[rustc.git] / vendor / rustc-rayon-core / tests / double_init_fail.rs

use rayon_core::ThreadPoolBuilder;
use std::error::Error;

#[test]
fn double_init_fail() {
    let result1 = ThreadPoolBuilder::new().build_global();
    assert_eq!(result1.unwrap(), ());
    let err = ThreadPoolBuilder::new().build_global().unwrap_err();
    assert!(err.source().is_none());
    assert_eq!(
        err.to_string(),
        "The global thread pool has already been initialized.",
    );
}
Commit	Line	Data
532ac7d7	1	use rayon_core::ThreadPoolBuilder;
2c00a5a8 XL	2	use std::error::Error;
2c00a5a8 XL	3
532ac7d7 XL	4	#[test]
532ac7d7 XL	5	fn double_init_fail() {
2c00a5a8 XL	6	let result1 = ThreadPoolBuilder::new().build_global();
	7	assert_eq!(result1.unwrap(), ());
	8	let err = ThreadPoolBuilder::new().build_global().unwrap_err();
923072b8 FG	9	assert!(err.source().is_none());
	10	assert_eq!(
	11	err.to_string(),
	12	"The global thread pool has already been initialized.",
	13	);
2c00a5a8	14	}