// Basic unit tests for xembed-sni-proxy

#[cfg(test)]
mod tests {
    use x11rb::protocol::xproto::Atom;

    #[test]
    fn test_icon_size_parsing() {
        // Test the icon size parsing logic from main.rs
        fn parse_icon_size(env_var: Option<&str>) -> u16 {
            env_var
                .map(|s| s.to_string())
                .and_then(|s| s.parse().ok())
                .filter(|&s| s > 0)
                .unwrap_or(64)
        }

        // Test valid sizes
        assert_eq!(parse_icon_size(Some("32")), 32);
        assert_eq!(parse_icon_size(Some("128")), 128);
        assert_eq!(parse_icon_size(Some("64")), 64);
        
        // Test invalid sizes (should fall back to default)
        assert_eq!(parse_icon_size(Some("0")), 64);
        assert_eq!(parse_icon_size(Some("-1")), 64);
        assert_eq!(parse_icon_size(Some("invalid")), 64);
        assert_eq!(parse_icon_size(None), 64);
    }

    #[test]
    fn test_error_handling_patterns() {
        // Test that our error handling patterns work correctly
        let result: Result<(), Box<dyn std::error::Error>> = Ok(());
        assert!(result.is_ok());
        
        let err_result: Result<(), Box<dyn std::error::Error>> = Err("test error".into());
        assert!(err_result.is_err());
    }

    #[test]
    fn test_atoms_struct() {
        // This will be expanded once we have a way to test X11 connection
        // For now, just verify the struct compiles
        
        #[allow(dead_code)]
        struct Atoms {
            net_system_tray_s0: Atom,
            net_system_tray_opcode: Atom,
            manager: Atom,
            xembed: Atom,
        }
        
        // Struct should compile without xembed_info field
        let _atoms = Atoms {
            net_system_tray_s0: 0,
            net_system_tray_opcode: 0,
            manager: 0,
            xembed: 0,
        };
    }
}