use niom_webrtc::config::Config;
use niom_webrtc::constants::{DEFAULT_SIGNALING_URL, DEFAULT_STUN_SERVER};

#[test]
fn default_stun_server_present() {
    assert!(DEFAULT_STUN_SERVER.contains("stun:"));
}

#[test]
fn config_from_file_roundtrip() {
    // Create a temporary JSON in /tmp and read it via Config::from_file
    let tmp = tempfile::NamedTempFile::new().expect("tempfile");
    let cfg_json = r#"{ "server": { "stun_server": "stun:example.org:3478", "signaling_url": "ws://example.org/ws" } }"#;
    std::fs::write(tmp.path(), cfg_json).expect("write");
    let cfg = Config::from_file(tmp.path()).expect("load");
    assert_eq!(cfg.server.stun_server, "stun:example.org:3478");
    assert_eq!(cfg.server.signaling_url, "ws://example.org/ws");

    // Missing fields fall back to defaults
    let cfg_json_missing = r#"{ "server": { "stun_server": "stun:another.org:9999" } }"#;
    std::fs::write(tmp.path(), cfg_json_missing).expect("write missing");
    let cfg_missing = Config::from_file(tmp.path()).expect("load missing");
    assert_eq!(cfg_missing.server.stun_server, "stun:another.org:9999");
    assert_eq!(cfg_missing.server.signaling_url, DEFAULT_SIGNALING_URL);
}