deno.land / std@0.177.1 / bytes / equals_test.ts

equals_test.ts
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// Copyright 2018-2023 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)); }});
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10 months ago