clippy --workspace --all-targets -- -D warnings
Tested: cargo test --workspace
Tested: Architect review (APPROVE)
Not-tested: Additional fault-injection around partially restored env/cwd state after panic
Related: ROADMAP #74
This commit is contained in:
Yeachan-Heo
2026-04-12 13:52:41 +00:00
parent 6b4bb4ac26
commit f91d156f85
5 changed files with 112 additions and 38 deletions

View File

@@ -10534,7 +10534,7 @@ UU conflicted.rs",
#[test]
fn managed_sessions_default_to_jsonl_and_resolve_legacy_json() {
let _guard = cwd_lock().lock().expect("cwd lock");
let _guard = cwd_guard();
let workspace = temp_workspace("session-resolution");
std::fs::create_dir_all(&workspace).expect("workspace should create");
let previous = std::env::current_dir().expect("cwd");
@@ -10573,7 +10573,7 @@ UU conflicted.rs",
#[test]
fn latest_session_alias_resolves_most_recent_managed_session() {
let _guard = cwd_lock().lock().expect("cwd lock");
let _guard = cwd_guard();
let workspace = temp_workspace("latest-session-alias");
std::fs::create_dir_all(&workspace).expect("workspace should create");
let previous = std::env::current_dir().expect("cwd");
@@ -10606,7 +10606,7 @@ UU conflicted.rs",
#[test]
fn load_session_reference_rejects_workspace_mismatch() {
let _guard = cwd_lock().lock().expect("cwd lock");
let _guard = cwd_guard();
let workspace_a = temp_workspace("session-mismatch-a");
let workspace_b = temp_workspace("session-mismatch-b");
std::fs::create_dir_all(&workspace_a).expect("workspace a should create");
@@ -10680,6 +10680,24 @@ UU conflicted.rs",
LOCK.get_or_init(|| Mutex::new(()))
}
fn cwd_guard() -> MutexGuard<'static, ()> {
cwd_lock()
.lock()
.unwrap_or_else(std::sync::PoisonError::into_inner)
}
#[test]
fn cwd_guard_recovers_after_poisoning() {
let poisoned = std::thread::spawn(|| {
let _guard = cwd_guard();
panic!("poison cwd lock");
})
.join();
assert!(poisoned.is_err(), "poisoning thread should panic");
let _guard = cwd_guard();
}
fn temp_workspace(label: &str) -> PathBuf {
let nanos = std::time::SystemTime::now()
.duration_since(std::time::UNIX_EPOCH)