diff --git a/crates/api-grub/src/config.rs b/crates/api-grub/src/config.rs
index cfe96b7..9a30354 100644
--- a/crates/api-grub/src/config.rs
+++ b/crates/api-grub/src/config.rs
@@ -77,4 +77,54 @@ async fn save_new_config(config: &String) -> Result<()> {
 async fn init_unix_listener() -> Result<UnixListener> {
     let _ = fs::remove_file(SOCKET_PATH);
     Ok(UnixListener::bind(SOCKET_PATH)?)
+}
+
+
+#[cfg(test)]
+mod config_unittests {
+    use super::*;
+    use tokio::test;
+    
+    #[test]
+    async fn check_init_unix_listener() {
+        let res = init_unix_listener().await;
+        if res.is_ok() {
+            assert!(fs::remove_file(SOCKET_PATH).is_ok())
+        } else {
+            assert!(false)
+        }
+    }
+    #[test]
+    async fn check_save_new_config() {
+        use std::fs;
+        use integr_structs::api::ApiConfig;
+        use serde_json::to_string;
+        
+        let test_config_path  = "test_config_api.json";
+
+        // config gen  
+        let config = to_string::<ApiConfig>(&ApiConfig::default());
+        assert!(config.is_ok());
+        let config = config.unwrap();
+
+        // config file gen and write
+        assert!(fs::File::create(test_config_path).is_ok());
+        assert!(fs::write(test_config_path, config).is_ok());
+
+        // config file reading and checking content 
+        let file = fs::read_to_string(test_config_path);
+        assert!(file.is_ok());
+        let file = file.unwrap();
+        assert_ne!(file.len(), 0);
+        
+        //  deleting test config file
+        assert!(fs::remove_file(test_config_path).is_ok())   
+    }
+
+    #[test]
+    async fn check_pull_local_config() {
+        use std::path::Path;
+        let local_config = Path::new(CONFIG_PATH);
+        assert_eq!(local_config.is_file() && local_config.exists(), pull_local_config().await.is_ok())
+    }
 }
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