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tests/unit_node/internal/_randomFill_test.ts
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Kenta Moriuchi
chore: Happy New Year 2026 (#31748)
08 янв 2026, 18:28
Не верифицирован
08 янв 2026, 18:28
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// Copyright 2018-2026 the Deno authors. MIT license. import { Buffer } from "node:buffer"; import { randomFill, randomFillSync } from "node:crypto"; import { assertEquals, assertNotEquals, assertThrows } from "@std/assert"; const validateNonZero = (buf: Buffer) => { if (!buf.some((ch) => ch > 0)) throw new Error("Error"); }; const validateZero = (buf: Buffer) => { buf.forEach((val) => assertEquals(val, 0)); }; Deno.test("[node/crypto.randomFill]", async () => { const { promise, resolve } = Promise.withResolvers<boolean>(); const buf = Buffer.alloc(10); const before = buf.toString("hex"); randomFill(buf, 5, 5, (_err, bufTwo) => { const after = bufTwo?.toString("hex"); assertEquals(before.slice(0, 10), after?.slice(0, 10)); resolve(true); }); await promise; }); Deno.test("[node/crypto.randomFillSync]", () => { const buf = Buffer.alloc(10); const before = buf.toString("hex"); const after = randomFillSync(buf, 5, 5); assertNotEquals(before, after.toString("hex")); }); Deno.test("[node/crypto.randomFillSync] Complete fill, explicit size", () => { const buf = Buffer.alloc(10); randomFillSync(buf, undefined, 10); validateNonZero(buf); }); Deno.test("[randomFillSync] Complete fill", () => { const buf = Buffer.alloc(10); randomFillSync(buf); validateNonZero(buf); }); Deno.test("[node/crypto.randomFillSync] Fill beginning, explicit offset+size", () => { const buf = Buffer.alloc(10); randomFillSync(buf, 0, 5); validateNonZero(buf); const untouched = buf.slice(5); assertEquals(untouched.length, 5); validateZero(untouched); }); Deno.test("[node/crypto.randomFillSync] Invalid offst/size", () => { assertThrows(() => randomFillSync(Buffer.alloc(10), 1, 10)); });