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'use strict';
const common = require('../common');
const assert = require('assert');
const fs = require('fs');
const path = require('path');
const tempFile = path.join(common.tmpDir, 'fs-non-number-arguments-throw');
common.refreshTmpDir();
fs.writeFileSync(tempFile, 'abc\ndef');
// a sanity check when using numbers instead of strings
const sanity = 'def';
const saneEmitter = fs.createReadStream(tempFile, { start: 4, end: 6 });
assert.throws(function() {
fs.createReadStream(tempFile, { start: '4', end: 6 });
}, /^TypeError: "start" option must be a Number$/,
"start as string didn't throw an error for createReadStream");
assert.throws(function() {
fs.createReadStream(tempFile, { start: 4, end: '6' });
}, /^TypeError: "end" option must be a Number$/,
"end as string didn't throw an error for createReadStream");
assert.throws(function() {
fs.createWriteStream(tempFile, { start: '4' });
}, /^TypeError: "start" option must be a Number$/,
"start as string didn't throw an error for createWriteStream");
saneEmitter.on('data', common.mustCall(function(data) {
assert.strictEqual(sanity, data.toString('utf8'), 'read ' +
data.toString('utf8') + ' instead of ' + sanity);
}));