mirror of
https://github.com/denoland/deno.git
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61 lines
1.7 KiB
TypeScript
61 lines
1.7 KiB
TypeScript
// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
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import { Buffer } from "node:buffer";
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import { randomFill, randomFillSync } from "node:crypto";
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import { assertEquals, assertNotEquals, assertThrows } from "@std/assert";
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const validateNonZero = (buf: Buffer) => {
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if (!buf.some((ch) => ch > 0)) throw new Error("Error");
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};
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const validateZero = (buf: Buffer) => {
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buf.forEach((val) => assertEquals(val, 0));
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};
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Deno.test("[node/crypto.randomFill]", async () => {
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const { promise, resolve } = Promise.withResolvers<boolean>();
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const buf = Buffer.alloc(10);
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const before = buf.toString("hex");
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randomFill(buf, 5, 5, (_err, bufTwo) => {
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const after = bufTwo?.toString("hex");
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assertEquals(before.slice(0, 10), after?.slice(0, 10));
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resolve(true);
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});
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await promise;
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});
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Deno.test("[node/crypto.randomFillSync]", () => {
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const buf = Buffer.alloc(10);
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const before = buf.toString("hex");
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const after = randomFillSync(buf, 5, 5);
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assertNotEquals(before, after.toString("hex"));
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});
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Deno.test("[node/crypto.randomFillSync] Complete fill, explicit size", () => {
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const buf = Buffer.alloc(10);
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randomFillSync(buf, undefined, 10);
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validateNonZero(buf);
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});
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Deno.test("[randomFillSync] Complete fill", () => {
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const buf = Buffer.alloc(10);
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randomFillSync(buf);
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validateNonZero(buf);
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});
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Deno.test("[node/crypto.randomFillSync] Fill beginning, explicit offset+size", () => {
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const buf = Buffer.alloc(10);
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randomFillSync(buf, 0, 5);
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validateNonZero(buf);
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const untouched = buf.slice(5);
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assertEquals(untouched.length, 5);
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validateZero(untouched);
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});
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Deno.test("[node/crypto.randomFillSync] Invalid offst/size", () => {
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assertThrows(() => randomFillSync(Buffer.alloc(10), 1, 10));
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});
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