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'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';
let cnt = 0;
const getFileName = () => path.join(tmpdir.path, `readv_${++cnt}.txt`);
const exptectedBuff = Buffer.from(expected);
const allocateEmptyBuffers = (combinedLength) => {
const bufferArr = [];
// Allocate two buffers, each half the size of exptectedBuff
bufferArr[0] = Buffer.alloc(Math.floor(combinedLength / 2));
bufferArr[1] = Buffer.alloc(combinedLength - bufferArr[0].length);
return bufferArr;
};
const getCallback = (fd, bufferArr) => {
return common.mustSucceed((bytesRead, buffers) => {
assert.deepStrictEqual(bufferArr, buffers);
const expectedLength = exptectedBuff.length;
assert.deepStrictEqual(bytesRead, expectedLength);
fs.closeSync(fd);
assert(Buffer.concat(bufferArr).equals(exptectedBuff));
});
};
// fs.readv with array of buffers with all parameters
{
const filename = getFileName();
const fd = fs.openSync(filename, 'w+');
fs.writeSync(fd, exptectedBuff);
const bufferArr = allocateEmptyBuffers(exptectedBuff.length);
const callback = getCallback(fd, bufferArr);
fs.readv(fd, bufferArr, 0, callback);
}
// fs.readv with array of buffers without position
{
const filename = getFileName();
fs.writeFileSync(filename, exptectedBuff);
const fd = fs.openSync(filename, 'r');
const bufferArr = allocateEmptyBuffers(exptectedBuff.length);
const callback = getCallback(fd, bufferArr);
fs.readv(fd, bufferArr, callback);
}
/**
* Testing with incorrect arguments
*/
const wrongInputs = [false, 'test', {}, [{}], ['sdf'], null, undefined];
{
const filename = getFileName(2);
fs.writeFileSync(filename, exptectedBuff);
const fd = fs.openSync(filename, 'r');
wrongInputs.forEach((wrongInput) => {
assert.throws(
() => fs.readv(fd, wrongInput, null, common.mustNotCall()), {
code: 'ERR_INVALID_ARG_TYPE',
name: 'TypeError'
}
);
});
fs.closeSync(fd);
}
{
// fs.readv with wrong fd argument
wrongInputs.forEach((wrongInput) => {
assert.throws(
() => fs.readv(wrongInput, common.mustNotCall()),
{
code: 'ERR_INVALID_ARG_TYPE',
name: 'TypeError'
}
);
});
}
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