bjoernager/rust
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add array from_ref

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This commit is contained in:
Bastian Kauschke 2020-09-22 21:35:43 +02:00
parent e0bc267512
commit 179f63dafc
3 changed files with 31 additions and 1 deletions
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17
library/core/tests/array.rs
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@ -1,4 +1,4 @@
use core::array::{FixedSizeArray, IntoIter};
use core::array::{self, FixedSizeArray, IntoIter};
use core::convert::TryFrom;
#[test]
@ -19,6 +19,21 @@ fn fixed_size_array() {
assert_eq!(FixedSizeArray::as_mut_slice(&mut empty_zero_sized).len(), 0);
}
#[test]
fn array_from_ref() {
let value: String = "Hello World!".into();
let arr: &[String; 1] = array::from_ref(&value);
assert_eq!(&[value.clone()], arr);
}
#[test]
fn array_from_mut() {
let mut value: String = "Hello World".into();
let arr: &mut [String; 1] = array::from_mut(&mut value);
arr[0].push_str("!");
assert_eq!(&value, "Hello World!");
}
#[test]
fn array_try_from() {
macro_rules! test {