Now using macaddr datatype and added test for adding devices and displaynames

src/util.rs

@@ -0,0 +1,71 @@
+
+
+use thiserror::Error;
+
+
+
+pub fn parse_mac_address(mac: &str) -> Result<[u8; 6], MacAddressError> {
+    if mac.len() != 12 {
+        return Err(MacAddressError::Length(mac.len()))
+    }
+
+    let mut mac_bytes = [0u8; 6];
+    for i in 0..6 {
+        let hex_part = &mac[i * 2..i * 2 + 2];
+        mac_bytes[i] = u8::from_str_radix(hex_part, 16)?;
+    }
+
+    Ok(mac_bytes)
+}
+
+#[derive(Error, Debug)]
+pub enum MacAddressError {
+    #[error("Error converting MAC Address")]
+    Conversion(#[from] std::num::ParseIntError),
+    #[error("MAC Address length mismatch")]
+    Length(usize),
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_valid_mac_address_plain() {
+        let mac_str = "001A2B3C4D5E";
+        let expected = [0x00, 0x1A, 0x2B, 0x3C, 0x4D, 0x5E];
+        assert_eq!(parse_mac_address(mac_str).unwrap(), expected);
+    }
+
+    #[test]
+    fn test_valid_lowercase_mac_address() {
+        let mac_str = "001a2b3c4d5e";
+        let expected = [0x00, 0x1A, 0x2B, 0x3C, 0x4D, 0x5E];
+        assert_eq!(parse_mac_address(mac_str).unwrap(), expected);
+    }
+
+    #[test]
+    fn test_invalid_mac_address_wrong_length() {
+        let mac_str = "001A2B3C4D";
+        assert!(parse_mac_address(mac_str).is_err());
+    }
+
+    #[test]
+    fn test_invalid_mac_address_invalid_characters() {
+        let mac_str = "001A2B3C4DZZ";
+        assert!(parse_mac_address(mac_str).is_err());
+    }
+
+    #[test]
+    fn test_empty_mac_address() {
+        let mac_str = "";
+        assert!(parse_mac_address(mac_str).is_err());
+    }
+
+    #[test]
+    fn test_mac_address_with_extra_spaces() {
+        let mac_str = "001A2B3C 4D5E";
+        assert!(parse_mac_address(mac_str).is_err());
+    }
+}
+