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test arrray try_from (interesting const generic usage) #837

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merged 2 commits into from
Aug 20, 2019
Merged

test arrray try_from (interesting const generic usage) #837

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a76bc3f
test arrray try_from (interesting const generic usage)
RalfJung Jul 13, 2019
3b14567
bump Rust
RalfJung Aug 20, 2019
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2 changes: 1 addition & 1 deletion rust-version
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Original file line number Diff line number Diff line change
@@ -1 +1 @@
ef1ecbefb8719e408150738664d443a73f757ffd
14890954ce17c44d944eda988c5a64bb4c5ec9eb
13 changes: 13 additions & 0 deletions tests/run-pass/arrays.rs
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@@ -1,3 +1,5 @@
use std::convert::TryFrom;

fn empty_array() -> [u16; 0] {
[]
}
Expand Down Expand Up @@ -33,6 +35,16 @@ fn slice_index() -> u8 {
arr[5]
}

fn try_from() {
const N: usize = 16;
type Array = [u8; N];
let array: Array = [0; N];
let slice: &[u8] = &array[..];

let result = <&Array>::try_from(slice);
assert_eq!(&array, result.unwrap());
}

fn eq() {
const N: usize = 16;
type Array = [u8; N];
Expand All @@ -57,6 +69,7 @@ fn main() {
assert_eq!(array_array(), [[5, 4], [3, 2], [1, 0]]);
assert_eq!(array_repeat(), [42; 8]);
assert_eq!(mini_array(), [42]);
try_from();
eq();
debug();
}