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6039a7c1b5
Add support to fs.createWriteStream and fs.createWriteStream for an autoClose option that behaves similarly to the autoClose option supported by fs.createReadStream and fs.ReadStream. When an instance of fs.createWriteStream created with autoClose === false finishes, it is not destroyed. Its underlying fd is not closed and it is the responsibility of the user to close it. PR-URL: https://github.com/nodejs/node/pull/3679 Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
53 lines
1.5 KiB
JavaScript
53 lines
1.5 KiB
JavaScript
'use strict';
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const common = require('../common');
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const assert = require('assert');
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const path = require('path');
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const fs = require('fs');
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const file = path.join(common.tmpDir, 'write-autoclose-opt1.txt');
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common.refreshTmpDir();
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let stream = fs.createWriteStream(file, {flags: 'w+', autoClose: false});
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stream.write('Test1');
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stream.end();
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stream.on('finish', common.mustCall(function() {
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process.nextTick(common.mustCall(function() {
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assert.strictEqual(stream.closed, undefined);
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assert(stream.fd !== null);
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next();
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}));
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}));
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function next() {
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// This will tell us if the fd is usable again or not
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stream = fs.createWriteStream(null, {fd: stream.fd, start: 0});
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stream.write('Test2');
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stream.end();
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stream.on('finish', common.mustCall(function() {
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assert.strictEqual(stream.closed, true);
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assert.strictEqual(stream.fd, null);
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process.nextTick(common.mustCall(next2));
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}));
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}
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function next2() {
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// This will test if after reusing the fd data is written properly
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fs.readFile(file, function(err, data) {
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assert(!err);
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assert.strictEqual(data.toString(), 'Test2');
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process.nextTick(common.mustCall(next3));
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});
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}
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function next3() {
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// This is to test success scenario where autoClose is true
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const stream = fs.createWriteStream(file, {autoClose: true});
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stream.write('Test3');
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stream.end();
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stream.on('finish', common.mustCall(function() {
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process.nextTick(common.mustCall(function() {
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assert.strictEqual(stream.closed, true);
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assert.strictEqual(stream.fd, null);
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}));
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}));
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}
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