std/bytes/copy_test.ts
Lino Le Van c46143f0ac
chore: update copyright year (#4046)
* chore: update copyright year

* fix

---------

Co-authored-by: Asher Gomez <ashersaupingomez@gmail.com>
2024-01-02 08:11:32 +11:00

38 lines
960 B
TypeScript

// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
import { assert, assertEquals } from "../assert/mod.ts";
import { copy } from "./copy.ts";
Deno.test("copy()", function () {
const dst = new Uint8Array(4);
dst.fill(0);
let src = Uint8Array.of(1, 2);
let len = copy(src, dst, 0);
assert(len === 2);
assertEquals(dst, Uint8Array.of(1, 2, 0, 0));
dst.fill(0);
src = Uint8Array.of(1, 2);
len = copy(src, dst, 1);
assert(len === 2);
assertEquals(dst, Uint8Array.of(0, 1, 2, 0));
dst.fill(0);
src = Uint8Array.of(1, 2, 3, 4, 5);
len = copy(src, dst);
assert(len === 4);
assertEquals(dst, Uint8Array.of(1, 2, 3, 4));
dst.fill(0);
src = Uint8Array.of(1, 2);
len = copy(src, dst, 100);
assert(len === 0);
assertEquals(dst, Uint8Array.of(0, 0, 0, 0));
dst.fill(0);
src = Uint8Array.of(3, 4);
len = copy(src, dst, -2);
assert(len === 2);
assertEquals(dst, Uint8Array.of(3, 4, 0, 0));
});