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// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.import { write, writeSync } from "./_fs_write.mjs";import { assertEquals } from "../../testing/asserts.ts";import { Buffer } from "../buffer.ts";
const decoder = new TextDecoder("utf-8");
Deno.test({  name: "Data is written to the file with the correct length",  async fn() {    const tempFile: string = await Deno.makeTempFile();    const file: Deno.FsFile = await Deno.open(tempFile, {      create: true,      write: true,      read: true,    });    const buffer = Buffer.from("hello world");    const bytesWrite = await new Promise((resolve, reject) => {      write(file.rid, buffer, 0, 5, (err: unknown, nwritten: number) => {        if (err) return reject(err);        resolve(nwritten);      });    });    Deno.close(file.rid);
    const data = await Deno.readFile(tempFile);    await Deno.remove(tempFile);
    assertEquals(bytesWrite, 5);    assertEquals(decoder.decode(data), "hello");  },});
Deno.test({  name: "Data is written synchronously to the file with the correct length",  fn() {    const tempFile: string = Deno.makeTempFileSync();    const file: Deno.FsFile = Deno.openSync(tempFile, {      create: true,      write: true,      read: true,    });    const buffer = Buffer.from("hello world");    const bytesWrite = writeSync(file.rid, buffer, 0, 5);    Deno.close(file.rid);
    const data = Deno.readFileSync(tempFile);    Deno.removeSync(tempFile);
    assertEquals(bytesWrite, 5);    assertEquals(decoder.decode(data), "hello");  },});