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Directory :  /proc/self/root/home/real/node-v13.0.1/test/parallel/

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Current File : //proc/self/root/home/real/node-v13.0.1/test/parallel/test-fs-writev.js
'use strict';

const common = require('../common');
const assert = require('assert');
const path = require('path');
const fs = require('fs');
const tmpdir = require('../common/tmpdir');

tmpdir.refresh();

const expected = 'ümlaut. Лорем 運務ホソモ指及 आपको करने विकास 紙読決多密所 أضف';

const getFileName = (i) => path.join(tmpdir.path, `writev_${i}.txt`);

/**
 * Testing with a array of buffers input
 */

// fs.writev with array of buffers with all parameters
{
  const filename = getFileName(1);
  const fd = fs.openSync(filename, 'w');

  const buffer = Buffer.from(expected);
  const bufferArr = [buffer, buffer];

  const done = common.mustCall((err, written, buffers) => {
    assert.ifError(err);

    assert.deepStrictEqual(bufferArr, buffers);
    const expectedLength = bufferArr.length * buffer.byteLength;
    assert.deepStrictEqual(written, expectedLength);
    fs.closeSync(fd);

    assert(Buffer.concat(bufferArr).equals(fs.readFileSync(filename)));
  });

  fs.writev(fd, bufferArr, null, done);
}

// fs.writev with array of buffers without position
{
  const filename = getFileName(2);
  const fd = fs.openSync(filename, 'w');

  const buffer = Buffer.from(expected);
  const bufferArr = [buffer, buffer];

  const done = common.mustCall((err, written, buffers) => {
    assert.ifError(err);

    assert.deepStrictEqual(bufferArr, buffers);

    const expectedLength = bufferArr.length * buffer.byteLength;
    assert.deepStrictEqual(written, expectedLength);
    fs.closeSync(fd);

    assert(Buffer.concat(bufferArr).equals(fs.readFileSync(filename)));
  });

  fs.writev(fd, bufferArr, done);
}

/**
 * Testing with wrong input types
 */
{
  const filename = getFileName(3);
  const fd = fs.openSync(filename, 'w');

  [false, 'test', {}, [{}], ['sdf'], null, undefined].forEach((i) => {
    common.expectsError(
      () => fs.writev(fd, i, null, common.mustNotCall()), {
        code: 'ERR_INVALID_ARG_TYPE',
        type: TypeError
      }
    );
  });

  fs.closeSync(fd);
}

// fs.writev with wrong fd types
[false, 'test', {}, [{}], null, undefined].forEach((i) => {
  common.expectsError(
    () => fs.writev(i, common.mustNotCall()),
    {
      code: 'ERR_INVALID_ARG_TYPE',
      type: TypeError
    }
  );
});

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