fs: add length validation to fs.truncate() · nodejs/node@469baa0

} = require('internal/constants');

const {

isUint32,

validateInteger,

validateInt32,

validateUint32

} = require('internal/validators');

len = 0;

}

validateInteger(len, 'len');

callback = maybeCallback(callback);

fs.open(path, 'r+', function(er, fd) {

if (er) return callback(er);

process.on('exit', () => fs.closeSync(fd));

['', false, null, {}, []].forEach((input) => {

assert.throws(

() => fs.truncate(file5, input, common.mustNotCall()),

{

code: 'ERR_INVALID_ARG_TYPE',

name: 'TypeError [ERR_INVALID_ARG_TYPE]',

message: 'The "len" argument must be of type number. ' +

`Received type ${typeof input}`

}

);

assert.throws(

() => fs.ftruncate(fd, input),

{

});

[-1.5, 1.5].forEach((input) => {

assert.throws(

() => fs.truncate(file5, input),

{

code: 'ERR_OUT_OF_RANGE',

name: 'RangeError [ERR_OUT_OF_RANGE]',

message: 'The value of "len" is out of range. It must be ' +

`an integer. Received ${input}`

}

);

assert.throws(

() => fs.ftruncate(fd, input),

{