1'use strict'; 2const common = require('../common'); 3const net = require('net'); 4const assert = require('assert'); 5const socket = net.Stream({ highWaterMark: 0 }); 6 7// Make sure that anything besides a buffer or a string throws. 8socket.on('error', common.mustNotCall()); 9assert.throws(() => { 10 socket.write(null); 11}, { 12 code: 'ERR_STREAM_NULL_VALUES', 13 name: 'TypeError', 14 message: 'May not write null values to stream' 15}); 16 17[ 18 true, 19 false, 20 undefined, 21 1, 22 1.0, 23 +Infinity, 24 -Infinity, 25 [], 26 {}, 27].forEach((value) => { 28 // We need to check the callback since 'error' will only 29 // be emitted once per instance. 30 assert.throws(() => { 31 socket.write(value); 32 }, { 33 code: 'ERR_INVALID_ARG_TYPE', 34 name: 'TypeError', 35 message: 'The "chunk" argument must be of type string or an instance of ' + 36 `Buffer or Uint8Array.${common.invalidArgTypeHelper(value)}` 37 }); 38}); 39