diff --git a/src/utils/prcs.rs b/src/utils/prcs.rs
index c600882..4f5d2b7 100644
--- a/src/utils/prcs.rs
+++ b/src/utils/prcs.rs
@@ -251,7 +251,6 @@ mod process_unittests {
     }
     #[tokio::test]
     async fn is_active_check() {
-        // let _ = std::io::stdout().write_all(b"");
         let res1 = start_process("tmp-prc", "./tests/examples/tmp-prc").await;
         assert!(res1.is_ok());
         assert!(is_active("tmp-prc").await);
@@ -263,14 +262,17 @@ mod process_unittests {
     }
     #[tokio::test]
     async fn is_frozen_check() {
-        // let _ = std::io::stdout().write_all(b"");
         let res1 = start_process("freeze-check", "./tests/examples/freeze-check").await;
         assert!(res1.is_ok());
         assert!(!is_frozen("freeze-check").await);
     }
     #[tokio::test]
     async fn pidof_active_process() {
-        assert!(get_pid("systemd").await.is_some());
+        assert!(get_pid("pidof-prc").await.is_none());
+        let res1 = start_process("pidof-prc", "./tests/examples/pidof-prc").await;
+        assert!(res1.is_ok());
+        assert!(get_pid("pidof-prc").await.is_some());
+        let _ = terminate_process("pidof-prc").await;
     }
 
     // broken mechanism need to check
diff --git a/tests/examples/pidof-prc b/tests/examples/pidof-prc
new file mode 100755
index 0000000..704d548
Binary files /dev/null and b/tests/examples/pidof-prc differ