rs2-stream 0.3.3

A high-performance, production-ready async streaming library for Rust.
Documentation 
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

use futures_util::stream::StreamExt;
use rs2_stream::rs2::*;
use tokio::runtime::Runtime;

#[test]
fn test_emit() {
    let rt = Runtime::new().unwrap();
    rt.block_on(async {
        let stream = emit(42);
        let result = stream.collect::<Vec<_>>().await;
        assert_eq!(result, vec![42]);
    });
}

#[test]
fn test_empty() {
    let rt = Runtime::new().unwrap();
    rt.block_on(async {
        let stream = empty::<i32>();
        let result = stream.collect::<Vec<_>>().await;
        assert_eq!(result, Vec::<i32>::new());
    });
}

#[test]
fn test_from_iter() {
    let rt = Runtime::new().unwrap();
    rt.block_on(async {
        let stream = from_iter(vec![1, 2, 3, 4, 5]);
        let result = stream.collect::<Vec<_>>().await;
        assert_eq!(result, vec![1, 2, 3, 4, 5]);
    });
}

#[test]
fn test_eval() {
    let rt = Runtime::new().unwrap();
    rt.block_on(async {
        let stream = eval(async { 42 });
        let result = stream.collect::<Vec<_>>().await;
        assert_eq!(result, vec![42]);
    });
}

#[test]
fn test_repeat() {
    let rt = Runtime::new().unwrap();
    rt.block_on(async {
        let stream = repeat(42);
        let result = stream.take(5).collect::<Vec<_>>().await;
        assert_eq!(result, vec![42, 42, 42, 42, 42]);
    });
}

#[test]
fn test_emit_after() {
    let rt = Runtime::new().unwrap();
    rt.block_on(async {
        let start = std::time::Instant::now();
        let stream = emit_after(42, std::time::Duration::from_millis(100));
        let result = stream.collect::<Vec<_>>().await;
        let elapsed = start.elapsed();

        assert_eq!(result, vec![42]);
        assert!(
            elapsed.as_millis() >= 100,
            "Should have waited at least 100ms"
        );
    });
}

#[test]
fn test_take() {
    let rt = Runtime::new().unwrap();
    rt.block_on(async {
        let stream = from_iter(vec![1, 2, 3, 4, 5]);
        let result = take(stream, 3).collect::<Vec<_>>().await;
        assert_eq!(result, vec![1, 2, 3]);
    });
}

#[test]
fn test_drop() {
    let rt = Runtime::new().unwrap();
    rt.block_on(async {
        let stream = from_iter(vec![1, 2, 3, 4, 5]);
        let result = drop(stream, 2).collect::<Vec<_>>().await;
        assert_eq!(result, vec![3, 4, 5]);
    });
}