1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101

#![allow(clippy::type_complexity)]
#![allow(dead_code)]

pub mod event_emitter;
pub mod listener;
pub mod observer;
pub mod subscription;

#[cfg(test)]
mod tests {
    use crate::event_emitter::EventEmitter;
    use std::cell::RefCell;
    use std::rc::Rc;

    #[test]
    fn test_ee() {
        #[derive(Debug, PartialEq)]
        struct SomeEvent {
            pub ev: u32,
            pub txt: &'static str,
        }

        let mut ee = EventEmitter::<Rc<SomeEvent>>::new();

        let fired_ev: Rc<RefCell<Option<Rc<SomeEvent>>>> = Rc::new(RefCell::new(Option::None));

        let subs1 = {
            let fired_ev_clone = fired_ev.clone();

            ee.on(Box::new(move |ev| {
                *fired_ev_clone.borrow_mut() = Option::Some(Rc::clone(ev));
                Ok(())
            }))
        };

        let subs2 = {
            let fired_ev_clone = fired_ev.clone();

            ee.on(Box::new(move |ev| {
                *fired_ev_clone.borrow_mut() = Option::Some(Rc::clone(ev));
                Ok(())
            }))
        };

        assert!(fired_ev.borrow().is_none());

        ee.emit(&Rc::new(SomeEvent { ev: 123, txt: "hello" })).unwrap();

        assert!(fired_ev.borrow().is_some());

        assert_eq!(ee.is_empty(), false);

        drop(subs1);

        assert_eq!(ee.is_empty(), false);

        if let Some(ev) = fired_ev.borrow().clone() {
            assert_eq!(ev.ev, 123);
        }

        ee.emit(&Rc::new(SomeEvent { ev: 333, txt: "world" })).unwrap();

        if let Some(ev) = fired_ev.borrow().clone() {
            assert_eq!(ev.ev, 333);
        }

        let subs3 = {
            let fired_ev_clone = fired_ev.clone();
            ee.once(Box::new(move |ev| {
                *fired_ev_clone.borrow_mut() = Option::Some(ev.clone());
                Ok(())
            }))
        };

        assert_eq!(ee.is_empty(), false);

        ee.emit(&Rc::new(SomeEvent { ev: 444, txt: "world" })).unwrap();

        if let Some(ev) = fired_ev.borrow().clone() {
            assert_eq!(ev.ev, 444);
        }

        drop(subs2);

        ee.emit(&Rc::new(SomeEvent { ev: 555, txt: "world" })).unwrap();

        if let Some(ev) = fired_ev.borrow().clone() {
            assert_eq!(ev.ev, 444);
        }

        assert_eq!(ee.is_empty(), true);

        ee.reset();

        assert_eq!(ee.is_empty(), true);

        drop(ee);

        drop(subs3);
    }
}