diff --git a/src/cmd_all/src/standalone.rs b/src/cmd_all/src/standalone.rs
index 819aba03d865e..fb58fe79f8377 100644
--- a/src/cmd_all/src/standalone.rs
+++ b/src/cmd_all/src/standalone.rs
@@ -344,6 +344,7 @@ mod test {
                             heap_profiling_dir: None,
                             dangerous_max_idle_secs: None,
                             connector_rpc_endpoint: None,
+                            temp_secret_file_dir: None,
                         },
                     ),
                     compute_opts: Some(
@@ -367,6 +368,7 @@ mod test {
                             async_stack_trace: None,
                             heap_profiling_dir: None,
                             connector_rpc_endpoint: None,
+                            temp_secret_file_dir: None,
                         },
                     ),
                     frontend_opts: Some(
@@ -383,6 +385,7 @@ mod test {
                             config_path: "src/config/test.toml",
                             metrics_level: None,
                             enable_barrier_read: None,
+                            temp_secret_file_dir: None,
                         },
                     ),
                     compactor_opts: None,
diff --git a/src/common/secret/src/secret_manager.rs b/src/common/secret/src/secret_manager.rs
index 9ce343c38d2ba..03d60872be6e9 100644
--- a/src/common/secret/src/secret_manager.rs
+++ b/src/common/secret/src/secret_manager.rs
@@ -33,6 +33,7 @@ static INSTANCE: std::sync::OnceLock<LocalSecretManager> = std::sync::OnceLock::
 #[derive(Debug)]
 pub struct LocalSecretManager {
     secrets: RwLock<HashMap<SecretId, Vec<u8>>>,
+    /// The local directory used to write secrets into file, so that it can be passed into some libararies
     secret_file_dir: PathBuf,
 }
 
@@ -59,6 +60,10 @@ impl LocalSecretManager {
     /// # Panics
     /// Panics if the secret manager is not initialized.
     pub fn global() -> &'static LocalSecretManager {
+        // Initialize the secret manager for unit tests.
+        #[cfg(debug_assertions)]
+        LocalSecretManager::init(None);
+
         INSTANCE.get().unwrap()
     }