[go: up one dir, main page]

anyhow 1.0.6

A better Box<dyn Error>
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

mod common;
mod drop;

use self::common::*;
use self::drop::DetectDrop;
use anyhow::Error;
use std::io;
use std::sync::atomic::AtomicBool;
use std::sync::atomic::Ordering::SeqCst;
use std::sync::Arc;

#[test]
fn test_downcast() {
    assert_eq!(
        "oh no!",
        bail_literal().unwrap_err().downcast::<&str>().unwrap(),
    );
    assert_eq!(
        "oh no!",
        bail_fmt().unwrap_err().downcast::<String>().unwrap(),
    );
    assert_eq!(
        "oh no!",
        bail_error()
            .unwrap_err()
            .downcast::<io::Error>()
            .unwrap()
            .to_string(),
    );
}

#[test]
fn test_downcast_ref() {
    assert_eq!(
        "oh no!",
        *bail_literal().unwrap_err().downcast_ref::<&str>().unwrap(),
    );
    assert_eq!(
        "oh no!",
        bail_fmt().unwrap_err().downcast_ref::<String>().unwrap(),
    );
    assert_eq!(
        "oh no!",
        bail_error()
            .unwrap_err()
            .downcast_ref::<io::Error>()
            .unwrap()
            .to_string(),
    );
}

#[test]
fn test_downcast_mut() {
    assert_eq!(
        "oh no!",
        *bail_literal().unwrap_err().downcast_mut::<&str>().unwrap(),
    );
    assert_eq!(
        "oh no!",
        bail_fmt().unwrap_err().downcast_mut::<String>().unwrap(),
    );
    assert_eq!(
        "oh no!",
        bail_error()
            .unwrap_err()
            .downcast_mut::<io::Error>()
            .unwrap()
            .to_string(),
    );
}

#[test]
fn test_drop() {
    let has_dropped = Arc::new(AtomicBool::new(false));
    let error = Error::new(DetectDrop::new(&has_dropped));
    drop(error.downcast::<DetectDrop>().unwrap());
    assert!(has_dropped.load(SeqCst));
}