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69 lines
2.3 KiB
69 lines
2.3 KiB
// Copyright Joyent, Inc. and other Node contributors.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to permit
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// persons to whom the Software is furnished to do so, subject to the
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// following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
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// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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// USE OR OTHER DEALINGS IN THE SOFTWARE.
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'use strict';
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const common = require('../common');
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const fs = require('fs');
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const assert = require('assert');
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const join = require('path').join;
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const filename = join(common.tmpDir, 'out.txt');
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common.refreshTmpDir();
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const fd = fs.openSync(filename, 'w');
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const line = 'aaaaaaaaaaaaaaaaaaaaaaaaaaaa\n';
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const N = 10240;
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let complete = 0;
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for (let i = 0; i < N; i++) {
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// Create a new buffer for each write. Before the write is actually
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// executed by the thread pool, the buffer will be collected.
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const buffer = Buffer.from(line);
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fs.write(fd, buffer, 0, buffer.length, null, function(er, written) {
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complete++;
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if (complete === N) {
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fs.closeSync(fd);
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const s = fs.createReadStream(filename);
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s.on('data', testBuffer);
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}
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});
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}
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let bytesChecked = 0;
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function testBuffer(b) {
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for (let i = 0; i < b.length; i++) {
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bytesChecked++;
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if (b[i] !== 'a'.charCodeAt(0) && b[i] !== '\n'.charCodeAt(0)) {
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throw new Error('invalid char ' + i + ',' + b[i]);
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}
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}
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}
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process.on('exit', function() {
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// Probably some of the writes are going to overlap, so we can't assume
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// that we get (N * line.length). Let's just make sure we've checked a
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// few...
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assert.ok(bytesChecked > 1000);
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});
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