From 7dab636b0488b916d602f890537252a6771d107d Mon Sep 17 00:00:00 2001
From: Matthias Seitz <matthias.seitz@outlook.de>
Date: Tue, 9 Jul 2024 19:24:26 +0200
Subject: [PATCH] test: add serial lock for lockfile tests (#9403)

---
 crates/storage/db/src/lockfile.rs | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/crates/storage/db/src/lockfile.rs b/crates/storage/db/src/lockfile.rs
index e0da20348..828cec6e7 100644
--- a/crates/storage/db/src/lockfile.rs
+++ b/crates/storage/db/src/lockfile.rs
@@ -144,9 +144,19 @@ impl ProcessUID {
 #[cfg(test)]
 mod tests {
     use super::*;
+    use std::sync::{Mutex, MutexGuard, OnceLock};
+
+    // helper to ensure some tests are run serially
+    static SERIAL: OnceLock<Mutex<()>> = OnceLock::new();
+
+    fn serial_lock() -> MutexGuard<'static, ()> {
+        SERIAL.get_or_init(|| Mutex::new(())).lock().unwrap()
+    }
 
     #[test]
     fn test_lock() {
+        let _guard = serial_lock();
+
         let temp_dir = tempfile::tempdir().unwrap();
 
         let lock = StorageLock::try_acquire(temp_dir.path()).unwrap();
@@ -178,6 +188,8 @@ mod tests {
 
     #[test]
     fn test_drop_lock() {
+        let _guard = serial_lock();
+
         let temp_dir = tempfile::tempdir().unwrap();
         let lock_file = temp_dir.path().join(LOCKFILE_NAME);