require('../common'); path = require('path'), Buffer = require('buffer').Buffer fs = require('fs') fn = path.join(fixturesDir, 'write.txt'); foo = 'foo' var fd = fs.openSync(fn, 'w'); fs.writeSync(fd, foo); bar = 'bár' fs.writeSync(fd, new Buffer(bar), 0, Buffer.byteLength(bar)); fs.closeSync(fd); assert.equal(fs.readFileSync(fn), 'foobár');