use clap::App;
use preftool_clap::ClapConfigExt;
use preftool_clap_derive::ClapConfig;

#[derive(ClapConfig)]
pub struct Server {
  #[preftool_clap(help = "Server host")]
  host: String,

  #[preftool_clap(help = "Server port")]
  port: usize,

  #[preftool_clap(help = "Server certificate (enables TLS)")]
  cert: Option<String>,
}

#[test]
fn sets_host() {
  let args = vec!["test", "--host=localhost"];
  let result = Server::from_cli_args(App::new("test"), args).unwrap();

  assert_eq!(result.len(), 1);
  assert_eq!(result.get("host").unwrap(), "localhost");
  assert_eq!(result.get("port"), None);
}

#[test]
fn sets_port() {
  let args = vec!["test", "--port", "8080"];
  let result = Server::from_cli_args(App::new("test"), args).unwrap();

  assert_eq!(result.len(), 1);
  assert_eq!(result.get("port").unwrap(), "8080");
  assert_eq!(result.get("host"), None);
}

#[test]
fn sets_both() {
  let args = vec!["test", "--port", "8080", "--host=otherhost"];
  let result = Server::from_cli_args(App::new("test"), args).unwrap();

  assert_eq!(result.len(), 2);
  assert_eq!(result.get("port").unwrap(), "8080");
  assert_eq!(result.get("host").unwrap(), "otherhost");
}