vendor/anyhow/tests/test_repr.rs


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

#![allow(clippy::extra_unused_type_parameters)]

mod drop;

use self::drop::{DetectDrop, Flag};
use anyhow::Error;
use std::marker::Unpin;
use std::mem;

#[test]
fn test_error_size() {
    assert_eq!(mem::size_of::<Error>(), mem::size_of::<usize>());
}

#[test]
fn test_null_pointer_optimization() {
    assert_eq!(mem::size_of::<Result<(), Error>>(), mem::size_of::<usize>());
}

#[test]
fn test_autotraits() {
    fn assert<E: Unpin + Send + Sync + 'static>() {}
    assert::<Error>();
}

#[test]
fn test_drop() {
    let has_dropped = Flag::new();
    drop(Error::new(DetectDrop::new(&has_dropped)));
    assert!(has_dropped.get());
}