diff --git a/ylong_runtime/tests/async_pool.rs b/ylong_runtime/tests/async_pool.rs
index 4742157a3bd7ffc41acbc19ce0a085dd780f46ab..f0e0df55ee3c2ea2476081537c78e66681189998 100644
--- a/ylong_runtime/tests/async_pool.rs
+++ b/ylong_runtime/tests/async_pool.rs
@@ -13,14 +13,13 @@
 #![cfg(target_os = "linux")]
 #![cfg(not(feature = "ffrt"))]
 use libc::getpid;
+use std::ffi::OsString;
 use std::fs;
 use ylong_runtime::builder::RuntimeBuilder;
 #[cfg(target_os = "linux")]
 use ylong_runtime::util::core_affinity::linux::get_other_thread_affinity;
 #[cfg(target_os = "linux")]
 use ylong_runtime::util::num_cpus::get_cpu_num;
-pub mod helpers;
-use helpers::dump_dir;
 
 // Simple asynchronous tasks
 async fn test_future(num: usize) -> usize {
@@ -40,6 +39,18 @@ async fn test_nested_future(i: usize, j: usize) -> usize {
     test_multi_future(i, j).await
 }
 
+// Gets the pid of all current threads (including the main thread)
+unsafe fn dump_dir() -> Vec<OsString> {
+    let current_pid = getpid();
+    let dir = format!("/proc/{}/task", current_pid.to_string().as_str());
+    let mut result = Vec::new();
+
+    for entry in fs::read_dir(dir.as_str()).expect("read failed") {
+        result.push(entry.unwrap().file_name());
+    }
+    result
+}
+
 // Get the name of the thread based on the thread pid
 unsafe fn name_of_pid(pid: &str) -> Option<String> {
     let current_pid = getpid();
diff --git a/ylong_runtime/tests/helpers/mod.rs b/ylong_runtime/tests/helpers/mod.rs
index 64da3ba46e8998b18542ff5bd41b2c7e1e1c4e06..1d18b44f244a447f8c5713f1079800130b784c22 100644
--- a/ylong_runtime/tests/helpers/mod.rs
+++ b/ylong_runtime/tests/helpers/mod.rs
@@ -11,10 +11,6 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-use libc::getpid;
-use std::ffi::OsString;
-use std::fs;
-
 pub async fn test_future(num: usize) -> usize {
     num
 }
@@ -29,16 +25,3 @@ pub async fn test_multi_future_in_async(i: usize, j: usize) -> (usize, usize) {
 pub async fn test_async_in_async(i: usize, j: usize) -> (usize, usize) {
     test_multi_future_in_async(i, j).await
 }
-
-// Gets the pid of all current threads (including the main thread)
-#[allow(dead_code)]
-pub(crate) unsafe fn dump_dir() -> Vec<OsString> {
-    let current_pid = getpid();
-    let dir = format!("/proc/{}/task", current_pid.to_string().as_str());
-    let mut result = Vec::new();
-
-    for entry in fs::read_dir(dir.as_str()).expect("read failed") {
-        result.push(entry.unwrap().file_name());
-    }
-    result
-}