mod.rs

use micro_games_macros::event_system;


#[test]
fn event_system_correctly_generates_and_dispatches_events() {
	use bevy::prelude::*;

	let mut app = App::new();

	#[event_system]
	enum MyEvents {
		Wait { source: Entity },
		Log { source: Entity, mesasge: String },
	}

	/// A hatch to allow us to assert that the system has actually run, so we don't miss an
	/// assertion
	#[derive(Resource)]
	struct HasRun(bool);
	app.insert_resource(HasRun(false));

	app.add_plugins(MyEventsPlugin);
	app.add_systems(
		Update,
		|mut has_run: ResMut<HasRun>, events: EventReader<WaitEvent>| {
			has_run.0 = true;
			let event_length = events.len();
			assert_eq!(event_length, 1);
		},
	);

	dispatch_my_events(
		&mut app.world,
		MyEvents::Wait(WaitEvent {
			source: Entity::from_raw(0),
		}),
	);

	app.update();

	assert!(app.world.resource::<HasRun>().0);
}