channel 0.2.1

Rust advanced queue library
Documentation 
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use crate::utils::time_util::NaiveDateTimeExt;
use crate::{self as channel};
use chrono::{Duration, NaiveDateTime};
use std::thread::sleep;

#[test]
fn test_it_works() {
    assert!(true);
}

#[test]
fn test_new_unbounded() {
    let (tx, rx) = channel::new(None, false);
    tx.send_items(vec![1, 2, 3, 4]);
    tx.send(5);
    assert_eq!(rx.len(), 5);
    let rx2 = rx.clone();
    assert_eq!(rx.recv().unwrap(), 1);
    assert_eq!(rx2.recv_items(3), vec![2, 3, 4]);
    assert_eq!(rx.recv().unwrap(), 5);
}

#[test]
fn test_new_bounded() {
    let (tx, rx) = channel::new(Some(4), false);
    tx.send_items(vec![1, 2, 3, 4]);
    tx.send(5);
    let rx2 = rx.clone();
    assert_eq!(rx.recv_items(2), vec![2, 3]);
    assert_eq!(rx2.recv_items(2), vec![4, 5]);
    assert!(rx.is_empty());
}

#[test]
fn test_new_unbounded_dispatch() {
    let (tx, rx) = channel::new(None, true);
    tx.send_items(vec![1, 2, 3, 4]);
    tx.send(5);
    let rx2 = rx.clone();
    assert_eq!(rx.recv_items(3), vec![1, 2, 3]);
    assert_eq!(rx2.recv_items(3), vec![1, 2, 3]);
    assert_eq!(rx.recv_items_weak(3), vec![4, 5]);
    assert_eq!(rx2.recv_items_weak(3), vec![4, 5]);
}

#[test]
fn test_new_bounded_dispatch() {
    let (tx, rx) = channel::new(Some(4), true);
    tx.send_items(vec![1, 2, 3, 4]);
    tx.send(5);
    let rx2 = rx.clone();
    assert_eq!(rx.recv_items(3), vec![2, 3, 4]);
    assert_eq!(rx2.recv_items(3), vec![2, 3, 4]);
    assert_eq!(rx.recv_items_weak(3), vec![5]);
    assert_eq!(rx2.recv_items_weak(3), vec![5]);
}

#[derive(Clone, Debug)]
struct MyTSStruct {
    time: NaiveDateTime,
    data: i32,
}

impl MyTSStruct {
    pub fn new(time: NaiveDateTime, data: i32) -> Self {
        Self { time, data }
    }
}

impl channel::GetDataTimeExt for MyTSStruct {
    fn get_data_time(&self) -> NaiveDateTime {
        self.time.clone()
    }
}

#[test]
fn test_new_time_series_unbounded() {
    let (tx, rx) = channel::new_time_series(None, false, NaiveDateTime::now(), 1.0);
    tx.send_items(vec![
        MyTSStruct::new(
            NaiveDateTime::now() - chrono::Duration::milliseconds(10),
            111,
        ),
        MyTSStruct::new(
            NaiveDateTime::now() + chrono::Duration::milliseconds(10),
            222,
        ),
    ]);
    assert_eq!(rx.len(), 2);
    let rx2 = rx.clone();
    assert_eq!(rx.recv().unwrap().data, 111);
    assert!(rx2.recv().is_none());
    sleep(std::time::Duration::from_millis(20));
    assert_eq!(rx2.recv().unwrap().data, 222);
}

#[test]
fn test_new_unbounded_weak() {
    let (tx, rx) = channel::new(None, true);
    let ox = rx.get_observer();
    tx.send_items(vec![1, 2, 3, 4]);
    tx.send(5);
    assert_eq!(rx.recv_items(3), vec![1, 2, 3]);
    assert_eq!(rx.recv_items_weak(3), vec![4, 5]);
    let tx2 = ox.get_receiver();
    assert_eq!(tx2.len(), 0);
}

#[test]
fn test_new_time_series_unbounded_weak() {
    let (tx, rx) = channel::new_time_series(None, true, NaiveDateTime::now(), 1.0);
    let mut ox = rx.get_observer();
    tx.send_items(vec![
        MyTSStruct::new(NaiveDateTime::now() - Duration::milliseconds(10), 111),
        MyTSStruct::new(NaiveDateTime::now() + Duration::milliseconds(10), 222),
    ]);
    assert_eq!(rx.recv().unwrap().data, 111);
    let tx2 = ox.get_receiver();
    assert_eq!(tx2.len(), 1);
    #[cfg(feature = "metrics")]
    {
        let result = ox.get_metrics_result(true);
        let send_count: usize = result.sender_counts.iter().map(|(_, v)| *v).sum();
        let recv_count: usize = result.receiver_counts.iter().map(|(_, v)| *v).sum();
        assert_eq!(send_count, 2);
        assert_eq!(recv_count, 1);
    }
}

#[test]
fn test_new_unbounded_bidirectional() {
    let (mut reqx, mut respx) = channel::new_unbounded_bidirectional();
    let mut reqy = reqx.clone();
    reqx.send_request(12);
    reqy.send_request(15);
    assert!(reqx.try_get_response().is_none());
    {
        let xdata = respx.try_take_request().unwrap();
        respx.reply_response(xdata + 1);
        let xdata = respx.try_take_request().unwrap();
        respx.reply_response(xdata + 1);
    }
    assert_eq!(reqx.try_get_response().unwrap(), 13);
    assert_eq!(reqy.try_get_response().unwrap(), 16);
}

// #[tokio::test]
// async fn test_new_unbounded_bidirectional_async() {
//     let (mut reqx, mut respx) = channel::new_unbounded_bidirectional_async();
//     _ = tokio::join! {
//         tokio::spawn(async move {
//             let ret: usize = reqx.request(12).await;
//             assert_eq!(ret, 13);
//         }),
//         tokio::spawn(async move {
//             loop {
//                 match respx.take_request() {
//                     Some((data, sender)) => {
//                         _ = sender.send(data);
//                         break;
//                     },
//                     None => (),
//                 }
//             }
//         })
//     };
// }