add test case

.gitignore

@@ -2,7 +2,7 @@
 # will have compiled files and executables
 debug/
 target/
-
+.idea/
 # Remove Cargo.lock from gitignore if creating an executable, leave it for libraries
 # More information here https://doc.rust-lang.org/cargo/guide/cargo-toml-vs-cargo-lock.html
 Cargo.lock

src/config/config.rs

@@ -4,14 +4,14 @@ use serde::{Deserialize, Serialize};
 
 #[derive(Debug, Serialize, Deserialize)]
 pub struct Rule {
-    name: String,
-    sequence: Vec<i32>,
-    timeout: i32,
-    command: String,
+    pub name: String,
+    pub sequence: Vec<i32>,
+    pub timeout: i32,
+    pub command: String,
 }
 
 #[derive(Debug, Serialize, Deserialize)]
 pub struct Config {
-    interface: String,
-    rules: Vec<Rule>,
+    pub interface: String,
+    pub rules: Vec<Rule>,
 }

src/config/mod.rs

@@ -1 +1,28 @@
 mod config;
+
+use config::Config;
+use std::fs::File;
+use std::io::Read;
+
+fn load_config() -> Result<Config, Box<dyn std::error::Error>> {
+    let mut file = File::open("config.yaml")?;
+    let mut content = String::new();
+
+    file.read_to_string(&mut content)?;
+    let config: Config = serde_yaml::from_str(&content)?;
+
+    Ok(config)
+}
+
+// test case for load_config
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_load_config() {
+        let config = load_config().unwrap();
+        assert_eq!(config.interface, "enp3s0");
+        assert_eq!(config.rules.len(), 2);
+    }
+}

src/main.rs

@@ -1,4 +1,6 @@
 mod server;
+mod config;
+
 use server::Server;
 
 fn main() {