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std/io/util_test.ts

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// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.const { remove, test } = Deno;import { assert, assertEquals } from "../testing/asserts.ts";import * as path from "../path/mod.ts";import { copyBytes, tempFile } from "./util.ts";
test("[io/tuil] copyBytes", function (): void { const dst = new Uint8Array(4);
dst.fill(0); let src = Uint8Array.of(1, 2); let len = copyBytes(dst, src, 0); assert(len === 2); assertEquals(dst, Uint8Array.of(1, 2, 0, 0));
dst.fill(0); src = Uint8Array.of(1, 2); len = copyBytes(dst, src, 1); assert(len === 2); assertEquals(dst, Uint8Array.of(0, 1, 2, 0));
dst.fill(0); src = Uint8Array.of(1, 2, 3, 4, 5); len = copyBytes(dst, src); assert(len === 4); assertEquals(dst, Uint8Array.of(1, 2, 3, 4));
dst.fill(0); src = Uint8Array.of(1, 2); len = copyBytes(dst, src, 100); assert(len === 0); assertEquals(dst, Uint8Array.of(0, 0, 0, 0));
dst.fill(0); src = Uint8Array.of(3, 4); len = copyBytes(dst, src, -2); assert(len === 2); assertEquals(dst, Uint8Array.of(3, 4, 0, 0));});
test({ name: "[io/util] tempfile", fn: async function (): Promise<void> { const f = await tempFile(".", { prefix: "prefix-", postfix: "-postfix", }); const base = path.basename(f.filepath); assert(!!base.match(/^prefix-.+?-postfix$/)); f.file.close(); await remove(f.filepath); },});