'use strict'; const common = require('../common'); const assert = require('assert'); const path = require('path'); const fs = require('fs'); const filepath = path.join(common.fixturesDir, 'x.txt'); const fd = fs.openSync(filepath, 'r'); const expected = 'xyz\n'; // Error must be thrown with string assert.throws(() => { fs.read(fd, expected.length, 0, 'utf-8', common.mustNotCall()); }, /^TypeError: Second argument needs to be a buffer$/); assert.throws(() => { fs.readSync(fd, expected.length, 0, 'utf-8'); }, /^TypeError: Second argument needs to be a buffer$/);