diff --git a/Cargo.lock b/Cargo.lock
index f4c261f768..922dee62dd 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -703,6 +703,7 @@ dependencies = [
  "common-macro",
  "common-telemetry",
  "common-test-util",
+ "crossbeam-channel",
  "digest",
  "hex",
  "notify",
@@ -2416,11 +2417,10 @@ dependencies = [
 
 [[package]]
 name = "crossbeam-channel"
-version = "0.5.10"
+version = "0.5.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "82a9b73a36529d9c47029b9fb3a6f0ea3cc916a261195352ba19e770fc1748b2"
+checksum = "ab3db02a9c5b5121e1e42fbdb1aeb65f5e02624cc58c43f2884c6ccac0b82f95"
 dependencies = [
- "cfg-if 1.0.0",
  "crossbeam-utils",
 ]
 
diff --git a/src/auth/Cargo.toml b/src/auth/Cargo.toml
index db8c200545..5fa4bcaa2a 100644
--- a/src/auth/Cargo.toml
+++ b/src/auth/Cargo.toml
@@ -28,3 +28,4 @@ tokio.workspace = true
 
 [dev-dependencies]
 common-test-util.workspace = true
+crossbeam-channel = "0.5.12"
diff --git a/src/auth/src/user_provider/watch_file_user_provider.rs b/src/auth/src/user_provider/watch_file_user_provider.rs
index 19b6530f21..50a7cfa566 100644
--- a/src/auth/src/user_provider/watch_file_user_provider.rs
+++ b/src/auth/src/user_provider/watch_file_user_provider.rs
@@ -36,14 +36,21 @@ type WatchedCredentialRef = Arc<Mutex<Option<HashMap<String, Vec<u8>>>>>;
 /// Empty file is invalid; but file not exist means every user can be authenticated.
 pub(crate) struct WatchFileUserProvider {
     users: WatchedCredentialRef,
+    #[cfg(test)]
+    notify: crossbeam_channel::Receiver<()>,
 }
 
 impl WatchFileUserProvider {
     pub fn new(filepath: &str) -> Result<Self> {
+        #[cfg(test)]
+        let (tx_notify, rx_notify) = crossbeam_channel::unbounded();
+
         let credential = load_credential_from_file(filepath)?;
         let users = Arc::new(Mutex::new(credential));
         let this = WatchFileUserProvider {
             users: users.clone(),
+            #[cfg(test)]
+            notify: rx_notify,
         };
 
         let (tx, rx) = channel::<notify::Result<notify::Event>>();
@@ -66,13 +73,15 @@ impl WatchFileUserProvider {
                         match load_credential_from_file(&filepath) {
                             Ok(credential) => {
                                 *users.lock().expect("users credential must be valid") = credential;
-                                info!("User provider file {filepath} reloaded")
+                                info!("User provider file {filepath} reloaded");
+                                #[cfg(test)]
+                                let _ = tx_notify.send(());
                             }
                             Err(err) => {
                                 warn!(
                                     ?err,
                                     "Fail to load credential from file {filepath}; keep the old one",
-                                )
+                                );
                             }
                         }
                     }
@@ -117,7 +126,6 @@ pub mod test {
     use std::time::Duration;
 
     use common_test_util::temp_dir::create_temp_dir;
-    use tokio::time::sleep;
 
     use crate::user_provider::watch_file_user_provider::WatchFileUserProvider;
     use crate::user_provider::{Identity, Password};
@@ -140,12 +148,14 @@ pub mod test {
             ok,
             "username: {}, password: {}",
             username,
-            password
+            password,
         );
     }
 
     #[tokio::test]
     async fn test_file_provider() {
+        common_telemetry::init_default_ut_logging();
+
         let dir = create_temp_dir("test_file_provider");
         let file_path = format!("{}/test_file_provider", dir.path().to_str().unwrap());
         {
@@ -164,33 +174,45 @@ pub mod test {
 
         {
             // update the tmp file
+            let _ = provider.notify.try_iter().into_iter();
             let file = File::create(&file_path).unwrap();
             let mut lw = LineWriter::new(file);
             assert!(writeln!(lw, "root=654321").is_ok());
             lw.flush().unwrap();
         }
-        sleep(Duration::from_secs(2)).await; // wait the watcher to apply the change
+        provider
+            .notify
+            .recv_timeout(Duration::from_secs(1))
+            .unwrap();
         test_authenticate(&provider, "root", "123456", false).await;
         test_authenticate(&provider, "root", "654321", true).await;
         test_authenticate(&provider, "admin", "654321", false).await;
 
         {
             // remove the tmp file
+            let _ = provider.notify.try_iter().into_iter();
             std::fs::remove_file(&file_path).unwrap();
         }
-        sleep(Duration::from_secs(2)).await; // wait the watcher to apply the change
+        provider
+            .notify
+            .recv_timeout(Duration::from_secs(1))
+            .unwrap();
         test_authenticate(&provider, "root", "123456", true).await;
         test_authenticate(&provider, "root", "654321", true).await;
         test_authenticate(&provider, "admin", "654321", true).await;
 
         {
             // recreate the tmp file
+            let _ = provider.notify.try_iter().into_iter();
             let file = File::create(&file_path).unwrap();
             let mut lw = LineWriter::new(file);
             assert!(writeln!(lw, "root=123456").is_ok());
             lw.flush().unwrap();
         }
-        sleep(Duration::from_secs(2)).await; // wait the watcher to apply the change
+        provider
+            .notify
+            .recv_timeout(Duration::from_secs(1))
+            .unwrap();
         test_authenticate(&provider, "root", "123456", true).await;
         test_authenticate(&provider, "root", "654321", false).await;
         test_authenticate(&provider, "admin", "654321", false).await;