// tests/default/event_handler.rs

use event_handlers_types::default::{CancelToken, Cancelable, EventHandler};
use futures_util::future::ready;

#[test]
fn event_handler_should_execute_successfully_when_not_canceled() {
    // Arrange: Create an executable closure that uses the mock event.
    let executable_closure = || -> Result<(), String> { Ok(()) };
    let mut event_handler = EventHandler::new(ready(executable_closure()), CancelToken::default());
    let waker = futures_util::task::noop_waker();

    // Act
    let result = event_handler.execute(&waker);

    // Assert
    assert!(result.is_ok());
}

#[test]
fn event_handler_should_return_error_when_canceled() {
    // Arrange: Create an executable closure and a canceled CancelToken.
    let executable_closure = || -> Result<(), String> { Ok(()) };
    let mut cancel_token = CancelToken::default();
    cancel_token.cancel();
    let mut event_handler = EventHandler::new(ready(executable_closure()), cancel_token);
    let waker = futures_util::task::noop_waker();

    // Act
    let result = event_handler.execute(&waker);

    // Assert
    assert_eq!(result, Err("Operation was canceled.".to_string()));
}