use jecs::World;
#[test]
fn create_and_get_resource_immutably() {
let world = initialize_world();
let fps = world.get_resource::<FPSResource>().unwrap();
assert_eq!(fps.0, 60);
}
#[test]
fn get_resource_mutably() {
let mut world = initialize_world();
{
let fps = world.get_resource_mut::<FPSResource>().unwrap();
fps.0 += 10;
}
let fps = world.get_resource::<FPSResource>().unwrap();
assert_eq!(fps.0, 70);
}
#[test]
fn delete_resource() {
let mut world = initialize_world();
world.delete_resource::<FPSResource>();
let deleted_resource = world.get_resource::<FPSResource>();
assert!(deleted_resource.is_none());
}
fn initialize_world() -> World {
let mut world = World::new();
world.add_resource(FPSResource::new(60));
world
}
#[derive(Debug)]
struct FPSResource(pub u32);
impl FPSResource {
pub fn new(fps: u32) -> Self {
Self(fps)
}
}