add tests

Cargo.toml

@@ -15,6 +15,7 @@ release-build = ["openssl/vendored"]
 
 [dev-dependencies]
 rand = "0.8.5"
+rusty-fork = "0.3.0"
 
 [profile.release]
 opt-level = "z"       # Optimize for binary size

src/config_server.rs

@@ -175,6 +175,26 @@ mod tests {
         default_config_path, default_ntp, default_socket_group, default_socket_user, ConfigServer,
     };
     use std::collections::HashMap;
+    use std::path::PathBuf;
+
+    #[test]
+    fn test_get_pem_files() {
+        let expected: Vec<PathBuf> = vec![];
+        assert_eq!(ConfigServer::get_pem_files(&PathBuf::from("/foo/bar/baz")), expected);
+    }
+
+    #[test]
+    fn test_get_pem_path() {
+        let config_server = ConfigServer {
+            config_dir: PathBuf::from("/foo/bar/baz"),
+            ..Default::default()
+        };
+
+        assert_eq!(
+            config_server.get_pem_path().unwrap_err().to_string(),
+            r#"Could not find any .pem files in "/foo/bar/baz""#
+        );
+    }
 
     #[test]
     fn test_create_deserialize() {

tests/server_test.rs

@@ -2,26 +2,35 @@
 mod tests {
     use ruroco::config_server::ConfigServer;
     use ruroco::server::Server;
+    use rusty_fork::rusty_fork_test;
     use std::env;
     use std::path::PathBuf;
 
-    #[test]
-    fn test_create_invalid_pid() {
-        env::set_var("LISTEN_PID", "12345");
-
-        let config_dir =
-            env::current_dir().unwrap_or(PathBuf::from("/tmp")).join("tests").join("conf_dir");
-
-        let result = Server::create(
-            ConfigServer {
-                config_dir,
-                ..Default::default()
-            },
-            None,
-        );
-
-        assert!(result.is_err());
-        assert_eq!(result.err().unwrap(), "LISTEN_PID was set, but not to our PID");
+    rusty_fork_test! {
+        #[test]
+        fn test_create_server_udp_socket() {
+            let result = ConfigServer::default().create_server_udp_socket(None).unwrap();
+            assert_eq!(format!("{result:?}"), "UdpSocket { addr: [::]:34020, fd: 3 }");
+        }
+
+        #[test]
+        fn test_create_invalid_pid() {
+            env::set_var("LISTEN_PID", "12345");
+
+            let config_dir =
+                env::current_dir().unwrap_or(PathBuf::from("/tmp")).join("tests").join("conf_dir");
+
+            let result = Server::create(
+                ConfigServer {
+                    config_dir,
+                    ..Default::default()
+                },
+                None,
+            );
+
+            assert!(result.is_err());
+            assert_eq!(result.err().unwrap(), "LISTEN_PID was set, but not to our PID");
+        }
     }
 
     #[test]