1// Copyright Joyent, Inc. and other Node contributors. 2// 3// Permission is hereby granted, free of charge, to any person obtaining a 4// copy of this software and associated documentation files (the 5// "Software"), to deal in the Software without restriction, including 6// without limitation the rights to use, copy, modify, merge, publish, 7// distribute, sublicense, and/or sell copies of the Software, and to permit 8// persons to whom the Software is furnished to do so, subject to the 9// following conditions: 10// 11// The above copyright notice and this permission notice shall be included 12// in all copies or substantial portions of the Software. 13// 14// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 15// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 16// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN 17// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 18// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 19// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE 20// USE OR OTHER DEALINGS IN THE SOFTWARE. 21 22'use strict'; 23require('../common'); 24const assert = require('assert'); 25 26const path = require('path'); 27const fs = require('fs'); 28 29const tmpdir = require('../common/tmpdir'); 30 31 32const filepath = path.join(tmpdir.path, 'write.txt'); 33 34const EXPECTED = '012345678910'; 35 36const cb_expected = 'write open drain write drain close '; 37let cb_occurred = ''; 38 39let countDrains = 0; 40 41 42process.on('exit', function() { 43 removeTestFile(); 44 if (cb_occurred !== cb_expected) { 45 console.log(' Test callback events missing or out of order:'); 46 console.log(` expected: ${cb_expected}`); 47 console.log(` occurred: ${cb_occurred}`); 48 assert.strictEqual( 49 cb_occurred, cb_expected, 50 `events missing or out of order: "${cb_occurred}" !== "${cb_expected}"`); 51 } else { 52 console.log('ok'); 53 } 54}); 55 56function removeTestFile() { 57 try { 58 fs.unlinkSync(filepath); 59 } catch {} 60} 61 62 63tmpdir.refresh(); 64 65// Drain at 0, return false at 10. 66const file = fs.createWriteStream(filepath, { 67 highWaterMark: 11 68}); 69 70file.on('open', function(fd) { 71 console.error('open'); 72 cb_occurred += 'open '; 73 assert.strictEqual(typeof fd, 'number'); 74}); 75 76file.on('drain', function() { 77 console.error('drain'); 78 cb_occurred += 'drain '; 79 ++countDrains; 80 if (countDrains === 1) { 81 console.error('drain=1, write again'); 82 assert.strictEqual(fs.readFileSync(filepath, 'utf8'), EXPECTED); 83 console.error(`ondrain write ret= ${file.write(EXPECTED)}`); 84 cb_occurred += 'write '; 85 } else if (countDrains === 2) { 86 console.error('second drain, end'); 87 assert.strictEqual(fs.readFileSync(filepath, 'utf8'), EXPECTED + EXPECTED); 88 file.end(); 89 } 90}); 91 92file.on('close', function() { 93 cb_occurred += 'close '; 94 assert.strictEqual(file.bytesWritten, EXPECTED.length * 2); 95 file.write('should not work anymore', (err) => { 96 assert.ok(err.message.includes('write after end')); 97 }); 98}); 99 100for (let i = 0; i < 11; i++) { 101 const ret = file.write(String(i)); 102 console.error(`${i} ${ret}`); 103 104 // Return false when i hits 10 105 assert.strictEqual(ret, i !== 10); 106} 107cb_occurred += 'write '; 108