mirror of
https://github.com/denoland/std.git
synced 2024-11-22 04:59:05 +00:00
35 lines
1.4 KiB
TypeScript
35 lines
1.4 KiB
TypeScript
// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
|
|
import { equals } from "./equals.ts";
|
|
import { assert } from "../testing/asserts.ts";
|
|
|
|
Deno.test("[bytes] equals", () => {
|
|
const v = equals(new Uint8Array([0, 1, 2, 3]), new Uint8Array([0, 1, 2, 3]));
|
|
const v2 = equals(new Uint8Array([0, 1, 2, 2]), new Uint8Array([0, 1, 2, 3]));
|
|
const v3 = equals(new Uint8Array([0, 1, 2, 3]), new Uint8Array([0, 1, 2]));
|
|
assert(v);
|
|
assert(!v2);
|
|
assert(!v3);
|
|
});
|
|
|
|
Deno.test("[bytes] equals randomized testing", () => {
|
|
// run tests before and after cutoff
|
|
for (let len = 995; len <= 1005; len++) {
|
|
const arr1 = crypto.getRandomValues(new Uint8Array(len));
|
|
const arr2 = crypto.getRandomValues(new Uint8Array(len));
|
|
const arr3 = arr1.slice(0);
|
|
// the chance of arr1 equaling arr2 is basically 0
|
|
// but introduce an inequality at the end just in case
|
|
arr2[arr2.length - 1] = arr1[arr1.length - 1] ^ 1;
|
|
// arr3 is arr1 but with an inequality in the very last element
|
|
// this is to test the equality check when length isn't a multiple of 4
|
|
arr3[arr3.length - 1] ^= 1;
|
|
// arrays with same underlying ArrayBuffer should be equal
|
|
assert(equals(arr1, arr1));
|
|
// equal arrays with different underlying ArrayBuffers should be equal
|
|
assert(equals(arr1, arr1.slice(0)));
|
|
// inequal arrays should be inequal
|
|
assert(!equals(arr1, arr2));
|
|
assert(!equals(arr1, arr3));
|
|
}
|
|
});
|