hagent unittests fixed

src/utils/hagent.rs

@@ -1,5 +1,7 @@
 // module needed to check host-agent health condition and to communicate with it
 use tokio::{io::Interest, net::UnixStream};
+use anyhow::{Ok, Result, Error};
+use tokio::net::UnixListener;
 
 /// # Fn `open_unix_socket`
 /// ## opening unix-socket for host-agent communication 
@@ -14,9 +16,9 @@ use tokio::{io::Interest, net::UnixStream};
 ///
 /// *depends on* : -
 /// 
-async fn open_unix_socket() -> Result<UnixStream, std::io::Error> {
-    let socket = UnixStream::connect("/var/run/enode/hostagent.sock").await?;
-    Ok(socket)
+async fn open_unix_socket(sock_path: &str) -> Result<UnixStream, std::io::Error> {
+    // "/var/run/enode/hostagent.sock"
+    UnixStream::connect(sock_path).await
 }
 
 /// # Fn `ha_healthcheck`
@@ -32,15 +34,10 @@ async fn open_unix_socket() -> Result<UnixStream, std::io::Error> {
 ///
 /// *depends on* : -
 /// 
-async fn ha_healthcheck(socket: &UnixStream) -> Result<(), std::io::Error >{
+async fn ha_healthcheck(socket: &UnixStream) -> Result<(), Error> {
     socket.ready(Interest::WRITABLE).await?;
-    if socket.writable().await.is_ok() {
-        if let Err(er) = socket.try_write(b"Hello HAgent") {
-            return Err(er);
-        }
-    } else {
-        return Err(std::io::ErrorKind::WouldBlock.into());
-    }
+    socket.writable().await?;
+    socket.try_write(b"Hello HAgent")?;
     Ok(())
 }
 
@@ -57,28 +54,30 @@ async fn ha_healthcheck(socket: &UnixStream) -> Result<(), std::io::Error >{
 ///
 /// *depends on* : -
 /// 
-async fn ha_send_data(socket: &UnixStream, data: &str) -> Result<(), std::io::Error > {
+async fn ha_send_data(socket: &UnixStream, data: &str) -> Result<(), Error > {
     socket.ready(Interest::WRITABLE).await?;
-    if socket.writable().await.is_ok() {
-        if let Err(er) = socket.try_write(data.as_bytes()) {
-            return Err(er);
-        }
-    } else {
-        return Err(std::io::ErrorKind::WouldBlock.into());
-    }
+    socket.writable().await?;
+    socket.try_write(data.as_bytes())?;
     Ok(())
 }
 
 #[cfg(test)]
 mod hagent_unittets {
     use super::*;
+    const TEST_SOCKET: &str = "./tests/examples/hagent/hagent_test.sock";
+
+    async fn init_listener() -> UnixListener {
+        let _ = std::fs::remove_file(TEST_SOCKET);
+        UnixListener::bind(TEST_SOCKET).unwrap()
+    }
     #[tokio::test]
     // maybe bool : true -> alive, false -> dead
     // simple request on api
     async fn hagent_healthcheck() {
-        let sock = open_unix_socket().await;
+        let mut list = init_listener().await;
+        let sock = open_unix_socket(TEST_SOCKET).await;
         assert!(sock.is_ok());
-        let sock = sock.unwrap();
+        let mut sock = sock.unwrap();
         assert!(ha_healthcheck(&sock).await.is_ok());
     }
     #[tokio::test]
@@ -92,15 +91,17 @@ mod hagent_unittets {
         let metrics = Metrics::new(contm, vec![procm]);
         let metrics = &serde_json::to_string_pretty(&metrics).unwrap();
 
-        let sock = open_unix_socket().await;
+        let mut list = init_listener().await;
+        let sock = open_unix_socket(TEST_SOCKET).await;
         assert!(sock.is_ok());
-        let sock = sock.unwrap();
+        let mut sock = sock.unwrap();
         assert!(ha_healthcheck(&sock).await.is_ok());
         assert!(ha_send_data(&sock, &metrics).await.is_ok());
 
     }
     #[tokio::test]
     async fn open_unixsocket_test() {
-        assert!(open_unix_socket().await.is_ok());
+        let mut list = init_listener().await;
+        assert!(open_unix_socket(TEST_SOCKET).await.is_ok());
     }
 }