51 строка
1.2 KiB
JavaScript
51 строка
1.2 KiB
JavaScript
var common = require('../common');
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var fs = require('fs');
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var assert = require('assert');
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var join = require('path').join;
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var filename = join(common.tmpDir, 'out.txt');
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try {
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fs.unlinkSync(filename);
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} catch (e) {
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// might not exist, that's okay.
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}
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var fd = fs.openSync(filename, 'w');
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var line = 'aaaaaaaaaaaaaaaaaaaaaaaaaaaa\n';
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var N = 10240, complete = 0;
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for (var 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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var buffer = new Buffer(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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var 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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var bytesChecked = 0;
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function testBuffer(b) {
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for (var 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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